diff --git a/apps/analytics/urls.py b/apps/analytics/urls.py
index 0643ea5d20..16b9efa005 100644
--- a/apps/analytics/urls.py
+++ b/apps/analytics/urls.py
@@ -19,12 +19,14 @@
         name="get_submission_count",
     ),
     re_path(
-        r"^challenge/(?P<challenge_pk>[0-9]+)/challenge_phase/(?P<challenge_phase_pk>[0-9]+)/analytics$",
+        r"^challenge/(?P<challenge_pk>[0-9]+)/challenge_phase/"
+        r"(?P<challenge_phase_pk>[0-9]+)/analytics$",
         views.get_challenge_phase_submission_analysis,
         name="get_challenge_phase_submission_analysis",
     ),
     re_path(
-        r"^challenge/(?P<challenge_pk>[0-9]+)/challenge_phase/(?P<challenge_phase_pk>[0-9]+)/count$",
+        r"^challenge/(?P<challenge_pk>[0-9]+)/challenge_phase/"
+        r"(?P<version>(v1|v2))/(?P<challenge_phase_pk_or_slug>[-a-zA-Z0-9_]+)/count$",
         views.get_challenge_phase_submission_count_by_team,
         name="get_challenge_phase_submission_count_by_team",
     ),
diff --git a/apps/analytics/views.py b/apps/analytics/views.py
index 15dd59d8c0..05772f6048 100644
--- a/apps/analytics/views.py
+++ b/apps/analytics/views.py
@@ -2,6 +2,7 @@
 from datetime import timedelta
 
 from accounts.permissions import HasVerifiedEmail
+from challenges.models import ChallengePhase
 from challenges.permissions import IsChallengeCreator
 from challenges.utils import get_challenge_model, get_challenge_phase_model
 from django.http import HttpResponse
@@ -140,14 +141,23 @@ def get_submission_count(request, challenge_pk, duration):
 )
 @authentication_classes((JWTAuthentication, ExpiringTokenAuthentication))
 def get_challenge_phase_submission_count_by_team(
-    request, challenge_pk, challenge_phase_pk
+    request, challenge_pk, challenge_phase_pk_or_slug, version
 ):
     """
     Returns number of submissions done by a participant team in a challenge phase
     """
     challenge = get_challenge_model(challenge_pk)
 
-    challenge_phase = get_challenge_phase_model(challenge_phase_pk)
+    if version == "v2":
+        try:
+            challenge_phase = ChallengePhase.objects.get(
+                slug=challenge_phase_pk_or_slug, challenge=challenge
+            )
+        except ChallengePhase.DoesNotExist:
+            response_data = {"error": "Challenge Phase does not exist"}
+            return Response(response_data, status=status.HTTP_400_BAD_REQUEST)
+    else:
+        challenge_phase = get_challenge_phase_model(challenge_phase_pk_or_slug)
 
     participant_team = get_participant_team_id_of_user_for_a_challenge(
         request.user, challenge.pk
diff --git a/apps/challenges/serializers.py b/apps/challenges/serializers.py
index 4e933be0a6..41836505b3 100644
--- a/apps/challenges/serializers.py
+++ b/apps/challenges/serializers.py
@@ -21,7 +21,6 @@
 
 
 class ChallengeSerializer(serializers.ModelSerializer):
-
     is_active = serializers.ReadOnlyField()
     domain_name = serializers.SerializerMethodField()
 
@@ -100,7 +99,6 @@ class Meta:
 
 
 class ChallengePhaseSerializer(serializers.ModelSerializer):
-
     is_active = serializers.ReadOnlyField()
 
     def __init__(self, *args, **kwargs):
@@ -177,6 +175,8 @@ class ChallengePhaseSplitSerializer(serializers.ModelSerializer):
     dataset_split_name = serializers.SerializerMethodField()
     challenge_phase_name = serializers.SerializerMethodField()
     leaderboard_schema = serializers.SerializerMethodField()
+    challenge_phase_slug = serializers.SerializerMethodField()
+    dataset_split_codename = serializers.SerializerMethodField()
 
     class Meta:
         model = ChallengePhaseSplit
@@ -186,6 +186,8 @@ class Meta:
             "challenge_phase",
             "challenge_phase_name",
             "dataset_split_name",
+            "challenge_phase_slug",
+            "dataset_split_codename",
             "visibility",
             "show_leaderboard_by_latest_submission",
             "show_execution_time",
@@ -202,6 +204,12 @@ def get_dataset_split_name(self, obj):
     def get_challenge_phase_name(self, obj):
         return obj.challenge_phase.name
 
+    def get_challenge_phase_slug(self, obj):
+        return obj.challenge_phase.slug
+
+    def get_dataset_split_codename(self, obj):
+        return obj.dataset_split.codename
+
 
 class ChallengeConfigSerializer(serializers.ModelSerializer):
     """
@@ -354,7 +362,6 @@ class Meta:
 
 
 class ChallengePhaseCreateSerializer(serializers.ModelSerializer):
-
     is_active = serializers.ReadOnlyField()
 
     def __init__(self, *args, **kwargs):
@@ -412,7 +419,6 @@ class Meta:
 
 
 class StarChallengeSerializer(serializers.ModelSerializer):
-
     count = serializers.SerializerMethodField()
 
     def __init__(self, *args, **kwargs):
@@ -502,7 +508,6 @@ class Meta:
 
 
 class PWCChallengeLeaderboardSerializer(serializers.ModelSerializer):
-
     challenge_id = serializers.SerializerMethodField()
     leaderboard = serializers.SerializerMethodField()
     leaderboard_decimal_precision = serializers.SerializerMethodField()
diff --git a/apps/challenges/urls.py b/apps/challenges/urls.py
index 3139d5381c..edb8a7fc30 100644
--- a/apps/challenges/urls.py
+++ b/apps/challenges/urls.py
@@ -40,7 +40,8 @@
     ),
     # `A-Za-z` because it accepts either of `all, future, past or present` in either case
     url(
-        r"^challenge/(?P<challenge_time>[A-Za-z]+)/(?P<challenge_approved>[A-Za-z]+)/(?P<challenge_published>[A-Za-z]+)$",
+        r"^challenge/(?P<challenge_time>[A-Za-z]+)/(?P<challenge_approved>[A-Za-z]+)/"
+        r"(?P<challenge_published>[A-Za-z]+)$",
         views.get_all_challenges,
         name="get_all_challenges",
     ),
@@ -90,12 +91,13 @@
         name="create_challenge_using_zip_file",
     ),
     url(
-        r"^(?P<challenge_pk>[0-9]+)/challenge_phase/(?P<challenge_phase_pk>[0-9]+)/submissions$",
+        r"^(?P<challenge_pk>[0-9]+)/challenge_phase/(?P<version>(v1|v2))"
+        r"/(?P<challenge_phase_pk_or_slug>[-a-zA-Z0-9_]+)/submissions$",
         views.get_all_submissions_of_challenge,
         name="get_all_submissions_of_challenge",
     ),
     url(
-        r"^(?P<challenge_pk>[0-9]+)/phase/(?P<challenge_phase_pk>[0-9]+)"
+        r"^(?P<challenge_pk>[0-9]+)/phase/(?P<version>(v1|v2))/(?P<challenge_phase_pk_or_slug>[-a-zA-Z0-9_]+)"
         r"/download_all_submissions/(?P<file_type>[A-Za-z]+)/$",
         views.download_all_submissions,
         name="download_all_submissions",
diff --git a/apps/challenges/views.py b/apps/challenges/views.py
index 97daf932cf..aaafdc61a0 100644
--- a/apps/challenges/views.py
+++ b/apps/challenges/views.py
@@ -507,7 +507,6 @@ def get_participant_teams_for_challenge(request, challenge_pk):
 def add_participant_team_to_challenge(
     request, challenge_pk, participant_team_pk
 ):
-
     try:
         challenge = Challenge.objects.get(pk=challenge_pk)
     except Challenge.DoesNotExist:
@@ -1423,9 +1422,8 @@ def create_challenge_using_zip_file(request, challenge_host_team_pk):
                         ):
                             options = attribute.get("options")
                             if not options or not len(options):
-                                message = "Please include at least one option in attribute for challenge_phase {}".format(
-                                    data["id"]
-                                )
+                                message = "Please include at least one option in attribute"
+                                "for challenge_phase {}".format(data["id"])
                                 response_data = {"error": message}
                                 return Response(
                                     response_data,
@@ -1464,7 +1462,10 @@ def create_challenge_using_zip_file(request, challenge_host_team_pk):
                         )
                 else:
                     missing_keys_string = ", ".join(missing_keys)
-                    message = "Please enter the following to the default submission meta attribute in phase {}: {}.".format(
+                    message = (
+                        "Please enter the following to the default submission"
+                    )
+                    " meta attribute in phase {}: {}.".format(
                         data["id"], missing_keys_string
                     )
                     response_data = {"error": message}
@@ -2088,7 +2089,7 @@ def create_challenge_using_zip_file(request, challenge_host_team_pk):
 @permission_classes((permissions.IsAuthenticated, HasVerifiedEmail))
 @authentication_classes((JWTAuthentication, ExpiringTokenAuthentication))
 def get_all_submissions_of_challenge(
-    request, challenge_pk, challenge_phase_pk
+    request, challenge_pk, challenge_phase_pk_or_slug, version
 ):
     """
     Returns all the submissions for a particular challenge
@@ -2098,24 +2099,26 @@ def get_all_submissions_of_challenge(
 
     # To check for the corresponding challenge phase from the
     # challenge_phase_pk and challenge.
-    try:
-        challenge_phase = ChallengePhase.objects.get(
-            pk=challenge_phase_pk, challenge=challenge
-        )
-    except ChallengePhase.DoesNotExist:
-        response_data = {
-            "error": "Challenge Phase {} does not exist".format(
-                challenge_phase_pk
+    if version == "v2":
+        try:
+            challenge_phase = ChallengePhase.objects.get(
+                slug=challenge_phase_pk_or_slug, challenge=challenge
             )
-        }
-        return Response(response_data, status=status.HTTP_404_NOT_FOUND)
+        except ChallengePhase.DoesNotExist:
+            response_data = {
+                "error": "Challenge Phase {} does not exist".format(
+                    challenge_phase_pk_or_slug
+                )
+            }
+            return Response(response_data, status=status.HTTP_404_NOT_FOUND)
+    else:
+        challenge_phase = get_challenge_phase_model(challenge_phase_pk_or_slug)
 
     # To check for the user as a host of the challenge from the request and
     # challenge_pk.
     if is_user_a_host_of_challenge(
         user=request.user, challenge_pk=challenge_pk
     ):
-
         # Filter submissions on the basis of challenge for host for now. Later on, the support for query
         # parameters like challenge phase, date is to be added.
         submissions = Submission.objects.filter(
@@ -2138,7 +2141,6 @@ def get_all_submissions_of_challenge(
     elif has_user_participated_in_challenge(
         user=request.user, challenge_id=challenge_pk
     ):
-
         # get participant team object for the user for a particular challenge.
         participant_team_pk = get_participant_team_id_of_user_for_a_challenge(
             request.user, challenge_pk
@@ -2245,7 +2247,7 @@ def get_all_submissions_of_challenge(
 @permission_classes((permissions.IsAuthenticated, HasVerifiedEmail))
 @authentication_classes((JWTAuthentication, ExpiringTokenAuthentication))
 def download_all_submissions(
-    request, challenge_pk, challenge_phase_pk, file_type
+    request, challenge_pk, challenge_phase_pk_or_slug, file_type, version
 ):
     """
     API endpoint to download all the submissions for a particular challenge as a csv
@@ -2264,18 +2266,20 @@ def download_all_submissions(
 
     # To check for the corresponding challenge phase from the
     # challenge_phase_pk and challenge.
-    try:
-        challenge_phase = ChallengePhase.objects.get(
-            pk=challenge_phase_pk, challenge=challenge
-        )
-    except ChallengePhase.DoesNotExist:
-        response_data = {
-            "error": "Challenge Phase {} does not exist".format(
-                challenge_phase_pk
+    if version == "v2":
+        try:
+            challenge_phase = ChallengePhase.objects.get(
+                slug=challenge_phase_pk_or_slug, challenge=challenge
             )
-        }
-        return Response(response_data, status=status.HTTP_404_NOT_FOUND)
-
+        except ChallengePhase.DoesNotExist:
+            response_data = {
+                "error": "Challenge Phase {} does not exist".format(
+                    challenge_phase_pk_or_slug
+                )
+            }
+            return Response(response_data, status=status.HTTP_404_NOT_FOUND)
+    else:
+        challenge_phase = get_challenge_phase_model(challenge_phase_pk_or_slug)
     if request.method == "GET":
         if file_type == "csv":
             if is_user_a_host_of_challenge(
@@ -2370,7 +2374,6 @@ def download_all_submissions(
             elif has_user_participated_in_challenge(
                 user=request.user, challenge_id=challenge_pk
             ):
-
                 # get participant team object for the user for a particular
                 # challenge.
                 participant_team_pk = (
@@ -2924,7 +2927,6 @@ def get_aws_credentials_for_participant_team(request, phase_pk):
 @permission_classes((permissions.IsAuthenticated, HasVerifiedEmail))
 @authentication_classes((JWTAuthentication, ExpiringTokenAuthentication))
 def invite_users_to_challenge(request, challenge_pk):
-
     challenge = get_challenge_model(challenge_pk)
 
     if not challenge.is_active or not challenge.approved_by_admin:
@@ -4173,7 +4175,12 @@ def create_or_update_github_challenge(request, challenge_host_team_pk):
                         if serializer.is_valid():
                             serializer.save()
                         else:
-                            error_messages = f"challenge phase split (phase:{data['challenge_phase_id']}, leaderboard:{data['leaderboard_id']}, dataset split: {data['dataset_split_id']}):{str(serializer.errors)}"
+                            error_messages = (
+                                f"challenge phase split"
+                                f" (phase:{data['challenge_phase_id']},"
+                                f" leaderboard:{data['leaderboard_id']},"
+                                f" dataset split: {data['dataset_split_id']}):{str(serializer.errors)}"
+                            )
                             raise RuntimeError()
 
                 zip_config = ChallengeConfiguration.objects.get(
@@ -4363,7 +4370,6 @@ def create_or_update_github_challenge(request, challenge_host_team_pk):
                     challenge_phases_data,
                     files["challenge_test_annotation_files"],
                 ):
-
                     # Override the submission_meta_attributes when they are
                     # missing
                     submission_meta_attributes = data.get(
@@ -4552,7 +4558,12 @@ def create_or_update_github_challenge(request, challenge_host_team_pk):
                     if serializer.is_valid():
                         serializer.save()
                     else:
-                        error_messages = f"challenge phase split update (phase:{data['challenge_phase_id']}, leaderboard:{data['leaderboard_id']}, dataset split: {data['dataset_split_id']}):{str(serializer.errors)}"
+                        error_messages = (
+                            f"challenge phase split update"
+                            f"(phase:{data['challenge_phase_id']},"
+                            f"leaderboard:{data['leaderboard_id']},"
+                            f"dataset split: {data['dataset_split_id']}):{str(serializer.errors)}"
+                        )
                         raise RuntimeError()
 
                 response_data = {
@@ -4607,7 +4618,11 @@ def pwc_task_dataset(request):
         return Response(response_data, status=status.HTTP_200_OK)
     else:
         response_data = {
-            "error": "You are not authorized to make this request. Please ask EvalAI admin to add you as a staff user for accessing this API."
+            "error": (
+                "You are not authorized "
+                "to make this request. Please ask EvalAI admin to "
+                "add you as a staff user for accessing this API."
+            )
         }
         return Response(response_data, status=status.HTTP_406_NOT_ACCEPTABLE)
 
@@ -4833,7 +4848,10 @@ def request_challenge_approval_by_pk(request, challenge_pk):
             unfinished_phases.append(challenge_phase.name)
 
     if unfinished_phases:
-        error_message = f"The following challenge phases do not have finished submissions: {', '.join(unfinished_phases)}"
+        error_message = (
+            "The following challenge phases do not have finished submissions: "
+            f"{', '.join(unfinished_phases)}"
+        )
         return Response(
             {"error": error_message}, status=status.HTTP_406_NOT_ACCEPTABLE
         )
@@ -4899,13 +4917,19 @@ def request_challenge_approval_by_pk(request, challenge_pk):
                 }
                 return Response(response_data, status=status.HTTP_200_OK)
             else:
-                error_message = f"Sorry, there was an error sending approval request: {str(webhook_response.content.decode('utf-8'))}. Please try again."
+                error_message = (
+                    f"Sorry, there was an error sending approval request:"
+                    f" {str(webhook_response.content.decode('utf-8'))}. Please try again."
+                )
                 return Response(
                     {"error": error_message},
                     status=status.HTTP_406_NOT_ACCEPTABLE,
                 )
         else:
-            error_message = "Sorry, there was an error sending approval request: No response received. Please try again."
+            error_message = (
+                "Sorry, there was an error sending approval request:"
+                " No response received. Please try again."
+            )
             return Response(
                 {"error": error_message}, status=status.HTTP_406_NOT_ACCEPTABLE
             )
diff --git a/apps/jobs/urls.py b/apps/jobs/urls.py
index 314bf8592d..c85c881a69 100644
--- a/apps/jobs/urls.py
+++ b/apps/jobs/urls.py
@@ -11,7 +11,7 @@
     ),
     url(
         r"^challenge/(?P<challenge_id>[0-9]+)/"
-        r"challenge_phase/(?P<challenge_phase_id>[0-9]+)/submission/$",
+        r"challenge_phase/(?P<version>(v1|v2))/(?P<challenge_phase_pk_or_slug>[-a-zA-Z0-9_]+)/submission/$",
         views.challenge_submission,
         name="challenge_submission",
     ),
@@ -31,14 +31,16 @@
         name="resume_submission",
     ),
     url(
-        r"^challenge_phase_split/(?P<challenge_phase_split_id>[0-9]+)/leaderboard/$",
+        r"^challenge/(?P<challenge_pk>[0-9]+)/phase/(?P<phase_slug>[-a-zA-Z0-9_]+)/split/"
+        r"(?P<split_codename>[-a-zA-Z0-9_]+)/leaderboard/$",
         views.leaderboard,
-        name="leaderboard",
+        name="leaderboard_by_slug",
     ),
     url(
-        r"^phase_split/(?P<challenge_phase_split_pk>[0-9]+)/public_leaderboard_all_entries/$",
+        r"^challenge/(?P<challenge_pk>[0-9]+)/phase/(?P<phase_slug>[-a-zA-Z0-9_]+)/split/"
+        r"(?P<split_codename>[-a-zA-Z0-9_]+)/public_leaderboard_all_entries/$",
         views.get_all_entries_on_public_leaderboard,
-        name="get_all_entries_on_public_leaderboard",
+        name="get_all_entries_on_public_leaderboard_by_slug",
     ),
     url(
         r"^submission/(?P<submission_id>[0-9]+)$",
diff --git a/apps/jobs/views.py b/apps/jobs/views.py
index 0291ec9fbf..1e2c173e6e 100644
--- a/apps/jobs/views.py
+++ b/apps/jobs/views.py
@@ -137,7 +137,9 @@
 @throttle_classes([UserRateThrottle])
 @permission_classes((permissions.IsAuthenticated, HasVerifiedEmail))
 @authentication_classes((JWTAuthentication, ExpiringTokenAuthentication))
-def challenge_submission(request, challenge_id, challenge_phase_id):
+def challenge_submission(
+    request, challenge_id, challenge_phase_pk_or_slug, version
+):
     """API Endpoint for making a submission to a challenge"""
 
     # check if the challenge exists or not
@@ -148,13 +150,16 @@ def challenge_submission(request, challenge_id, challenge_phase_id):
         return Response(response_data, status=status.HTTP_400_BAD_REQUEST)
 
     # check if the challenge phase exists or not
-    try:
-        challenge_phase = ChallengePhase.objects.get(
-            pk=challenge_phase_id, challenge=challenge
-        )
-    except ChallengePhase.DoesNotExist:
-        response_data = {"error": "Challenge Phase does not exist"}
-        return Response(response_data, status=status.HTTP_400_BAD_REQUEST)
+    if version == "v2":
+        try:
+            challenge_phase = ChallengePhase.objects.get(
+                slug=challenge_phase_pk_or_slug, challenge=challenge
+            )
+        except ChallengePhase.DoesNotExist:
+            response_data = {"error": "Challenge Phase does not exist"}
+            return Response(response_data, status=status.HTTP_400_BAD_REQUEST)
+    else:
+        challenge_phase = get_challenge_phase_model(challenge_phase_pk_or_slug)
 
     if request.method == "GET":
         # getting participant team object for the user for a particular
@@ -197,7 +202,6 @@ def challenge_submission(request, challenge_id, challenge_phase_id):
         return paginator.get_paginated_response(response_data)
 
     elif request.method == "POST":
-
         # check if the challenge is active or not
         if not challenge.is_active:
             response_data = {"error": "Challenge is not active"}
@@ -313,7 +317,7 @@ def challenge_submission(request, challenge_id, challenge_phase_id):
                 request.data,
                 request.user.id,
                 request.method,
-                challenge_phase_id,
+                challenge_phase_pk_or_slug,
             )
             response_data = {
                 "message": "Please wait while your submission being evaluated!"
@@ -377,7 +381,7 @@ def challenge_submission(request, challenge_id, challenge_phase_id):
         )
         message = {
             "challenge_pk": challenge_id,
-            "phase_pk": challenge_phase_id,
+            "phase_pk": challenge_phase_pk_or_slug,
             "is_static_dataset_code_upload_submission": False,
         }
         if challenge.is_docker_based:
@@ -591,7 +595,7 @@ def change_submission_data_and_visibility(
 )
 @api_view(["GET"])
 @throttle_classes([AnonRateThrottle, UserRateThrottle])
-def leaderboard(request, challenge_phase_split_id):
+def leaderboard(request, challenge_pk, phase_slug, split_codename):
     """
     Returns leaderboard for a corresponding Challenge Phase Split
 
@@ -603,9 +607,18 @@ def leaderboard(request, challenge_phase_split_id):
     """
 
     # check if the challenge exists or not
-    challenge_phase_split = get_challenge_phase_split_model(
-        challenge_phase_split_id
-    )
+    try:
+        challenge_phase_split = ChallengePhaseSplit.objects.get(
+            challenge_phase__challenge__pk=challenge_pk,
+            challenge_phase__slug=phase_slug,
+            dataset_split__codename=split_codename,
+        )
+    except ChallengePhaseSplit.DoesNotExist:
+        response_data = {
+            "error": "Leaderboard for the given phase and split does not exist."
+        }
+        return Response(response_data, status=status.HTTP_404_NOT_FOUND)
+
     challenge_obj = challenge_phase_split.challenge_phase.challenge
     order_by = request.GET.get("order_by")
     (
@@ -623,11 +636,9 @@ def leaderboard(request, challenge_phase_split_id):
     if http_status_code == status.HTTP_400_BAD_REQUEST:
         return Response(response_data, status=http_status_code)
 
-    paginator, result_page = paginated_queryset(
-        response_data, request, pagination_class=StandardResultSetPagination()
-    )
-    response_data = result_page
-    return paginator.get_paginated_response(response_data)
+    paginator = StandardResultSetPagination()
+    result_page = paginator.paginate_queryset(response_data, request)
+    return paginator.get_paginated_response(result_page)
 
 
 @extend_schema(
@@ -757,7 +768,9 @@ def leaderboard(request, challenge_phase_split_id):
 @throttle_classes([AnonRateThrottle])
 @permission_classes((permissions.IsAuthenticated, HasVerifiedEmail))
 @authentication_classes((JWTAuthentication, ExpiringTokenAuthentication))
-def get_all_entries_on_public_leaderboard(request, challenge_phase_split_pk):
+def get_all_entries_on_public_leaderboard(
+    request, challenge_pk, phase_slug, split_codename
+):
     """
     Returns public/private leaderboard entries to corresponding challenge phase split for a challenge host
 
@@ -805,9 +818,17 @@ def get_all_entries_on_public_leaderboard(request, challenge_phase_split_pk):
     ```
     """
     # check if the challenge exists or not
-    challenge_phase_split = get_challenge_phase_split_model(
-        challenge_phase_split_pk
-    )
+    try:
+        challenge_phase_split = ChallengePhaseSplit.objects.get(
+            challenge_phase__challenge__pk=challenge_pk,
+            challenge_phase__slug=phase_slug,
+            dataset_split__codename=split_codename,
+        )
+    except ChallengePhaseSplit.DoesNotExist:
+        response_data = {
+            "error": "Leaderboard for the given phase and split does not exist."
+        }
+        return Response(response_data, status=status.HTTP_404_NOT_FOUND)
 
     challenge_obj = challenge_phase_split.challenge_phase.challenge
 
@@ -999,11 +1020,17 @@ def get_submission_by_pk(request, submission_id):
                 },
                 "submission_status": {
                     "type": "string",
-                    "description": "Final status of submission (can take one of these values): CANCELLED/FAILED/FINISHED",
+                    "description": (
+                        "Final status of submission (can take one of these values):"
+                        " CANCELLED/FAILED/FINISHED"
+                    ),
                 },
                 "result": {
                     "type": "array",
-                    "description": "Submission results in array format. API will throw an error if any split and/or metric is missing",
+                    "description": (
+                        "Submission results in array format."
+                        " API will throw an error if any split and/or metric is missing"
+                    ),
                     "items": {
                         "type": "object",
                         "properties": {
@@ -1138,7 +1165,8 @@ def update_submission(request, challenge_pk):
      - ``submission``: submission id, e.g. 123 (**required**)
      - ``stdout``: Stdout after evaluation, e.g. "Evaluation completed in 2 minutes" (**required**)
      - ``stderr``: Stderr after evaluation, e.g. "Failed due to incorrect file format" (**required**)
-     - ``environment_log``: Environment error after evaluation, e.g. "Failed due to attempted action being invalid" (**code upload challenge only**)
+     - ``environment_log``: Environment error after evaluation, e.g.
+        "Failed due to attempted action being invalid" (**code upload challenge only**)
      - ``submission_status``: Status of submission after evaluation
         (can take one of the following values: `FINISHED`/`CANCELLED`/`FAILED`), e.g. FINISHED (**required**)
      - ``result``: contains accuracies for each metric, (**required**) e.g.
@@ -1435,7 +1463,10 @@ def update_submission(request, challenge_pk):
                 },
                 "result": {
                     "type": "array",
-                    "description": "Submission results in array format. An error is thrown if any split and/or metric is missing",
+                    "description": (
+                        "Submission results in array format. "
+                        "An error is thrown if any split and/or metric is missing"
+                    ),
                     "items": {
                         "type": "object",
                         "properties": {
@@ -2101,7 +2132,6 @@ def resume_submission(request, submission_pk):
 @permission_classes((permissions.IsAuthenticated, HasVerifiedEmail))
 @authentication_classes((JWTAuthentication, ExpiringTokenAuthentication))
 def get_submissions_for_challenge(request, challenge_pk):
-
     challenge = get_challenge_model(challenge_pk)
 
     if not is_user_a_staff(request.user) and not is_user_a_host_of_challenge(
@@ -2701,7 +2731,8 @@ def get_submission_file_presigned_url(request, challenge_phase_pk):
         request {HttpRequest} -- The request object
         challenge_phase_pk {int} -- Challenge phase primary key
     Returns:
-         Response Object -- An object containing the presignd url and submission id, or an error message if some failure occurs
+         Response Object -- An object containing the presignd url and submission id,
+         or an error message if some failure occurs
     """
     if settings.DEBUG:
         response_data = {
@@ -2877,7 +2908,8 @@ def finish_submission_file_upload(request, challenge_phase_pk, submission_pk):
         challenge_phase_pk {int} -- Challenge phase primary key
         submission_pk {int} -- Submission primary key
     Returns:
-         Response Object -- An object containing the presignd url and submission id, or an error message if some failure occurs
+         Response Object -- An object containing the presignd url and
+         submission id, or an error message if some failure occurs
     """
     if settings.DEBUG:
         response_data = {
diff --git a/frontend/src/js/controllers/challengeCtrl.js b/frontend/src/js/controllers/challengeCtrl.js
index 57ab960200..a949b19397 100644
--- a/frontend/src/js/controllers/challengeCtrl.js
+++ b/frontend/src/js/controllers/challengeCtrl.js
@@ -1,5 +1,5 @@
 // Invoking IIFE for challenge page
-(function() {
+(function () {
 
     'use strict';
     angular
@@ -15,6 +15,10 @@
         vm.showPrivateIds = [];
         vm.showLeaderboardToggle = true;
         vm.challengeId = $stateParams.challengeId;
+        vm.allSubmissionPhaseSlug = $stateParams.allSubmissionPhaseSlug;
+        vm.mySubmissionPhaseSlug = $stateParams.mySubmissionPhaseSlug;
+        vm.phaseSlug = $stateParams.phaseSlug;
+        vm.splitCodename = $stateParams.splitCodename;
         vm.phaseId = null;
         vm.phaseSplitId = $stateParams.phaseSplitId;
         vm.input_file = null;
@@ -30,7 +34,7 @@
         vm.isParticipated = false;
         vm.isActive = false;
         vm.phases = {};
-        vm.phaseSplits = {};
+        vm.phaseSplits = [];
         vm.hasPrizes = false;
         vm.has_sponsors = false;
         vm.orderLeaderboardBy = decodeURIComponent($stateParams.metric);
@@ -50,8 +54,8 @@
         vm.poller = null;
         vm.isChallengeHost = false;
         vm.isDockerBased = false;
-        vm.stopLeaderboard = function() {};
-        vm.stopFetchingSubmissions = function() {};
+        vm.stopLeaderboard = function () { };
+        vm.stopFetchingSubmissions = function () { };
         vm.currentDate = null;
         vm.isPublished = false;
         vm.approved_by_admin = false;
@@ -111,7 +115,7 @@
         var gmtZone = 'GMT ' + gmtSign + ' ' + gmtHours + ':' + (gmtMinutes < 10 ? '0' : '') + gmtMinutes;
 
         vm.isStaticCodeUploadChallenge = false;
-        
+
         // get from backend
         vm.selectedWorkerResources = [512, 1024];
 
@@ -124,7 +128,7 @@
         // scroll to the selected entry after page has been rendered
         vm.scrollToEntryAfterLeaderboardLoads = function () {
             // get unique rank number from the url & if exists hightlight the entry
-            $timeout(function() {
+            $timeout(function () {
                 var elementId = $location.absUrl().split('?')[0].split('#')[1];
                 if (elementId) {
                     $anchorScroll.yOffset = 90;
@@ -176,23 +180,23 @@
 
         // API call to manage the worker from UI.
         // Response data will be like: {action: "Success" or "Failure", error: <String to include only if action is Failure.>}
-        vm.manageWorker = function(action){
-            parameters.url = 'challenges/' + vm.challengeId + '/manage_worker/' + action +'/';
+        vm.manageWorker = function (action) {
+            parameters.url = 'challenges/' + vm.challengeId + '/manage_worker/' + action + '/';
             parameters.method = 'PUT';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
-                    if (details.action == "Success"){
+                    if (details.action == "Success") {
                         $rootScope.notify("success", "Worker(s) " + action + "ed succesfully.");
                     }
                     else {
                         $rootScope.notify("error", details.error);
                     }
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data.error;
-                    if (error == undefined){
+                    if (error == undefined) {
                         $rootScope.notify("error", "There was an error.");
                     }
                     else {
@@ -203,13 +207,13 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.sendApprovalRequest = function() {
+        vm.sendApprovalRequest = function () {
             parameters.url = 'challenges/' + vm.challengeId + '/request_approval';
             parameters.method = 'GET';
             parameters.data = {};
-        
+
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var result = response.data;
                     if (result.error) {
                         $rootScope.notify("error", result.error);
@@ -217,7 +221,7 @@
                         $rootScope.notify("success", "Request sent successfully.");
                     }
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data.error;
                     if (error) {
                         $rootScope.notify("error", "There was an error: " + error);
@@ -226,10 +230,10 @@
                     }
                 }
             };
-        
+
             utilities.sendRequest(parameters);
         };
-        
+
         // Get the logs from worker if submissions are failing.
         vm.startLoadingLogs = function () {
             vm.logs_poller = $interval(function () {
@@ -269,11 +273,11 @@
             }, 5000);
         };
 
-        vm.stopLoadingLogs = function(){
+        vm.stopLoadingLogs = function () {
             $interval.cancel(vm.logs_poller);
         };
 
-         // highlight the specific entry of the leaderboard
+        // highlight the specific entry of the leaderboard
         vm.highlightSpecificLeaderboardEntry = function (key) {
             key = '#' + key;
             // Remove highlight from previous clicked entry
@@ -288,13 +292,13 @@
         };
 
         // get names of the team that has participated in the current challenge
-        vm.getTeamName = function(challengeId) {
+        vm.getTeamName = function (challengeId) {
             parameters.url = 'challenges/' + challengeId + '/participant_team/team_detail';
             parameters.method = 'GET';
-            parameters.data={};
+            parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
-                     var details = response.data;
+                onSuccess: function (response) {
+                    var details = response.data;
                     vm.participated_team_name = details["team_name"];
                     vm.eligible_to_submit = details["approved"];
                 },
@@ -302,7 +306,7 @@
             utilities.sendRequest(parameters);
         };
 
-            vm.displayDockerSubmissionInstructions = function (isDockerBased, isParticipated) {
+        vm.displayDockerSubmissionInstructions = function (isDockerBased, isParticipated) {
             // get remaining submission for docker based challenge
             if (isDockerBased && isParticipated == true && vm.eligible_to_submit) {
                 parameters.url = 'jobs/' + vm.challengeId + '/remaining_submissions/';
@@ -371,7 +375,7 @@
         parameters.url = 'challenges/challenge/' + vm.challengeId + '/';
         parameters.data = {};
         parameters.callback = {
-            onSuccess: function(response) {
+            onSuccess: function (response) {
                 var details = response.data;
                 vm.page = details;
                 var offset = new Date(vm.page.start_date).getTimezoneOffset();
@@ -388,7 +392,7 @@
                 vm.isStaticCodeUploadChallenge = details.is_static_dataset_code_upload;
                 vm.allowResumingSubmissions = details.allow_resuming_submissions;
                 vm.allowHostCancelSubmissions = details.allow_host_cancel_submissions,
-                vm.allowCancelRunningSubmissions = details.allow_cancel_running_submissions;
+                    vm.allowCancelRunningSubmissions = details.allow_cancel_running_submissions;
                 vm.allowParticipantsResubmissions = details.allow_participants_resubmissions;
                 vm.selectedWorkerResources = [details.worker_cpu_cores, details.worker_memory];
                 vm.manual_participant_approval = details.manual_participant_approval;
@@ -411,10 +415,10 @@
                     parameters.method = 'GET';
                     parameters.data = {};
                     parameters.callback = {
-                        onSuccess: function(response) {
+                        onSuccess: function (response) {
                             vm.prizes = response.data;
                         },
-                        onError: function(response) {
+                        onError: function (response) {
                             var error = response.data;
                             $rootScope.notify("error", error);
                         }
@@ -429,10 +433,10 @@
                     parameters.method = 'GET';
                     parameters.data = {};
                     parameters.callback = {
-                        onSuccess: function(response) {
+                        onSuccess: function (response) {
                             vm.sponsors = response.data;
                         },
-                        onError: function(response) {
+                        onError: function (response) {
                             var error = response.data;
                             $rootScope.notify("error", error);
                         }
@@ -447,7 +451,7 @@
                     parameters.method = 'GET';
                     parameters.data = {};
                     parameters.callback = {
-                        onSuccess: function(response) {
+                        onSuccess: function (response) {
                             var details = response.data;
                             vm.currentDate = details.datetime_now;
                             for (var i in details.challenge_participant_team_list) {
@@ -472,7 +476,7 @@
                                 parameters.url = 'participants/participant_team';
                                 parameters.method = 'GET';
                                 parameters.callback = {
-                                    onSuccess: function(response) {
+                                    onSuccess: function (response) {
                                         var status = response.status;
                                         var details = response.data;
                                         if (status == 200) {
@@ -509,7 +513,7 @@
 
 
                                             // select team from existing list
-                                            vm.selectExistTeam = function() {
+                                            vm.selectExistTeam = function () {
 
                                                 // loader for existing teams
                                                 vm.isExistLoader = true;
@@ -523,14 +527,14 @@
                                                 parameters.url = 'challenges/challenge/' + vm.challengeId + '/participant_team/' + vm.teamId;
                                                 parameters.method = 'POST';
                                                 parameters.callback = {
-                                                    onSuccess: function() {
+                                                    onSuccess: function () {
                                                         vm.isParticipated = true;
                                                         $state.go('web.challenge-main.challenge-page.submission');
                                                         vm.displayDockerSubmissionInstructions(vm.page.is_docker_based, vm.isParticipated);
                                                         vm.getTeamName(vm.challengeId);
                                                         vm.stopLoader();
                                                     },
-                                                    onError: function(response) {
+                                                    onError: function (response) {
                                                         if (response.status == 404) {
                                                             var error = "Please select a team first!";
                                                         } else {
@@ -544,7 +548,7 @@
                                             };
 
                                             // to load data with pagination
-                                            vm.load = function(url) {
+                                            vm.load = function (url) {
                                                 // loader for existing teams
                                                 vm.isExistLoader = true;
                                                 vm.loaderTitle = '';
@@ -560,7 +564,7 @@
                                                     };
 
                                                     //Add headers with in your request
-                                                    $http.get(url, { headers: headers }).then(function(response) {
+                                                    $http.get(url, { headers: headers }).then(function (response) {
                                                         // reinitialized data
                                                         var details = response.data;
                                                         vm.existTeam = details;
@@ -587,7 +591,7 @@
                                         }
                                         utilities.hideLoader();
                                     },
-                                    onError: function(response) {
+                                    onError: function (response) {
                                         var error = response.data;
                                         utilities.storeData('emailError', error.detail);
                                         $state.go('web.permission-denied');
@@ -601,7 +605,7 @@
                             vm.displayDockerSubmissionInstructions(vm.page.is_docker_based, vm.isParticipated);
                             utilities.hideLoader();
                         },
-                        onError: function() {
+                        onError: function () {
                             utilities.hideLoader();
                         }
                     };
@@ -611,7 +615,7 @@
                 utilities.hideLoader();
 
             },
-            onError: function(response) {
+            onError: function (response) {
                 var error = response.data;
                 $rootScope.notify("error", error.error);
                 $state.go('web.dashboard');
@@ -633,11 +637,11 @@
                 participationModalText = 'Open participation in the challenge?';
             }
             var confirm = $mdDialog.confirm()
-                          .title(participationModalText)
-                          .ariaLabel('')
-                          .targetEvent(ev)
-                          .ok('Yes, I\'m sure')
-                          .cancel('No');
+                .title(participationModalText)
+                .ariaLabel('')
+                .targetEvent(ev)
+                .ok('Yes, I\'m sure')
+                .cancel('No');
 
             $mdDialog.show(confirm).then(function () {
                 var challengeHostList = utilities.getData("challengeCreator");
@@ -653,20 +657,20 @@
                     "is_registration_open": !isRegistrationOpen
                 };
                 parameters.callback = {
-                    onSuccess: function() {
+                    onSuccess: function () {
                         vm.isRegistrationOpen = !vm.isRegistrationOpen;
                         $rootScope.notify('success', 'Participation is ' + participationState + ' successfully');
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         var details = response.data;
                         $rootScope.notify('error', details.error);
                     }
                 };
                 utilities.sendRequest(parameters);
-            }, function() {});
+            }, function () { });
         };
 
-        vm.makeSubmission = function() {
+        vm.makeSubmission = function () {
             if (vm.isParticipated && vm.eligible_to_submit) {
                 var fileVal = angular.element(".file-path").val();
                 if ((fileVal === null || fileVal === "") && (vm.fileUrl === null || vm.fileUrl === "")) {
@@ -685,7 +689,7 @@
                     if (vm.input_file) {
                         // vm.upload(vm.input_file);
                     }
-                    parameters.url = 'jobs/challenge/' + vm.challengeId + '/challenge_phase/' + vm.phaseId + '/submission/';
+                    parameters.url = 'jobs/challenge/' + vm.challengeId + '/challenge_phase/' + "v1/" + vm.phaseId + '/submission/';
                     parameters.method = 'POST';
                     var formData = new FormData();
                     if (vm.isSubmissionUsingUrl) {
@@ -717,12 +721,12 @@
 
                     parameters.token = userKey;
                     parameters.callback = {
-                        onSuccess: function() {
+                        onSuccess: function () {
                             // vm.input_file.name = '';
 
                             angular.forEach(
                                 angular.element("input[type='file']"),
-                                function(inputElem) {
+                                function (inputElem) {
                                     angular.element(inputElem).val(null);
                                 }
                             );
@@ -744,7 +748,7 @@
                             vm.metaAttributesforCurrentSubmission = null;
                             vm.stopLoader();
                         },
-                        onError: function(response) {
+                        onError: function (response) {
                             var status = response.status;
                             var error = response.data;
 
@@ -758,7 +762,7 @@
                             if (status == 404) {
                                 vm.subErrors.msg = "Please select phase!";
                             } else {
-                                if (error.error){
+                                if (error.error) {
                                     vm.subErrors.msg = error.error;
                                 } else {
                                     vm.subErrors.msg = error.input_file[0];
@@ -777,24 +781,34 @@
         parameters.method = 'GET';
         parameters.data = {};
         parameters.callback = {
-            onSuccess: function(response) {
+            onSuccess: function (response) {
                 var details = response.data;
                 vm.phases = details;
-                for (var i=0; i<details.count; i++) {
+                for (var i = 0; i < details.count; i++) {
                     if (details.results[i].is_public == false) {
                         vm.phases.results[i].showPrivate = true;
                     }
                 }
-                for (var j=0; j<vm.phases.results.length; j++){
+                for (var j = 0; j < vm.phases.results.length; j++) {
                     var offset = new Date(vm.phases.results[j].start_date).getTimezoneOffset();
                     vm.phases.results[j].time_zone = moment.tz.zone(timezone).abbr(offset);
                     vm.phases.results[j].gmt_zone = gmtZone;
                 }
 
-                for(var k=0; k<details.count; k++){
-                    if (details.results[k].submission_meta_attributes != undefined || details.results[k].submission_meta_attributes != null){
+
+                if (vm.mySubmissionPhaseSlug) {
+                    vm.getResults(vm.mySubmissionPhaseSlug);
+                }
+
+
+                if (vm.allSubmissionPhaseSlug) {
+                    vm.getAllSubmissionResults(vm.allSubmissionPhaseSlug);
+                }
+
+                for (var k = 0; k < details.count; k++) {
+                    if (details.results[k].submission_meta_attributes != undefined || details.results[k].submission_meta_attributes != null) {
                         var attributes = details.results[k].submission_meta_attributes;
-                        attributes.forEach(function(attribute){
+                        attributes.forEach(function (attribute) {
                             if (attribute["type"] == "checkbox") {
                                 attribute["values"] = [];
                             }
@@ -802,11 +816,11 @@
                                 attribute["value"] = null;
                             }
                         });
-                        data = {"phaseId":details.results[k].id, "attributes": attributes};
+                        data = { "phaseId": details.results[k].id, "attributes": attributes };
                         vm.submissionMetaAttributes.push(data);
                     }
                     else {
-                        var data = {"phaseId":details.results[k].id, "attributes": null};
+                        var data = { "phaseId": details.results[k].id, "attributes": null };
                         vm.submissionMetaAttributes.push(data);
                     }
                     if (details.results[k].allowed_submission_file_types != undefined || details.results[k].allowed_submission_file_types != null) {
@@ -830,7 +844,7 @@
                         });
                     } else {
                         vm.defaultSubmissionMetaAttributes.push({
-                            "phaseId":details.results[k].id,
+                            "phaseId": details.results[k].id,
                             "defaultAttributes": {}
                         });
                     }
@@ -841,7 +855,7 @@
                 }
                 utilities.hideLoader();
             },
-            onError: function(response) {
+            onError: function (response) {
                 var error = response.data;
                 utilities.storeData('emailError', error.detail);
                 $state.go('web.permission-denied');
@@ -851,27 +865,27 @@
 
         utilities.sendRequest(parameters);
 
-        vm.loadPhaseAttributes = function(phaseId){ // Loads attributes of a phase into vm.submissionMetaAttributes
-            vm.metaAttributesforCurrentSubmission = vm.submissionMetaAttributes.find(function(element){
+        vm.loadPhaseAttributes = function (phaseId) { // Loads attributes of a phase into vm.submissionMetaAttributes
+            vm.metaAttributesforCurrentSubmission = vm.submissionMetaAttributes.find(function (element) {
                 return element["phaseId"] == phaseId;
             }).attributes;
-            vm.currentPhaseAllowedSubmissionFileTypes = vm.allowedSubmissionFileTypes.find(function(element) {
+            vm.currentPhaseAllowedSubmissionFileTypes = vm.allowedSubmissionFileTypes.find(function (element) {
                 return element["phaseId"] == phaseId;
             }).allowedSubmissionFileTypes;
             // load default meta attributes visibility for current phase
-            vm.currentPhaseMetaAttributesVisibility = vm.defaultSubmissionMetaAttributes.find(function(element) {
+            vm.currentPhaseMetaAttributesVisibility = vm.defaultSubmissionMetaAttributes.find(function (element) {
                 return element["phaseId"] == phaseId;
             }).defaultAttributes;
-            vm.currentPhaseLeaderboardPublic = vm.phaseLeaderboardPublic.find(function(element) {
+            vm.currentPhaseLeaderboardPublic = vm.phaseLeaderboardPublic.find(function (element) {
                 return element["phaseId"] == phaseId;
             }).leaderboardPublic;
             vm.subErrors.msg = "";
         };
 
-        vm.getDefaultMetaAttributesDict = function(defaultMetaAttributes) {
+        vm.getDefaultMetaAttributesDict = function (defaultMetaAttributes) {
             var defaultMetaAttributesDict = {};
             if (defaultMetaAttributes != undefined && defaultMetaAttributes != null) {
-                defaultMetaAttributes.forEach(function(attribute) {
+                defaultMetaAttributes.forEach(function (attribute) {
                     var attributeName = attribute["name"];
                     var is_visible = attribute["is_visible"];
                     defaultMetaAttributesDict[attributeName] = is_visible;
@@ -880,10 +894,10 @@
             return defaultMetaAttributesDict;
         };
 
-        vm.clearMetaAttributeValues = function(){
-            if (vm.metaAttributesforCurrentSubmission != null){
-                vm.metaAttributesforCurrentSubmission.forEach(function(attribute){
-                    if (attribute.type == 'checkbox'){
+        vm.clearMetaAttributeValues = function () {
+            if (vm.metaAttributesforCurrentSubmission != null) {
+                vm.metaAttributesforCurrentSubmission.forEach(function (attribute) {
+                    if (attribute.type == 'checkbox') {
                         attribute.values = [];
                     }
                     else {
@@ -893,10 +907,10 @@
             }
         };
 
-        vm.isCurrentSubmissionMetaAttributeValid = function() {
+        vm.isCurrentSubmissionMetaAttributeValid = function () {
             var isMetaAttributeValid = true;
             if (vm.metaAttributesforCurrentSubmission !== null) {
-                vm.metaAttributesforCurrentSubmission.forEach(function(attribute) {
+                vm.metaAttributesforCurrentSubmission.forEach(function (attribute) {
                     if (attribute.required == true) {
                         if (attribute.type == "checkbox") {
                             if (attribute.values.length === 0) {
@@ -913,15 +927,15 @@
             return isMetaAttributeValid;
         };
 
-        vm.toggleSelection = function toggleSelection(attribute, value){ // Make sure this modifies the reference object.
-                var idx = attribute.values.indexOf(value);
-                if (idx > -1) {
-                  attribute.values.splice(idx, 1);
-                }
-                else {
-                  attribute.values.push(value);
-                }
-            };
+        vm.toggleSelection = function toggleSelection(attribute, value) { // Make sure this modifies the reference object.
+            var idx = attribute.values.indexOf(value);
+            if (idx > -1) {
+                attribute.values.splice(idx, 1);
+            }
+            else {
+                attribute.values.push(value);
+            }
+        };
 
         var challengePhaseVisibility = {
             owner_and_host: 1,
@@ -929,28 +943,35 @@
             public: 3,
         };
 
-        // get details of the particular challenge phase split
+
         parameters.url = 'challenges/' + vm.challengeId + '/challenge_phase_split';
         parameters.method = 'GET';
         parameters.data = {};
         parameters.callback = {
-            onSuccess: function(response) {
+            onSuccess: function (response) {
                 var details = response.data;
                 vm.phaseSplits = details;
                 if (details.length == 0) {
-                    vm.isChallengeLeaderboardPrivate = true; 
+                    vm.isChallengeLeaderboardPrivate = true;
                 }
-                for(var i=0; i<details.length; i++) {
-                    if (details[i].visibility !== challengePhaseVisibility.public) {
+                for (var i = 0; i < details.length; i++) {
+                    var split = details[i];
+                    if (split.visibility !== challengePhaseVisibility.public) {
                         vm.phaseSplits[i].showPrivate = true;
-                        vm.showPrivateIds.push(vm.phaseSplits[i].id);
+                        vm.showPrivateIds.push(split.id);
                     }
-                    vm.isMultiMetricLeaderboardEnabled[vm.phaseSplits[i].id] = vm.phaseSplits[i].is_multi_metric_leaderboard;
-                    vm.phaseSplitLeaderboardSchema[vm.phaseSplits[i].id] = vm.phaseSplits[i].leaderboard_schema;
+                    // This line is the key. It populates the object needed by the ng-if.
+                    vm.isMultiMetricLeaderboardEnabled[split.id] = split.is_multi_metric_leaderboard;
+
+                    vm.phaseSplitLeaderboardSchema[split.id] = split.leaderboard_schema;
+                }
+
+                if (vm.phaseSlug && vm.splitCodename) {
+                    vm.getLeaderboard(vm.phaseSlug, vm.splitCodename);
                 }
                 utilities.hideLoader();
             },
-            onError: function(response) {
+            onError: function (response) {
                 var error = response.data;
                 utilities.storeData('emailError', error.detail);
                 $state.go('web.permission-denied');
@@ -962,7 +983,7 @@
 
         // define a custom sorting function
         vm.lastKey = null;
-        vm.sortFunction = function(key) {
+        vm.sortFunction = function (key) {
             // check which column is selected
             // so that the values can be parsed properly
             if (vm.sortColumn === 'date') {
@@ -974,17 +995,17 @@
             else if (vm.sortColumn === 'number') {
                 return parseFloat(key.result[vm.columnIndexSort]);
             }
-            else if (vm.sortColumn === 'string'){
-                // sort teams alphabetically
+            else if (vm.sortColumn === 'string') {
+
                 return key.submission__participant_team__team_name;
             }
-            else if (vm.sortColumn == 'exec'){
+            else if (vm.sortColumn == 'exec') {
                 return key.submission__execution_time;
             }
             return 0;
         };
 
-        vm.sortLeaderboard = function(scope, column, index) {
+        vm.sortLeaderboard = function (scope, column, index) {
             if (index == null || index == undefined) {
                 scope.reverseSort = scope.sortColumn != column ? false : !scope.reverseSort;
             } else {
@@ -994,7 +1015,7 @@
             scope.sortColumn = column;
         };
 
-        vm.isMetricOrderedAscending = function(metric) {
+        vm.isMetricOrderedAscending = function (metric) {
             let schema = vm.leaderboard[0].leaderboard__schema;
             let metadata = schema.metadata;
             if (metadata != null && metadata != undefined) {
@@ -1007,7 +1028,7 @@
             return false;
         };
 
-        vm.getLabelDescription = function(metric) {
+        vm.getLabelDescription = function (metric) {
             let schema = vm.leaderboard[0].leaderboard__schema;
             let metadata = schema.metadata;
             if (metadata != null && metadata != undefined) {
@@ -1023,19 +1044,20 @@
         // my submissions
         vm.isResult = false;
 
-        vm.startLeaderboard = function() {
+        vm.startLeaderboard = function () {
             vm.stopLeaderboard();
-            vm.poller = $interval(function() {
-                parameters.url = "jobs/" + "challenge_phase_split/" + vm.phaseSplitId + "/leaderboard/?page_size=1000&order_by=" + vm.orderLeaderboardBy;
+            vm.poller = $interval(function () {
+                // Use the new slug-based URL format
+                parameters.url = `jobs/challenge/${vm.challengeId}/phase/${vm.phaseSlug}/split/${vm.splitCodename}/leaderboard/?page_size=1000&order_by=${vm.orderLeaderboardBy}`;
                 parameters.method = 'GET';
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var details = response.data;
                         if (vm.leaderboard.count !== details.results.count) {
                             vm.showLeaderboardUpdate = true;
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         var error = response.data;
                         utilities.storeData('emailError', error.detail);
                         $state.go('web.permission-denied');
@@ -1046,150 +1068,116 @@
                 utilities.sendRequest(parameters);
             }, 10000);
         };
-
-        vm.getLeaderboard = function(phaseSplitId) {
-            vm.stopLeaderboard = function() {
+        vm.getLeaderboard = function (phaseSlug, splitCodename) {
+            vm.stopLeaderboard = function () {
                 $interval.cancel(vm.poller);
             };
             vm.stopLeaderboard();
 
+
+            vm.phaseSlug = phaseSlug;
+            vm.splitCodename = splitCodename;
+
             vm.isResult = true;
-            vm.phaseSplitId = phaseSplitId;
-            // loader for existing teams
             vm.isExistLoader = true;
             vm.loaderTitle = '';
             vm.loaderContainer = angular.element('.exist-team-card');
-
             vm.startLoader("Loading Leaderboard Items");
 
-            // get the selected phase split object
-            parameters.url = "challenges/challenge/create/challenge_phase_split/" + vm.phaseSplitId + "/";
-            parameters.method = "GET";
-            parameters.data = {};
-            parameters.callback = {
-                onSuccess: function (response) {
-                    vm.selectedPhaseSplit = response.data;
-                    vm.sortLeaderboardTextOption = (vm.selectedPhaseSplit.show_leaderboard_by_latest_submission) ?
-                        "Sort by best":"Sort by latest";
-                },
-                onError: function (response) {
-                    var error = response.data;
-                    vm.stopLoader();
-                    $rootScope.notify("error", error);
-                    return false;
-                }
-            };
-            utilities.sendRequest(parameters);
+            // Find the corresponding phase split object from the already loaded vm.phaseSplits
+            var currentPhaseSplit = vm.phaseSplits.find(ps => ps.challenge_phase_slug === phaseSlug && ps.dataset_split_codename === splitCodename);
+            if (currentPhaseSplit) {
+                vm.phaseSplitId = currentPhaseSplit.id;
+                vm.selectedPhaseSplit = currentPhaseSplit;
+            }
 
             // Show leaderboard
             vm.leaderboard = {};
-            parameters.url = "jobs/" + "challenge_phase_split/" + vm.phaseSplitId + "/leaderboard/?page_size=1000&order_by=" + vm.orderLeaderboardBy;
+            parameters.url = `jobs/challenge/${vm.challengeId}/phase/${phaseSlug}/split/${splitCodename}/leaderboard/?page_size=1000&order_by=${vm.orderLeaderboardBy}`;
             parameters.method = 'GET';
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
                     vm.leaderboard = details.results;
-                    for (var j=0; j<vm.showPrivateIds.length; j++) {
-                        if (vm.showPrivateIds[j] == vm.phaseSplitId) {
-                            vm.showLeaderboardToggle = false;
-                            break;
-                        }
-                    }
-                    for (var i=0; i<vm.leaderboard.length; i++) {
-                        if (vm.leaderboard[i].submission__submission_metadata == null){
-                            vm.showSubmissionMetaAttributesOnLeaderboard = false;
+
+
+
+                    if (vm.leaderboard && vm.leaderboard.length > 0) {
+                        var allMetricIndices = [];
+
+                        var labels = vm.leaderboard[0].leaderboard__schema.labels;
+                        for (var k = 0; k < labels.length; k++) {
+                            allMetricIndices.push(k.toString());
                         }
-                        else {
-                            vm.showSubmissionMetaAttributesOnLeaderboard = true;
+
+                        vm.chosenMetrics = allMetricIndices;
+
+
+                        if (vm.phaseSplitId) {
+                            vm.phaseSplitLeaderboardSchema[vm.phaseSplitId] = vm.leaderboard[0].leaderboard__schema;
                         }
+                    }
 
-                        var leaderboardLabels = vm.leaderboard[i].leaderboard__schema.labels;
-                        var index = leaderboardLabels.findIndex(label => label === vm.orderLeaderboardBy);
-                        vm.chosenMetrics = index !== -1 ? [index.toString()]: undefined;
+
+                    for (var i = 0; i < vm.leaderboard.length; i++) {
                         vm.leaderboard[i]['submission__submitted_at_formatted'] = vm.leaderboard[i]['submission__submitted_at'];
-                        vm.initial_ranking[vm.leaderboard[i].id] = i+1;
+                        vm.initial_ranking[vm.leaderboard[i].id] = i + 1;
+
                         var dateTimeNow = moment(new Date());
                         var submissionTime = moment(vm.leaderboard[i].submission__submitted_at);
                         var duration = moment.duration(dateTimeNow.diff(submissionTime));
-                        if (duration._data.years != 0) {
-                            var years = duration.asYears();
-                            vm.leaderboard[i].submission__submitted_at = years;
-                            if (years.toFixed(0)==1) {
-                                vm.leaderboard[i].timeSpan = 'year';
-                            } else {
-                                vm.leaderboard[i].timeSpan= 'years';
-                            }
-                        }
-                        else if (duration._data.months !=0) {
-                            var months = duration.months();
-                            vm.leaderboard[i].submission__submitted_at = months;
-                            if (months.toFixed(0)==1) {
-                                vm.leaderboard[i].timeSpan = 'month';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'months';
-                            }
-                        }
-                        else if (duration._data.days !=0) {
-                            var days = duration.asDays();
-                            vm.leaderboard[i].submission__submitted_at = days;
-                            if (days.toFixed(0)==1) {
-                                vm.leaderboard[i].timeSpan = 'day';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'days';
-                            }
-                        }
-                        else if (duration._data.hours !=0) {
-                            var hours = duration.asHours();
-                            vm.leaderboard[i].submission__submitted_at = hours;
-                            if (hours.toFixed(0)==1) {
-                                vm.leaderboard[i].timeSpan = 'hour';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'hours';
-                            }
-                        }
-                        else if (duration._data.minutes !=0) {
-                            var minutes = duration.asMinutes();
-                            vm.leaderboard[i].submission__submitted_at = minutes;
-                            if (minutes.toFixed(0)==1) {
-                                vm.leaderboard[i].timeSpan = 'minute';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'minutes';
-                            }
-                        }
-                        else if (duration._data.seconds != 0) {
-                            var second = duration.asSeconds();
-                            vm.leaderboard[i].submission__submitted_at = second;
-                            if (second.toFixed(0)==1) {
-                                vm.leaderboard[i].timeSpan = 'second';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'seconds';
-                            }
+                        var timeValue, timeSpan;
+
+                        if (duration.asYears() >= 1) {
+                            timeValue = Math.floor(duration.asYears());
+                            timeSpan = timeValue === 1 ? 'year' : 'years';
+                        } else if (duration.asMonths() >= 1) { // The new, correct block for months
+                            timeValue = Math.floor(duration.asMonths());
+                            timeSpan = timeValue === 1 ? 'month' : 'months';
+                        } else if (duration.asDays() >= 1) {
+                            timeValue = Math.floor(duration.asDays());
+                            timeSpan = timeValue === 1 ? 'day' : 'days';
+                        } else if (duration.asHours() >= 1) {
+                            timeValue = Math.floor(duration.asHours());
+                            timeSpan = timeValue === 1 ? 'hour' : 'hours';
+                        } else if (duration.asMinutes() >= 1) {
+                            timeValue = Math.floor(duration.asMinutes());
+                            timeSpan = timeValue === 1 ? 'minute' : 'minutes';
+                        } else {
+                            timeValue = Math.floor(duration.asSeconds());
+                            timeSpan = timeValue === 1 ? 'second' : 'seconds';
                         }
+
+                        vm.leaderboard[i].submission__submitted_at = timeValue;
+                        vm.leaderboard[i].timeSpan = timeSpan;
+                    }
+
+                    if (currentPhaseSplit) {
+                        vm.phaseName = currentPhaseSplit.id;
                     }
-                    vm.phaseName = vm.phaseSplitId;
                     vm.startLeaderboard();
                     vm.stopLoader();
                     vm.scrollToEntryAfterLeaderboardLoads();
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     vm.leaderboard.error = error;
                     vm.stopLoader();
                 }
             };
-
             utilities.sendRequest(parameters);
         };
-        
-        vm.showMetaAttributesDialog = function(ev, attributes){
-            if (attributes != false){
+
+
+        vm.showMetaAttributesDialog = function (ev, attributes) {
+            if (attributes != false) {
                 vm.metaAttributesData = [];
-                attributes.forEach(function(attribute){
+                attributes.forEach(function (attribute) {
                     if (attribute.type != "checkbox") {
-                        vm.metaAttributesData.push({"name": attribute.name, "value": attribute.value});
+                        vm.metaAttributesData.push({ "name": attribute.name, "value": attribute.value });
                     }
                     else {
-                        vm.metaAttributesData.push({"name": attribute.name, "values": attribute.values});
+                        vm.metaAttributesData.push({ "name": attribute.name, "values": attribute.values });
                     }
                 });
 
@@ -1206,19 +1194,50 @@
             }
         };
 
-        vm.getResults = function(phaseId) {
-            // long polling (5s) for leaderboard
-            vm.start = function() {
+        vm.getResults = function (phaseSlug) {
+
+            vm.stopFetchingSubmissions();
+            vm.isResult = true;
+
+
+            vm.mySubmissionPhaseSlug = phaseSlug;
+
+
+            var numericPhaseId = null;
+            var all_phases = vm.phases.results;
+            for (var i = 0; i < all_phases.length; i++) {
+
+                if (all_phases[i].slug === phaseSlug) {
+                    numericPhaseId = all_phases[i].id;
+
+
+                    vm.currentPhaseLeaderboardPublic = all_phases[i].leaderboard_public;
+                    vm.isCurrentPhaseRestrictedToSelectOneSubmission = all_phases[i].is_restricted_to_select_one_submission;
+
+                    var attributes = all_phases[i].default_submission_meta_attributes;
+                    var defaultMetaAttributes = vm.getDefaultMetaAttributesDict(attributes);
+                    vm.currentPhaseMetaAttributesVisibility = defaultMetaAttributes;
+
+
+                    break;
+                }
+            }
+
+
+
+            vm.phaseId = numericPhaseId;
+
+
+            vm.start = function () {
                 vm.stopFetchingSubmissions();
-                vm.poller = $interval(function() {
-                    parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/submission/?page=" + Math.ceil(vm.currentPage);
+                vm.poller = $interval(function () {
+
+                    parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + "v2/" + vm.mySubmissionPhaseSlug + "/submission/?page=" + Math.ceil(vm.currentPage);
                     parameters.method = 'GET';
                     parameters.data = {};
                     parameters.callback = {
-                        onSuccess: function(response) {
+                        onSuccess: function (response) {
                             var details = response.data;
-
-                            // Set the is_public flag corresponding to each submission
                             for (var i = 0; i < details.results.length; i++) {
                                 vm.submissionVisibility[details.results[i].id] = details.results[i].is_public;
                                 vm.baselineStatus[details.results[i].id] = details.results[i].is_baseline;
@@ -1236,100 +1255,77 @@
                                 }
                             }
                         },
-                        onError: function(response) {
+                        onError: function (response) {
                             var error = response.data;
                             utilities.storeData('emailError', error.detail);
                             $state.go('web.permission-denied');
                             vm.stopLoader();
                         }
                     };
-
                     utilities.sendRequest(parameters);
                 }, 10000);
             };
 
-            vm.stopFetchingSubmissions = function() {
+            vm.stopFetchingSubmissions = function () {
                 $interval.cancel(vm.poller);
             };
-            vm.stopFetchingSubmissions();
-            vm.isResult = true;
-            if (phaseId !== undefined) {
-                vm.phaseId = phaseId;
-            }
 
-            var all_phases = vm.phases.results;
-            for (var i = 0; i < vm.phases.results.length; i++) {
-                if (all_phases[i].id == phaseId) {
-                    vm.currentPhaseLeaderboardPublic = all_phases[i].leaderboard_public;
-                    vm.isCurrentPhaseRestrictedToSelectOneSubmission = all_phases[i].is_restricted_to_select_one_submission;
-
-                    var attributes = all_phases[i].default_submission_meta_attributes;
-                    var defaultMetaAttributes = vm.getDefaultMetaAttributesDict(attributes);
-                    vm.currentPhaseMetaAttributesVisibility = defaultMetaAttributes;
-                    break;
-                }
-            }
 
-            parameters.url = "analytics/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/count";
+            parameters.url = "analytics/challenge/" + vm.challengeId + "/challenge_phase/" + "v2/" + vm.mySubmissionPhaseSlug + "/count";
             parameters.method = 'GET';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
                     vm.submissionCount = details.participant_team_submission_count;
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     $rootScope.notify("error", error);
                 }
             };
             utilities.sendRequest(parameters);
 
-            // loader for existing teams
+
             vm.isExistLoader = true;
             vm.loaderTitle = '';
             vm.loaderContainer = angular.element('.exist-team-card');
-
             vm.startLoader("Loading Submissions");
-
-            // get submissions of a particular challenge phase
             vm.isNext = '';
             vm.isPrev = '';
             vm.currentPage = '';
             vm.showPagination = false;
 
+            // Use the slug in the URL for the initial submission fetch
             if (vm.filter_my_submission_by_team_name === '') {
-                parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" +
-                vm.phaseId + "/submission/";
+                parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + "v2/" +
+                    vm.mySubmissionPhaseSlug + "/submission/";
             } else {
-                parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" +
-                vm.phaseId + "/submission?participant_team__team_name=" + vm.filter_my_submission_by_team_name;
+                parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + "v2/" +
+                    vm.mySubmissionPhaseSlug + "/submission?participant_team__team_name=" + vm.filter_my_submission_by_team_name;
             }
             parameters.method = 'GET';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
 
                     for (var i = 0; i < details.results.length; i++) {
                         vm.submissionVisibility[details.results[i].id] = details.results[i].is_public;
                         vm.baselineStatus[details.results[i].id] = details.results[i].is_baseline;
                         vm.verifiedStatus[details.results[i].id] = details.results[i].is_verified_by_host;
-                        // Set previous public submission id for phases with one public submission restriction
                         if (details.results[i].is_public) {
                             vm.previousPublicSubmissionId = details.results[i].id;
                         }
                     }
 
                     vm.submissionResult = details;
-
-                    vm.start();
+                    vm.start(); // Start the long polling after the first load
 
                     if (vm.submissionResult.count === 0) {
                         vm.showPagination = false;
                         vm.paginationMsg = "No results found";
                     } else {
-
                         vm.showPagination = true;
                         vm.paginationMsg = "";
                     }
@@ -1338,7 +1334,6 @@
                         vm.isNext = 'disabled';
                     } else {
                         vm.isNext = '';
-
                     }
                     if (vm.submissionResult.previous === null) {
                         vm.isPrev = 'disabled';
@@ -1353,27 +1348,18 @@
                         vm.currentRefPage = Math.ceil(vm.currentPage);
                     }
 
-                    vm.load = function(url) {
-                        // loader for existing teams
+                    vm.load = function (url) {
                         vm.isExistLoader = true;
                         vm.loaderTitle = '';
                         vm.loaderContainer = angular.element('.exist-team-card');
-
                         vm.startLoader("Loading Submissions");
-                        if (url !== null) {
 
-                            //store the header data in a variable
-                            var headers = {
-                                'Authorization': "Token " + userKey
-                            };
-
-                            //Add headers with in your request
-                            $http.get(url, { headers: headers }).then(function(response) {
-                                // reinitialized data
+                        if (url !== null) {
+                            var headers = { 'Authorization': "Token " + userKey };
+                            $http.get(url, { headers: headers }).then(function (response) {
                                 var details = response.data;
                                 vm.submissionResult = details;
 
-                                // condition for pagination
                                 if (vm.submissionResult.next === null) {
                                     vm.isNext = 'disabled';
                                     vm.currentPage = vm.submissionResult.count / 150;
@@ -1395,21 +1381,21 @@
                             vm.stopLoader();
                         }
                     };
+                    vm.mySubmissionPhaseName = phaseSlug; // Use phaseSlug for display name
                     vm.stopLoader();
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
-                    utilities.storeData('emailError', error.detail);
+                    var errorDetail = (error && error.detail) ? error.detail : error;
+                    utilities.storeData('emailError', errorDetail);
                     $state.go('web.permission-denied');
                     vm.stopLoader();
                 }
             };
-
             utilities.sendRequest(parameters);
         };
-
-        vm.refreshSubmissionData = function() {
-
+        vm.refreshSubmissionData = function () {
+            vm.phaseId = (vm.allSubmissionPhaseSlug == undefined) ? vm.mySubmissionPhaseSlug : vm.allSubmissionPhaseSlug;
             // get submissions of a particular challenge phase
 
             if (!vm.isResult) {
@@ -1424,11 +1410,11 @@
             vm.startLoader("Loading Submissions");
             vm.submissionResult = {};
 
-            parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/submission/?page=" + Math.ceil(vm.currentPage);
+            parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + "v2/" + vm.phaseId + "/submission/?page=" + Math.ceil(vm.currentPage);
             parameters.method = 'GET';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
                     vm.submissionResult = details;
 
@@ -1472,7 +1458,7 @@
                     vm.showUpdate = false;
                     vm.stopLoader();
                 },
-                onError: function() {
+                onError: function () {
                     vm.stopLoader();
                 }
             };
@@ -1480,17 +1466,17 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.reRunSubmission = function(submissionObject) {
+        vm.reRunSubmission = function (submissionObject) {
             submissionObject.classList = ['spin', 'progress-indicator'];
             parameters.url = 'jobs/submissions/' + submissionObject.id + '/re-run/';
             parameters.method = 'POST';
             parameters.token = userKey;
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     $rootScope.notify("success", response.data.success);
                     submissionObject.classList = [''];
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     $rootScope.notify("error", error);
                     submissionObject.classList = [''];
@@ -1499,17 +1485,17 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.resumeSubmission = function(submissionObject) {
+        vm.resumeSubmission = function (submissionObject) {
             submissionObject.classList2 = ['progress-indicator'];
             parameters.url = 'jobs/submissions/' + submissionObject.id + '/resume/';
             parameters.method = 'POST';
             parameters.token = userKey;
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     $rootScope.notify("success", response.data.success);
                     submissionObject.classList2 = [''];
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     $rootScope.notify("error", error);
                     submissionObject.classList2 = [''];
@@ -1518,19 +1504,19 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.refreshLeaderboard = function() {
+        vm.refreshLeaderboard = function () {
             vm.startLoader("Loading Leaderboard Items");
             vm.leaderboard = {};
-            parameters.url = "jobs/" + "challenge_phase_split/" + vm.phaseSplitId + "/leaderboard/?page_size=1000&order_by=" + vm.orderLeaderboardBy;
+            parameters.url = `jobs/challenge/${vm.challengeId}/phase/${vm.phaseSlug}/split/${vm.splitCodename}/leaderboard/?page_size=1000&order_by=${vm.orderLeaderboardBy}`;
             parameters.method = 'GET';
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
                     vm.leaderboard = details.results;
                     vm.startLeaderboard();
                     vm.stopLoader();
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     vm.leaderboard.error = error;
                     vm.stopLoader();
@@ -1540,7 +1526,7 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.toggleShowLeaderboardByLatest = function() {
+        vm.toggleShowLeaderboardByLatest = function () {
             parameters.url = "challenges/challenge/create/challenge_phase_split/" + vm.phaseSplitId + "/";
             parameters.method = "PATCH";
             parameters.data = {
@@ -1551,7 +1537,7 @@
                     vm.selectedPhaseSplit = response.data;
                     vm.getLeaderboard(vm.selectedPhaseSplit.id);
                     vm.sortLeaderboardTextOption = (vm.selectedPhaseSplit.show_leaderboard_by_latest_submission) ?
-                        "Sort by best":"Sort by latest";
+                        "Sort by best" : "Sort by latest";
                 },
                 onError: function (response) {
                     var error = response.data;
@@ -1564,14 +1550,23 @@
         };
 
         // function for getting all submissions on leaderboard public/private
-        vm.getAllEntriesOnPublicLeaderboard = function(phaseSplitId) {
-            vm.stopLeaderboard = function() {
+        vm.getAllEntriesOnPublicLeaderboard = function (phaseSlug, splitCodename) {
+            vm.stopLeaderboard = function () {
                 $interval.cancel(vm.poller);
             };
             vm.stopLeaderboard();
 
             vm.isResult = true;
-            vm.phaseSplitId = phaseSplitId;
+
+            // Find the corresponding phase split object to get its ID
+            var currentPhaseSplit = vm.phaseSplits.find(function (ps) {
+                return ps.challenge_phase_slug === phaseSlug && ps.dataset_split_codename === splitCodename;
+            });
+
+            if (currentPhaseSplit) {
+                vm.phaseSplitId = currentPhaseSplit.id;
+            }
+
             // loader for exisiting teams
             vm.isExistLoader = true;
             vm.loaderTitle = '';
@@ -1581,13 +1576,16 @@
 
             // Show leaderboard
             vm.leaderboard = {};
-            parameters.url = "jobs/" + "phase_split/" + vm.phaseSplitId + "/public_leaderboard_all_entries/?page_size=1000&order_by=" + vm.orderLeaderboardBy;
+            parameters.url = `jobs/challenge/${vm.challengeId}/phase/${phaseSlug}/split/${splitCodename}/public_leaderboard_all_entries/?page_size=1000&order_by=${vm.orderLeaderboardBy}`;
             parameters.method = 'GET';
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
                     vm.leaderboard = details.results;
 
+                    // setting last_submission time
+
+                    // THIS IS THE BLOCK TO REPLACE
                     // setting last_submission time
                     for (var i = 0; i < vm.leaderboard.length; i++) {
                         vm.leaderboard[i]['submission__submitted_at_formatted'] = vm.leaderboard[i]['submission__submitted_at'];
@@ -1595,62 +1593,39 @@
                         var dateTimeNow = moment(new Date());
                         var submissionTime = moment(vm.leaderboard[i].submission__submitted_at);
                         var duration = moment.duration(dateTimeNow.diff(submissionTime));
-                        if (duration._data.years != 0) {
-                            var years = duration.asYears();
-                            vm.leaderboard[i].submission__submitted_at = years;
-                            if (years.toFixed(0) == 1) {
-                                vm.leaderboard[i].timeSpan = 'year';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'years';
-                            }
-                        } else if (duration._data.months != 0) {
-                            var months = duration.months();
-                            vm.leaderboard[i].submission__submitted_at = months;
-                            if (months.toFixed(0) == 1) {
-                                vm.leaderboard[i].timeSpan = 'month';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'months';
-                            }
-                        } else if (duration._data.days != 0) {
-                            var days = duration.asDays();
-                            vm.leaderboard[i].submission__submitted_at = days;
-                            if (days.toFixed(0) == 1) {
-                                vm.leaderboard[i].timeSpan = 'day';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'days';
-                            }
-                        } else if (duration._data.hours != 0) {
-                            var hours = duration.asHours();
-                            vm.leaderboard[i].submission__submitted_at = hours;
-                            if (hours.toFixed(0) == 1) {
-                                vm.leaderboard[i].timeSpan = 'hour';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'hours';
-                            }
-                        } else if (duration._data.minutes != 0) {
-                            var minutes = duration.asMinutes();
-                            vm.leaderboard[i].submission__submitted_at = minutes;
-                            if (minutes.toFixed(0) == 1) {
-                                vm.leaderboard[i].timeSpan = 'minute';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'minutes';
-                            }
-                        } else if (duration._data.seconds != 0) {
-                            var second = duration.asSeconds();
-                            vm.leaderboard[i].submission__submitted_at = second;
-                            if (second.toFixed(0) == 1) {
-                                vm.leaderboard[i].timeSpan = 'second';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'seconds';
-                            }
+                        var timeValue, timeSpan;
+
+                        if (duration.asYears() >= 1) {
+                            timeValue = Math.floor(duration.asYears());
+                            timeSpan = timeValue === 1 ? 'year' : 'years';
+                        } else if (duration.asMonths() >= 1) {
+                            timeValue = Math.floor(duration.asMonths());
+                            timeSpan = timeValue === 1 ? 'month' : 'months';
+                        } else if (duration.asDays() >= 1) {
+                            timeValue = Math.floor(duration.asDays());
+                            timeSpan = timeValue === 1 ? 'day' : 'days';
+                        } else if (duration.asHours() >= 1) {
+                            timeValue = Math.floor(duration.asHours());
+                            timeSpan = timeValue === 1 ? 'hour' : 'hours';
+                        } else if (duration.asMinutes() >= 1) {
+                            timeValue = Math.floor(duration.asMinutes());
+                            timeSpan = timeValue === 1 ? 'minute' : 'minutes';
+                        } else {
+                            timeValue = Math.floor(duration.asSeconds());
+                            timeSpan = timeValue === 1 ? 'second' : 'seconds';
                         }
+
+                        vm.leaderboard[i].submission__submitted_at = timeValue;
+                        vm.leaderboard[i].timeSpan = timeSpan;
+                    }
+                    if (currentPhaseSplit) {
+                        vm.phaseName = currentPhaseSplit.id;
                     }
-                    vm.phaseName = vm.phaseSplitId;
                     vm.startLeaderboard();
                     vm.stopLoader();
                     vm.scrollToEntryAfterLeaderboardLoads();
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     vm.leaderboard.error = error;
                     vm.stopLoader();
@@ -1659,29 +1634,24 @@
 
             utilities.sendRequest(parameters);
         };
-
-        if (vm.phaseSplitId) {
-            vm.getLeaderboard(vm.phaseSplitId);
-        }
         vm.getAllEntries = false;
 
         // function for toggeling between public leaderboard and complete leaderboard [public/private]
-        vm.toggleLeaderboard = function(getAllEntries){
+        vm.toggleLeaderboard = function (getAllEntries) {
             vm.getAllEntries = getAllEntries;
-            if (vm.phaseSplitId) {
-                if (vm.getAllEntries){
+            if (vm.phaseSlug && vm.splitCodename) {
+                if (vm.getAllEntries) {
                     vm.getAllEntriesTestOption = "Exclude private submissions";
-                    vm.getAllEntriesOnPublicLeaderboard(vm.phaseSplitId);
-                }
-                else {
+                    vm.getAllEntriesOnPublicLeaderboard(vm.phaseSlug, vm.splitCodename);
+                } else {
                     vm.getAllEntriesTestOption = "Include private submissions";
-                    vm.getLeaderboard(vm.phaseSplitId);
+                    vm.getLeaderboard(vm.phaseSlug, vm.splitCodename);
                 }
             }
         };
 
         // function to create new team for participating in challenge
-        vm.createNewTeam = function() {
+        vm.createNewTeam = function () {
             vm.isLoader = true;
             vm.loaderTitle = '';
             vm.newContainer = angular.element('.new-team-card');
@@ -1695,7 +1665,7 @@
                 "team_url": vm.team.url
             };
             parameters.callback = {
-                onSuccess: function() {
+                onSuccess: function () {
                     $rootScope.notify("success", "Team " + vm.team.name + " has been created successfully!");
                     vm.team.error = false;
                     vm.stopLoader();
@@ -1705,7 +1675,7 @@
                     parameters.url = 'participants/participant_team';
                     parameters.method = 'GET';
                     parameters.callback = {
-                        onSuccess: function(response) {
+                        onSuccess: function (response) {
                             var status = response.status;
                             var details = response.data;
                             if (status == 200) {
@@ -1733,13 +1703,13 @@
                                 vm.stopLoader();
                             }
                         },
-                        onError: function() {
+                        onError: function () {
                             vm.stopLoader();
                         }
                     };
                     utilities.sendRequest(parameters);
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     vm.team.error = error.team_name[0];
                     vm.stopLoader();
@@ -1750,7 +1720,7 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.setWorkerResources = function() {
+        vm.setWorkerResources = function () {
             parameters.url = "challenges/" + vm.challengeId + "/scale_resources/";
             parameters.method = 'PUT';
             parameters.data = {
@@ -1758,17 +1728,17 @@
                 "worker_memory": vm.selectedWorkerResources[1],
             };
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     $rootScope.notify("success", response.data["Success"]);
                     vm.team.error = false;
                     vm.stopLoader();
                     vm.team = {};
                 },
-                onError: function(response) {
+                onError: function (response) {
                     vm.team.error = true;
                     vm.stopLoader();
                     let requestError = '';
-                    if (typeof(response.data) == 'string') {
+                    if (typeof (response.data) == 'string') {
                         requestError = response.data;
                     } else {
                         requestError = response.data["error"];
@@ -1779,38 +1749,47 @@
 
             utilities.sendRequest(parameters);
         };
+        vm.getAllSubmissionResults = function (phaseSlug) {
 
-        vm.getAllSubmissionResults = function(phaseId) {
-            vm.stopFetchingSubmissions = function() {
+            vm.stopFetchingSubmissions = function () {
                 $interval.cancel(vm.poller);
             };
-
             vm.stopFetchingSubmissions();
+
             vm.isResult = true;
-            if (phaseId !== undefined) {
-                vm.phaseId = phaseId;
+            vm.allSubmissionPhaseSlug = phaseSlug;
+
+
+            var numericPhaseId = null;
+            var all_phases = vm.phases.results;
+            for (var i = 0; i < all_phases.length; i++) {
+                if (all_phases[i].slug === phaseSlug) {
+                    numericPhaseId = all_phases[i].id;
+                    break;
+                }
             }
+            vm.phaseId = numericPhaseId;
 
-            // loader for loading submissions.
+            // Start loading submissions
             vm.startLoader = loaderService.startLoader;
             vm.startLoader("Loading Submissions");
 
-            // get submissions of all the challenge phases
             vm.isNext = '';
             vm.isPrev = '';
             vm.currentPage = '';
             vm.showPagination = false;
+
             if (vm.filter_all_submission_by_team_name === '') {
-                parameters.url = "challenges/" + vm.challengeId + "/challenge_phase/" +
-                vm.phaseId + "/submissions";
+                parameters.url = "challenges/" + vm.challengeId + "/challenge_phase/" + "v2/" +
+                    vm.allSubmissionPhaseSlug + "/submissions";
             } else {
-                parameters.url = "challenges/" + vm.challengeId + "/challenge_phase/" +
-                vm.phaseId + "/submissions?participant_team__team_name=" + vm.filter_all_submission_by_team_name;
+                parameters.url = "challenges/" + vm.challengeId + "/challenge_phase/" + "v2/" +
+                    vm.allSubmissionPhaseSlug + "/submissions?participant_team__team_name=" + vm.filter_all_submission_by_team_name;
             }
             parameters.method = 'GET';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
                     vm.submissionResult = details;
 
@@ -1833,7 +1812,6 @@
                         vm.isNext = 'disabled';
                     } else {
                         vm.isNext = '';
-
                     }
                     if (vm.submissionResult.previous === null) {
                         vm.isPrev = 'disabled';
@@ -1848,24 +1826,15 @@
                         vm.currentRefPage = Math.ceil(vm.currentPage);
                     }
 
-                    vm.load = function(url) {
-                        // loader for loading submissions
+                    vm.load = function (url) {
                         vm.startLoader = loaderService.startLoader;
                         vm.startLoader("Loading Submissions");
                         if (url !== null) {
-
-                            //store the header data in a variable
-                            var headers = {
-                                'Authorization': "Token " + userKey
-                            };
-
-                            //Add headers with in your request
-                            $http.get(url, { headers: headers }).then(function(response) {
-                                // reinitialized data
+                            var headers = { 'Authorization': "Token " + userKey };
+                            $http.get(url, { headers: headers }).then(function (response) {
                                 var details = response.data;
                                 vm.submissionResult = details;
 
-                                // condition for pagination
                                 if (vm.submissionResult.next === null) {
                                     vm.isNext = 'disabled';
                                     vm.currentPage = vm.submissionResult.count / 150;
@@ -1887,9 +1856,10 @@
                             vm.stopLoader();
                         }
                     };
+                    vm.allSubmissionPhaseName = phaseSlug;
                     vm.stopLoader();
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     utilities.storeData('emailError', error.detail);
                     $state.go('web.permission-denied');
@@ -1899,83 +1869,83 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.changeSubmissionVisibility = function(submission_id, submissionVisibility) {
+        vm.changeSubmissionVisibility = function (submission_id, submissionVisibility) {
             parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/submission/" + submission_id;
             parameters.method = 'PATCH';
             parameters.data = {
                 "is_public": submissionVisibility
             };
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var status = response.status;
                     var message = "";
                     if (status === 200) {
-                      var detail = response.data;
-                      if (detail['is_public'] == true) {
-                        message = "The submission is made public.";
-                      }
-                      else {
-                        message = "The submission is made private.";
-                      }
-                      $rootScope.notify("success", message);
-                      if (vm.isCurrentPhaseRestrictedToSelectOneSubmission) {
-                        $mdDialog.hide();
-                        if (vm.previousPublicSubmissionId != submission_id) {
-                            vm.submissionVisibility[vm.previousPublicSubmissionId] = false;
-                            vm.previousPublicSubmissionId = submission_id;
-                        } else {
-                            vm.previousPublicSubmissionId = null;
+                        var detail = response.data;
+                        if (detail['is_public'] == true) {
+                            message = "The submission is made public.";
+                        }
+                        else {
+                            message = "The submission is made private.";
+                        }
+                        $rootScope.notify("success", message);
+                        if (vm.isCurrentPhaseRestrictedToSelectOneSubmission) {
+                            $mdDialog.hide();
+                            if (vm.previousPublicSubmissionId != submission_id) {
+                                vm.submissionVisibility[vm.previousPublicSubmissionId] = false;
+                                vm.previousPublicSubmissionId = submission_id;
+                            } else {
+                                vm.previousPublicSubmissionId = null;
+                            }
+                            vm.submissionVisibility[submission_id] = submissionVisibility;
                         }
-                        vm.submissionVisibility[submission_id] = submissionVisibility;
-                      }
                     }
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     var status = response.status;
                     if (status === 400 || status === 403) {
-                       $rootScope.notify("error", error.error);
+                        $rootScope.notify("error", error.error);
                     }
                     if (vm.isCurrentPhaseRestrictedToSelectOneSubmission) {
-                       $mdDialog.hide();
-                       vm.submissionVisibility[submission_id] = !vm.submissionVisibility[submission_id];
+                        $mdDialog.hide();
+                        vm.submissionVisibility[submission_id] = !vm.submissionVisibility[submission_id];
                     }
                 }
             };
             utilities.sendRequest(parameters);
         };
 
-        vm.activateCollapsible = function() {
+        vm.activateCollapsible = function () {
             angular.element('.collapsible').collapsible();
         };
 
-        vm.team_approval_list = function(){
+        vm.team_approval_list = function () {
             var parameters = {};
             parameters.token = utilities.getData('userKey');
             parameters.url = 'challenges/challenge/' + $stateParams.challengeId + '/get_participant_teams';
             parameters.method = 'GET';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     vm.approved_teams = response.data;
                     vm.activateCollapsible();
                 },
-                onError: function() {
+                onError: function () {
                     $rootScope.notify("error", "Some error occured.Please try again.");
                 }
             };
             utilities.sendRequest(parameters);
         };
 
-        vm.showapprovalparticipantteamDialog = function(challengeId, participant_team_id, approved_status) {
+        vm.showapprovalparticipantteamDialog = function (challengeId, participant_team_id, approved_status) {
             if (approved_status) {
                 vm.dialog = {};
                 vm.dialog.challengeId = challengeId;
                 vm.dialog.participant_team_id = participant_team_id;
                 vm.dialog.approved_status = approved_status;
-                $mdDialog.show({ 
-                    scope: $scope, 
-                    preserveScope: true, 
+                $mdDialog.show({
+                    scope: $scope,
+                    preserveScope: true,
                     templateUrl: 'dist/views/web/challenge/edit-challenge/edit-challenge-approvalConfirm.html',
                 });
             }
@@ -1983,28 +1953,28 @@
                 vm.check_approval_status(challengeId, participant_team_id, approved_status, false);
             }
         };
-        
 
-        vm.check_approval_status = function(challengeId, participant_team_id, approved_status, formvalid){
+
+        vm.check_approval_status = function (challengeId, participant_team_id, approved_status, formvalid) {
             var parameters = {};
             parameters.token = utilities.getData('userKey');
             parameters.method = 'POST';
-            if(approved_status) {
+            if (approved_status) {
                 if (formvalid) {
-                        parameters.url = 'challenges/challenge/' + challengeId + '/approve_participant_team/' + participant_team_id;
-                        parameters.callback = {
-                            onSuccess: function(response) {
-                                if(response.status == 201){
-                                    $rootScope.notify("success", "Participant Team Approved successfully.");
-                                }
-                            },
-                            onError: function(response) {
-                                $rootScope.notify("error", response.data.error);
+                    parameters.url = 'challenges/challenge/' + challengeId + '/approve_participant_team/' + participant_team_id;
+                    parameters.callback = {
+                        onSuccess: function (response) {
+                            if (response.status == 201) {
+                                $rootScope.notify("success", "Participant Team Approved successfully.");
                             }
-                        };
-                        utilities.sendRequest(parameters);
-                        $mdDialog.hide();
-                    }
+                        },
+                        onError: function (response) {
+                            $rootScope.notify("error", response.data.error);
+                        }
+                    };
+                    utilities.sendRequest(parameters);
+                    $mdDialog.hide();
+                }
                 else {
                     $mdDialog.hide();
                     $state.reload();
@@ -2013,12 +1983,12 @@
             else {
                 parameters.url = 'challenges/challenge/' + challengeId + '/disapprove_participant_team/' + participant_team_id;
                 parameters.callback = {
-                    onSuccess: function(response) {
-                        if(response.status == 204){
+                    onSuccess: function (response) {
+                        if (response.status == 204) {
                             $rootScope.notify("success", "Participant Team Disapproved successfully.");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $rootScope.notify("error", response.data.error);
                         $state.reload();
                     }
@@ -2028,21 +1998,21 @@
         };
 
 
-        vm.changeBaselineStatus = function(submission_id) {
+        vm.changeBaselineStatus = function (submission_id) {
             parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/submission/" + submission_id;
             parameters.method = 'PATCH';
             parameters.data = {
                 "is_baseline": vm.baselineStatus[submission_id]
             };
             parameters.callback = {
-                onSuccess: function() {},
-                onError: function() {}
+                onSuccess: function () { },
+                onError: function () { }
             };
 
             utilities.sendRequest(parameters);
         };
 
-        vm.showRemainingSubmissions = function(phaseID) {
+        vm.showRemainingSubmissions = function (phaseID) {
             vm.remainingSubmissions = {};
             vm.remainingTime = {};
             vm.showClock = false;
@@ -2051,11 +2021,11 @@
             parameters.url = "jobs/" + vm.challengeId + "/remaining_submissions/";
             parameters.method = 'GET';
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var status = response.status;
                     for (var phase in response.data.phases) {
                         if (response.data.phases[phase].id == phaseID) {
-                           var details = response.data.phases[phase].limits;
+                            var details = response.data.phases[phase].limits;
                         }
                     }
                     if (status === 200) {
@@ -2072,7 +2042,7 @@
                             vm.message = details;
                             vm.showClock = true;
                             vm.disableSubmit = true;
-                            vm.countDownTimer = function() {
+                            vm.countDownTimer = function () {
                                 vm.remainingTime = vm.message.remaining_time;
                                 vm.days = Math.floor(vm.remainingTime / 24 / 60 / 60);
                                 vm.hoursLeft = Math.floor((vm.remainingTime) - (vm.days * 86400));
@@ -2089,14 +2059,14 @@
                                     vm.remainingSeconds--;
                                 }
                             };
-                            setInterval(function() {
+                            setInterval(function () {
                                 $rootScope.$apply(vm.countDownTimer);
                             }, 1000);
                             vm.countDownTimer();
                         }
                     }
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var details = response.data;
                     vm.stopLoader();
                     $rootScope.notify("error", details.error);
@@ -2109,75 +2079,76 @@
         vm.fields = [{
             'label': 'Team Name',
             'id': 'participant_team'
-        },{
+        }, {
             'label': 'Team Members',
             'id': 'participant_team_members'
-        },{
+        }, {
             'label': 'Team Members Email Id',
             'id': 'participant_team_members_email'
-        },{
+        }, {
             'label': 'Team Members Affiliation',
             'id': 'participant_team_members_affiliation'
-        },{
+        }, {
             'label': 'Challenge Phase',
             'id': 'challenge_phase'
-        },{
+        }, {
             'label': 'Status',
             'id': 'status'
-        },{
+        }, {
             'label': 'Created By',
             'id': 'created_by'
-        },{
+        }, {
             'label': 'Execution Time',
             'id': 'execution_time'
-        },{
+        }, {
             'label': 'Submission Number',
             'id': 'submission_number'
-        },{
+        }, {
             'label': 'Submitted File',
             'id': 'input_file'
-        },{
+        }, {
             'label': 'Stdout File',
             'id': 'stdout_file'
-        },{
+        }, {
             'label': 'Stderr File',
             'id': 'stderr_file'
-        },{
+        }, {
             'label': 'Environment Log File',
             'id': 'environment_log_file'
-        },{
+        }, {
             'label': 'Submitted At',
             'id': 'created_at'
-        },{
+        }, {
             'label': 'Submission Result File',
             'id': 'submission_result_file'
-        },{
+        }, {
             'label': 'Submission Metadata File',
             'id': 'submission_metadata_file'
-        },{
+        }, {
             'label': 'Method Name',
             'id': 'method_name'
-        },{
+        }, {
             'label': 'Method Description',
             'id': 'method_description'
-        },{
+        }, {
             'label': 'Publication URL',
             'id': 'publication_url'
-        },{
+        }, {
             'label': 'Project URL',
             'id': 'project_url'
-        },{
+        }, {
             'label': 'Submission Meta Attributes',
             'id': 'submission_meta_attributes'
         }];
 
-        vm.downloadChallengeSubmissions = function() {
+        vm.downloadChallengeSubmissions = function () {
+            vm.phaseId = (vm.allSubmissionPhaseSlug == undefined) ? vm.mySubmissionPhaseSlug : vm.allSubmissionPhaseSlug;
             if (vm.phaseId) {
-                parameters.url = "challenges/" + vm.challengeId + "/phase/" + vm.phaseId + "/download_all_submissions/" + vm.fileSelected + "/";
+                parameters.url = "challenges/" + vm.challengeId + "/phase/" + "v2/" + vm.phaseId + "/download_all_submissions/" + vm.fileSelected + "/";
                 if (vm.fieldsToGet === undefined || vm.fieldsToGet.length === 0) {
                     parameters.method = "GET";
                     parameters.callback = {
-                        onSuccess: function(response) {
+                        onSuccess: function (response) {
                             var details = response.data;
                             var anchor = angular.element('<a/>');
                             anchor.attr({
@@ -2185,7 +2156,7 @@
                                 download: 'all_submissions.csv'
                             })[0].click();
                         },
-                        onError: function(response) {
+                        onError: function (response) {
                             var details = response.data;
                             $rootScope.notify('error', details.error);
                         }
@@ -2195,14 +2166,14 @@
                 else {
                     parameters.method = "POST";
                     var fieldsExport = [];
-                    for(var i = 0 ; i < vm.fields.length ; i++) {
+                    for (var i = 0; i < vm.fields.length; i++) {
                         if (vm.fieldsToGet.includes(vm.fields[i].id)) {
                             fieldsExport.push(vm.fields[i].id);
                         }
                     }
                     parameters.data = fieldsExport;
                     parameters.callback = {
-                        onSuccess: function(response) {
+                        onSuccess: function (response) {
                             var details = response.data;
                             var anchor = angular.element('<a/>');
                             anchor.attr({
@@ -2210,7 +2181,7 @@
                                 download: 'all_submissions.csv'
                             })[0].click();
                         },
-                        onError: function(response) {
+                        onError: function (response) {
                             var details = response.data;
                             $rootScope.notify('error', details.error);
                         }
@@ -2224,9 +2195,9 @@
         };
 
         vm.isOptionChecked = function (option, attribute) {
-            if(
+            if (
                 attribute.values.findIndex((el) => {
-                    return el===option;
+                    return el === option;
                 }) !== -1
             ) {
                 return true;
@@ -2257,7 +2228,7 @@
             });
         };
 
-        vm.showVisibilityDialog = function(submissionId, submissionVisibility) {
+        vm.showVisibilityDialog = function (submissionId, submissionVisibility) {
             vm.submissionId = submissionId;
             // Show modal only when submission is being made public
             if (submissionVisibility) {
@@ -2272,26 +2243,26 @@
                     vm.changeSubmissionVisibility(submissionId, submissionVisibility);
                 }
             } else {
-                // Case when a submission is made private
+
                 vm.changeSubmissionVisibility(submissionId, submissionVisibility);
             }
         };
 
-        vm.cancelSubmission = function(submissionId) {
+        vm.cancelSubmission = function (submissionId) {
             parameters.url = "jobs/challenges/" + vm.challengeId + "/submissions/" + submissionId + "/update_submission_meta/";
             parameters.method = 'PATCH';
             parameters.data = {
                 "status": "cancelled",
             };
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var status = response.status;
                     if (status === 200) {
                         $mdDialog.hide();
                         $rootScope.notify("success", "Submission cancelled successfully!");
                     }
                 },
-                onError: function(response) {
+                onError: function (response) {
                     $mdDialog.hide();
                     var error = response.data;
                     $rootScope.notify("error", error);
@@ -2301,7 +2272,7 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.showCancelSubmissionDialog = function(submissionId, status) {
+        vm.showCancelSubmissionDialog = function (submissionId, status) {
             if (!vm.allowCancelRunningSubmissions && status != "submitted") {
                 $rootScope.notify("error", "Only unproccessed submissions can be cancelled");
                 return;
@@ -2314,11 +2285,11 @@
             });
         };
 
-        vm.hideDialog = function() {
+        vm.hideDialog = function () {
             $mdDialog.hide();
         };
 
-        vm.updateSubmissionMetaData = function(updateSubmissionMetaDataForm) {
+        vm.updateSubmissionMetaData = function (updateSubmissionMetaDataForm) {
             if (updateSubmissionMetaDataForm) {
                 parameters.url = "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/submission/" + vm.submissionId;
                 parameters.method = 'PATCH';
@@ -2330,17 +2301,17 @@
                     "submission_metadata": vm.currentSubmissionMetaData
                 };
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The data is successfully updated!");
-                            if(vm.currentSubmissionMetaData != null) {
+                            if (vm.currentSubmissionMetaData != null) {
                                 vm.submissionMetaData.submission_metadata = JSON.parse(JSON.stringify(vm.currentSubmissionMetaData));
                             }
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         var error = response.data;
                         $rootScope.notify("error", error);
@@ -2353,20 +2324,20 @@
             }
         };
 
-        vm.verifySubmission = function(submissionId, isVerified) {
+        vm.verifySubmission = function (submissionId, isVerified) {
             parameters.url = "jobs/challenges/" + vm.challengeId + "/submissions/" + submissionId + "/update_submission_meta/";
             parameters.method = 'PATCH';
             parameters.data = {
                 "is_verified_by_host": isVerified,
             };
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var status = response.status;
                     if (status === 200) {
                         $rootScope.notify("success", "Verification status updated successfully!");
                     }
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     $rootScope.notify("error", error);
                 }
@@ -2374,13 +2345,13 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.isStarred = function() {
+        vm.isStarred = function () {
             // Get the stars count and user specific starred or unstarred
             parameters.url = "challenges/" + vm.challengeId + "/";
             parameters.method = 'GET';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
                     vm.count = details['count'] || 0;
                     vm.is_starred = details['is_starred'];
@@ -2390,17 +2361,17 @@
                         vm.caption = 'Unstar';
                     }
                 },
-                onError: function() {}
+                onError: function () { }
             };
             utilities.sendRequest(parameters);
         };
 
-        vm.starChallenge = function() {
+        vm.starChallenge = function () {
             parameters.url = "challenges/" + vm.challengeId + "/";
             parameters.method = 'POST';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var details = response.data;
                     vm.count = details['count'];
                     vm.is_starred = details['is_starred'];
@@ -2410,7 +2381,7 @@
                         vm.caption = 'Star';
                     }
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     $rootScope.notify("error", error);
                 }
@@ -2419,7 +2390,7 @@
         };
 
         // Edit challenge overview
-        vm.overviewDialog = function(ev) {
+        vm.overviewDialog = function (ev) {
             vm.tempDesc = vm.page.description;
             $mdDialog.show({
                 scope: $scope,
@@ -2430,7 +2401,7 @@
             });
         };
 
-        vm.editChallengeOverview = function(editChallengeOverviewForm) {
+        vm.editChallengeOverview = function (editChallengeOverviewForm) {
             if (editChallengeOverviewForm) {
                 var challengeHostList = utilities.getData("challengeCreator");
                 for (var challenge in challengeHostList) {
@@ -2446,14 +2417,14 @@
 
                 };
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The description is successfully updated!");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         vm.page.description = vm.tempDesc;
                         var error = response.data;
@@ -2469,7 +2440,7 @@
         };
 
         // Delete challenge
-        vm.deleteChallengeDialog = function(ev) {
+        vm.deleteChallengeDialog = function (ev) {
             vm.titleInput = "";
             $mdDialog.show({
                 scope: $scope,
@@ -2480,21 +2451,21 @@
             });
         };
 
-        vm.deleteChallenge = function(deleteChallengeForm) {
-            if (deleteChallengeForm){
+        vm.deleteChallenge = function (deleteChallengeForm) {
+            if (deleteChallengeForm) {
                 var parameters = {};
                 parameters.url = "challenges/challenge/" + vm.challengeId + "/disable";
                 parameters.method = 'POST';
                 parameters.token = userKey;
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
-                        if (status === 204){
+                        if (status === 204) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The Challenge is successfully deleted!");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         var error = response.data;
                         $rootScope.notify("error", error);
@@ -2508,7 +2479,7 @@
         };
 
         // Edit submission guidelines
-        vm.submissionGuidelinesDialog = function(ev) {
+        vm.submissionGuidelinesDialog = function (ev) {
             vm.tempSubmissionGuidelines = vm.page.submission_guidelines;
             $mdDialog.show({
                 scope: $scope,
@@ -2519,7 +2490,7 @@
             });
         };
 
-        vm.editSubmissionGuideline = function(editSubmissionGuidelinesForm) {
+        vm.editSubmissionGuideline = function (editSubmissionGuidelinesForm) {
             if (editSubmissionGuidelinesForm) {
                 var challengeHostList = utilities.getData("challengeCreator");
                 for (var challenge in challengeHostList) {
@@ -2535,14 +2506,14 @@
 
                 };
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The submission guidelines is successfully updated!");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         vm.page.submission_guidelines = vm.tempSubmissionGuidelines;
                         var error = response.data;
@@ -2558,7 +2529,7 @@
         };
 
         // Edit Evaluation Criteria
-        vm.evaluationCriteriaDialog = function(ev) {
+        vm.evaluationCriteriaDialog = function (ev) {
             vm.tempEvaluationCriteria = vm.page.evaluation_details;
             $mdDialog.show({
                 scope: $scope,
@@ -2569,7 +2540,7 @@
             });
         };
 
-        vm.editEvaluationCriteria = function(editEvaluationCriteriaForm) {
+        vm.editEvaluationCriteria = function (editEvaluationCriteriaForm) {
             if (editEvaluationCriteriaForm) {
                 var challengeHostList = utilities.getData("challengeCreator");
                 for (var challenge in challengeHostList) {
@@ -2584,14 +2555,14 @@
                     "evaluation_details": vm.page.evaluation_details
                 };
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The evaluation details is successfully updated!");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         vm.page.evaluation_details = vm.tempEvaluationCriteria;
                         var error = response.data;
@@ -2609,7 +2580,7 @@
 
 
         // Edit Evaluation Script
-        vm.evaluationScriptDialog = function(ev) {
+        vm.evaluationScriptDialog = function (ev) {
             vm.tempEvaluationCriteria = vm.page.evaluation_details;
             $mdDialog.show({
                 scope: $scope,
@@ -2620,10 +2591,10 @@
             });
         };
 
-        vm.editEvalScript = function(editEvaluationCriteriaForm) {
+        vm.editEvalScript = function (editEvaluationCriteriaForm) {
             if (editEvaluationCriteriaForm) {
                 if (vm.editEvaluationScript === undefined || vm.editEvaluationScript === null
-                     || vm.editEvaluationScript === "") {
+                    || vm.editEvaluationScript === "") {
                     var error = "Please upload a valid evaluation script!";
                     $mdDialog.hide();
                     $rootScope.notify("error", error);
@@ -2642,14 +2613,14 @@
                 parameters.method = 'PATCH';
                 parameters.data = formData;
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The evaluation script is successfully updated!");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         vm.page.evaluation_details = vm.tempEvaluationCriteria;
                         var error = response.data;
@@ -2667,7 +2638,7 @@
 
 
         // Edit Terms and Conditions
-        vm.termsAndConditionsDialog = function(ev) {
+        vm.termsAndConditionsDialog = function (ev) {
             vm.tempTermsAndConditions = vm.page.terms_and_conditions;
             $mdDialog.show({
                 scope: $scope,
@@ -2678,7 +2649,7 @@
             });
         };
 
-        vm.editTermsAndConditions = function(editTermsAndConditionsForm) {
+        vm.editTermsAndConditions = function (editTermsAndConditionsForm) {
             if (editTermsAndConditionsForm) {
                 var challengeHostList = utilities.getData("challengeCreator");
                 for (var challenge in challengeHostList) {
@@ -2693,14 +2664,14 @@
                     "terms_and_conditions": vm.page.terms_and_conditions
                 };
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The terms and conditions are successfully updated!");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         vm.page.terms_and_conditions = vm.tempTermsAndConditions;
                         var error = response.data;
@@ -2715,7 +2686,7 @@
         };
 
         // Edit Challenge Title
-        vm.challengeTitleDialog = function(ev) {
+        vm.challengeTitleDialog = function (ev) {
             vm.tempChallengeTitle = vm.page.title;
             $mdDialog.show({
                 scope: $scope,
@@ -2726,7 +2697,7 @@
             });
         };
 
-        vm.editChallengeTitle = function(editChallengeTitleForm) {
+        vm.editChallengeTitle = function (editChallengeTitleForm) {
             if (editChallengeTitleForm) {
                 var challengeHostList = utilities.getData("challengeCreator");
                 for (var challenge in challengeHostList) {
@@ -2741,14 +2712,14 @@
                     "title": vm.page.title
                 };
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The challenge title is  successfully updated!");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         vm.page.title = vm.tempChallengeTitle;
                         var error = response.data;
@@ -2762,7 +2733,7 @@
             }
         };
 
-        vm.challengePhaseDialog = function(ev, phase) {
+        vm.challengePhaseDialog = function (ev, phase) {
             vm.page.challenge_phase = phase;
             vm.page.max_submissions_per_day = phase.max_submissions_per_day;
             vm.page.max_submissions_per_month = phase.max_submissions_per_month;
@@ -2780,7 +2751,7 @@
             });
         };
 
-        vm.editChallengePhase = function(editChallengePhaseForm) {
+        vm.editChallengePhase = function (editChallengePhaseForm) {
             if (editChallengePhaseForm) {
                 vm.challengePhaseId = vm.page.challenge_phase.id;
                 parameters.url = "challenges/challenge/" + vm.challengeId + "/challenge_phase/" + vm.challengePhaseId;
@@ -2793,13 +2764,13 @@
                 formData.append("max_submissions_per_day", vm.page.challenge_phase.max_submissions_per_day);
                 formData.append("max_submissions_per_month", vm.page.challenge_phase.max_submissions_per_month);
                 formData.append("max_submissions", vm.page.challenge_phase.max_submissions);
-                formData.append("max_concurrent_submissions_allowed", vm.page.challenge_phase.max_concurrent_submissions_allowed); 
+                formData.append("max_concurrent_submissions_allowed", vm.page.challenge_phase.max_concurrent_submissions_allowed);
                 if (vm.testAnnotationFile) {
                     formData.append("test_annotation", vm.testAnnotationFile);
                 }
                 parameters.data = formData;
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         utilities.hideLoader();
                         if (status === 200) {
@@ -2807,7 +2778,7 @@
                             $rootScope.notify("success", "The challenge phase details are successfully updated!");
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         utilities.hideLoader();
                         $mdDialog.hide();
                         var error = response.data;
@@ -2821,12 +2792,12 @@
                 parameters.method = 'GET';
                 parameters.data = {};
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var details = response.data;
                         vm.phases = details;
                         utilities.hideLoader();
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         var error = response.data;
                         utilities.storeData('emailError', error.detail);
                         $state.go('web.permission-denied');
@@ -2838,7 +2809,7 @@
             }
         };
 
-        vm.publishChallenge = function(ev) {
+        vm.publishChallenge = function (ev) {
             ev.stopPropagation();
             vm.toggleChallengeState = null;
             vm.publishDesc = null;
@@ -2848,13 +2819,13 @@
                 vm.toggleChallengeState = "public";
 
             var confirm = $mdDialog.confirm()
-                          .title('Make this challenge ' + vm.toggleChallengeState + '?')
-                          .ariaLabel('')
-                          .targetEvent(ev)
-                          .ok('Yes')
-                          .cancel('No');
+                .title('Make this challenge ' + vm.toggleChallengeState + '?')
+                .ariaLabel('')
+                .targetEvent(ev)
+                .ok('Yes')
+                .cancel('No');
 
-            $mdDialog.show(confirm).then(function() {
+            $mdDialog.show(confirm).then(function () {
                 parameters.url = "challenges/challenge_host_team/" + vm.page.creator.id + "/challenge/" + vm.page.id;
                 parameters.method = 'PATCH';
                 parameters.data = {
@@ -2862,14 +2833,14 @@
                 };
                 vm.isPublished = !vm.isPublished;
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $mdDialog.hide();
                             $rootScope.notify("success", "The challenge was successfully made " + vm.toggleChallengeState);
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $mdDialog.hide();
                         vm.page.description = vm.tempDesc;
                         var error = response.data;
@@ -2878,13 +2849,13 @@
                 };
 
                 utilities.sendRequest(parameters);
-            }, function() {
-            // Nope
+            }, function () {
+                // Nope
             });
         };
 
         // Edit Challenge Start and End Date
-        vm.challengeDateDialog = function(ev) {
+        vm.challengeDateDialog = function (ev) {
             vm.challengeStartDate = moment(vm.page.start_date);
             vm.challengeEndDate = moment(vm.page.end_date);
             $mdDialog.show({
@@ -2896,7 +2867,7 @@
             });
         };
 
-        vm.editChallengeDate = function(editChallengeDateForm) {
+        vm.editChallengeDate = function (editChallengeDateForm) {
             if (editChallengeDateForm) {
                 var challengeHostList = utilities.getData("challengeCreator");
                 for (var challenge in challengeHostList) {
@@ -2913,7 +2884,7 @@
                         "end_date": vm.challengeEndDate
                     };
                     parameters.callback = {
-                        onSuccess: function(response) {
+                        onSuccess: function (response) {
                             var status = response.status;
                             utilities.hideLoader();
                             if (status === 200) {
@@ -2923,7 +2894,7 @@
                                 $rootScope.notify("success", "The challenge start and end date is successfully updated!");
                             }
                         },
-                        onError: function(response) {
+                        onError: function (response) {
                             utilities.hideLoader();
                             $mdDialog.hide();
                             var error = response.data;
@@ -2940,7 +2911,7 @@
             }
         };
 
-        vm.editchallengeTagDialog = function(ev) {
+        vm.editchallengeTagDialog = function (ev) {
             vm.tags = vm.page.list_tags;
             vm.domain_choices();
             $mdDialog.show({
@@ -2952,7 +2923,7 @@
             });
         };
 
-        vm.editChallengeTag = function(editChallengeTagDomainForm) {
+        vm.editChallengeTag = function (editChallengeTagDomainForm) {
             var new_tags;
             if (!editChallengeTagDomainForm) {
                 $mdDialog.hide();
@@ -2973,7 +2944,7 @@
                 "domain": vm.domain
             };
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var status = response.status;
                     utilities.hideLoader();
                     if (status === 200) {
@@ -2982,7 +2953,7 @@
                         $mdDialog.hide();
                     }
                 },
-                onError: function(response) {
+                onError: function (response) {
                     utilities.hideLoader();
                     $mdDialog.hide();
                     var error = response.data;
@@ -2993,12 +2964,12 @@
             utilities.sendRequest(parameters);
         };
 
-        vm.domain_choices = function() {
+        vm.domain_choices = function () {
             parameters.url = "challenges/challenge/get_domain_choices/";
             parameters.method = 'GET';
             parameters.data = {};
             parameters.callback = {
-                onSuccess: function(response) {
+                onSuccess: function (response) {
                     var domain_choices = response.data;
                     for (var i = 0; i < domain_choices.length; i++) {
                         if (domain_choices[i][0] == vm.page.domain) {
@@ -3007,7 +2978,7 @@
                     }
                     vm.domainoptions = domain_choices;
                 },
-                onError: function(response) {
+                onError: function (response) {
                     var error = response.data;
                     $rootScope.notify("error", error);
                 }
@@ -3015,20 +2986,20 @@
             utilities.sendRequest(parameters);
         };
 
-        $scope.$on('$destroy', function() {
+        $scope.$on('$destroy', function () {
             vm.stopFetchingSubmissions();
             vm.stopLeaderboard();
             vm.stopLoadingLogs();
         });
 
-        $rootScope.$on('$stateChangeStart', function() {
+        $rootScope.$on('$stateChangeStart', function () {
             vm.phase = {};
             vm.isResult = false;
             vm.stopFetchingSubmissions();
             vm.stopLeaderboard();
         });
 
-        vm.showConfirmation = function(message){
+        vm.showConfirmation = function (message) {
             $rootScope.notify("success", message);
         };
 
@@ -3053,11 +3024,11 @@
             }
         };
 
-        vm.encodeMetricURI = function(metric) {
+        vm.encodeMetricURI = function (metric) {
             return encodeURIComponent(metric);
         };
 
-        vm.deregisterdialog = function(ev) {
+        vm.deregisterdialog = function (ev) {
             $mdDialog.show({
                 scope: $scope,
                 preserveScope: true,
@@ -3067,36 +3038,36 @@
             });
         };
 
-        vm.deregister = function(deregisterformvalid) {
+        vm.deregister = function (deregisterformvalid) {
             if (deregisterformvalid) {
                 parameters.url = 'challenges/challenge/' + vm.challengeId + '/deregister/';
                 parameters.method = 'POST';
                 parameters.data = {};
                 parameters.callback = {
-                    onSuccess: function(response) {
+                    onSuccess: function (response) {
                         var status = response.status;
                         if (status === 200) {
                             $rootScope.notify("success", "You have successfully deregistered from the challenge.");
                             $mdDialog.hide();
                             $state.go('web.challenge-main.challenge-page.overview');
-                            setTimeout(function() {
-                            $state.reload();
+                            setTimeout(function () {
+                                $state.reload();
                             }, 100);
                         }
                     },
-                    onError: function(response) {
+                    onError: function (response) {
                         $rootScope.notify("error", response.data.error);
                         $mdDialog.hide();
                     }
                 };
-            utilities.sendRequest(parameters);
+                utilities.sendRequest(parameters);
             }
             else {
                 $mdDialog.hide();
             }
         };
 
-        vm.openLeaderboardDropdown = function() {
+        vm.openLeaderboardDropdown = function () {
             if (vm.chosenMetrics == undefined) {
                 var index = [];
                 for (var k = 0; k < vm.leaderboard[0].leaderboard__schema.labels.length; k++) {
@@ -3108,18 +3079,18 @@
             vm.leaderboardDropdown = !vm.leaderboardDropdown;
         };
 
-        vm.getTrophySize = function(rank) {
+        vm.getTrophySize = function (rank) {
             switch (rank) {
                 case 1:
-                  return 'trophy-gold';
+                    return 'trophy-gold';
                 case 2:
-                  return 'trophy-silver';
+                    return 'trophy-silver';
                 case 3:
-                  return 'trophy-bronze';
+                    return 'trophy-bronze';
                 // Add more cases for other ranks if needed
                 default:
-                  return 'trophy-black'; // Default size, change this according to your preference
-              }
+                    return 'trophy-black'; // Default size, change this according to your preference
+            }
         };
 
     }
diff --git a/frontend/src/js/controllers/featuredChallengeCtrl.js b/frontend/src/js/controllers/featuredChallengeCtrl.js
index 2f74cad87e..892f03a28c 100644
--- a/frontend/src/js/controllers/featuredChallengeCtrl.js
+++ b/frontend/src/js/controllers/featuredChallengeCtrl.js
@@ -142,23 +142,15 @@
                                 vm.leaderboard[i].timeSpan= 'years';
                             }
                         }
-                        else if (duration._data.months !=0) {
-                            var months = duration.months();
+                        else if (duration._data.months != 0 && duration.asDays() >= 60) {
+                            var months = duration.asMonths();
                             vm.leaderboard[i].submission__submitted_at = months;
-                            if (months.toFixed(0)==1) {
-                                vm.leaderboard[i].timeSpan = 'month';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'months';
-                            }
+                            vm.leaderboard[i].timeSpan = months.toFixed(0) == 1 ? 'month' : 'months';
                         }
-                        else if (duration._data.days !=0) {
+                        else if (duration.asDays() >= 1) {
                             var days = duration.asDays();
                             vm.leaderboard[i].submission__submitted_at = days;
-                            if (days.toFixed(0)==1) {
-                                vm.leaderboard[i].timeSpan = 'day';
-                            } else {
-                                vm.leaderboard[i].timeSpan = 'days';
-                            }
+                            vm.leaderboard[i].timeSpan = days.toFixed(0) == 1 ? 'day' : 'days';
                         }
                         else if (duration._data.hours !=0) {
                             var hours = duration.asHours();
diff --git a/frontend/src/js/route-config/route-config.js b/frontend/src/js/route-config/route-config.js
index cc678f2c82..e00b40347d 100644
--- a/frontend/src/js/route-config/route-config.js
+++ b/frontend/src/js/route-config/route-config.js
@@ -4,597 +4,628 @@
 
 (function () {
     'use strict';
-    angular
-        .module('evalai')
-        .config(configure);
 
-    var baseUrl = "dist/views";
+    angular.module('evalai').config(configure);
 
-    configure.$inject = ['$stateProvider', '$urlRouterProvider', '$locationProvider', '$urlMatcherFactoryProvider'];
+    var baseUrl = 'dist/views';
 
-    function configure($stateProvider, $urlRouterProvider, $locationProvider, $urlMatcherFactoryProvider) {
+    configure.$inject = [
+        '$stateProvider',
+        '$urlRouterProvider',
+        '$locationProvider',
+        '$urlMatcherFactoryProvider',
+    ];
 
+    function configure(
+        $stateProvider,
+        $urlRouterProvider,
+        $locationProvider,
+        $urlMatcherFactoryProvider
+    ) {
         //in order to prevent 404 for trailing '/' in urls
         $urlMatcherFactoryProvider.strictMode(false);
 
         // formating hashed url
         $locationProvider.html5Mode({
             enabled: true,
-            requireBase: true
+            requireBase: true,
         });
 
         // Index url definition
         var home = {
-            name: "home",
-            url: "/",
-            templateUrl: baseUrl + "/web/landing.html",
+            name: 'home',
+            url: '/',
+            templateUrl: baseUrl + '/web/landing.html',
             controller: 'MainCtrl',
             controllerAs: 'main',
-            title: "Welcome"
+            title: 'Welcome',
         };
 
         // Auth related urls
         var auth = {
-            name: "auth",
-            url: "/auth",
-            templateUrl: baseUrl + "/web/auth/auth.html",
+            name: 'auth',
+            url: '/auth',
+            templateUrl: baseUrl + '/web/auth/auth.html',
             controller: 'AuthCtrl',
             controllerAs: 'auth',
             abstract: true,
-            title: 'Auth'
+            title: 'Auth',
         };
 
         var login = {
-            name: "auth.login",
-            parent: "auth",
-            url: "/login",
-            templateUrl: baseUrl + "/web/auth/login.html",
+            name: 'auth.login',
+            parent: 'auth',
+            url: '/login',
+            templateUrl: baseUrl + '/web/auth/login.html',
             title: 'Login',
-            authpage: true
+            authpage: true,
         };
 
         var signup = {
-            name: "auth.signup",
-            parent: "auth",
-            url: "/signup",
-            templateUrl: baseUrl + "/web/auth/signup.html",
+            name: 'auth.signup',
+            parent: 'auth',
+            url: '/signup',
+            templateUrl: baseUrl + '/web/auth/signup.html',
             title: 'SignUp',
-            authpage: true
+            authpage: true,
         };
 
         var verify_email = {
-            name: "auth.verify-email",
-            parent: "auth",
-            url: "/api/auth/registration/account-confirm-email/:email_conf_key",
-            templateUrl: baseUrl + "/web/auth/verify-email.html",
-            title: "Email Verify",
-            authpage: true
+            name: 'auth.verify-email',
+            parent: 'auth',
+            url: '/api/auth/registration/account-confirm-email/:email_conf_key',
+            templateUrl: baseUrl + '/web/auth/verify-email.html',
+            title: 'Email Verify',
+            authpage: true,
         };
 
         var reset_password = {
-            name: "auth.reset-password",
-            parent: "auth",
-            url: "/reset-password",
-            templateUrl: baseUrl + "/web/auth/reset-password.html",
-            title: "Reset Password",
-            authpage: true
+            name: 'auth.reset-password',
+            parent: 'auth',
+            url: '/reset-password',
+            templateUrl: baseUrl + '/web/auth/reset-password.html',
+            title: 'Reset Password',
+            authpage: true,
         };
 
         var reset_password_confirm = {
-            name: "auth.reset-password-confirm",
-            parent: "auth",
-            url: "/api/password/reset/confirm/:user_id/:reset_token",
-            templateUrl: baseUrl + "/web/auth/reset-password-confirm.html",
-            title: "Reset Password Confirm",
-            authpage: true
+            name: 'auth.reset-password-confirm',
+            parent: 'auth',
+            url: '/api/password/reset/confirm/:user_id/:reset_token',
+            templateUrl: baseUrl + '/web/auth/reset-password-confirm.html',
+            title: 'Reset Password Confirm',
+            authpage: true,
         };
 
         var logout = {
-            name: "auth.logout",
-            parent: "auth",
-            url: "/logout",
+            name: 'auth.logout',
+            parent: 'auth',
+            url: '/logout',
             authenticate: true,
-            title: 'Logout'
+            title: 'Logout',
         };
 
         // main app 'web'
         var web = {
-            name: "web",
-            url: "/web",
-            templateUrl: baseUrl + "/web/web.html",
+            name: 'web',
+            url: '/web',
+            templateUrl: baseUrl + '/web/web.html',
             controller: 'WebCtrl',
             controllerAs: 'web',
-            abstract: true
+            abstract: true,
         };
 
         var dashboard = {
-            name: "web.dashboard",
-            parent: "web",
-            url: "/dashboard",
-            templateUrl: baseUrl + "/web/dashboard.html",
+            name: 'web.dashboard',
+            parent: 'web',
+            url: '/dashboard',
+            templateUrl: baseUrl + '/web/dashboard.html',
             controller: 'DashCtrl',
             controllerAs: 'dash',
             title: 'Dashboard',
-            authenticate: true
+            authenticate: true,
         };
 
         var teams = {
-            name: "web.teams",
-            parent: "web",
-            url: "/teams",
-            templateUrl: baseUrl + "/web/teams.html",
+            name: 'web.teams',
+            parent: 'web',
+            url: '/teams',
+            templateUrl: baseUrl + '/web/teams.html',
             controller: 'TeamsCtrl',
             controllerAs: 'teams',
             title: 'Participating Teams',
-            authenticate: true
+            authenticate: true,
         };
 
         var hosted_challenges = {
-            name: "web.hosted-challenge",
-            parent: "web",
-            url: "/hosted-challenges",
-            templateUrl: baseUrl + "/web/hosted-challenges.html",
+            name: 'web.hosted-challenge',
+            parent: 'web',
+            url: '/hosted-challenges',
+            templateUrl: baseUrl + '/web/hosted-challenges.html',
             controller: 'HostedChallengesCtrl',
             controllerAs: 'hostedChallenges',
             title: 'Hosted Challenges',
-            authenticate: true
+            authenticate: true,
         };
 
         var host_analytics = {
-            name: "web.host-analytics",
-            parent: "web",
-            url: "/host-analytics",
-            templateUrl: baseUrl + "/web/analytics/host-analytics.html",
+            name: 'web.host-analytics',
+            parent: 'web',
+            url: '/host-analytics',
+            templateUrl: baseUrl + '/web/analytics/host-analytics.html',
             controller: 'AnalyticsCtrl',
             controllerAs: 'analytics',
             title: 'Host Challenge Analytics',
-            authenticate: true
+            authenticate: true,
         };
 
         var challenge_host_teams = {
-            name: "web.challenge-host-teams",
-            parent: "web",
-            url: "/challenge-host-teams",
-            templateUrl: baseUrl + "/web/challenge-host-teams.html",
+            name: 'web.challenge-host-teams',
+            parent: 'web',
+            url: '/challenge-host-teams',
+            templateUrl: baseUrl + '/web/challenge-host-teams.html',
             controller: 'ChallengeHostTeamsCtrl',
             controllerAs: 'challengeHostTeams',
             title: 'Host Teams',
-            authenticate: true
+            authenticate: true,
         };
 
         var challenge_create = {
-            name: "web.challenge-create",
-            parent: "web",
-            url: "/challenge-create",
-            templateUrl: baseUrl + "/web/challenge-create.html",
+            name: 'web.challenge-create',
+            parent: 'web',
+            url: '/challenge-create',
+            templateUrl: baseUrl + '/web/challenge-create.html',
             title: 'Create Challenge',
             controller: 'ChallengeCreateCtrl',
             controllerAs: 'challengeCreate',
-            authenticate: true
+            authenticate: true,
         };
 
         var challenge_main = {
-            name: "web.challenge-main",
-            parent: "web",
-            url: "/challenges",
-            templateUrl: baseUrl + "/web/challenge-main.html",
-            redirectTo: "web.challenge-main.challenge-list",
+            name: 'web.challenge-main',
+            parent: 'web',
+            url: '/challenges',
+            templateUrl: baseUrl + '/web/challenge-main.html',
+            redirectTo: 'web.challenge-main.challenge-list',
         };
 
         var challenge_list = {
-            name: "web.challenge-main.challenge-list",
-            parent: "web.challenge-main",
-            url: "/list",
-            templateUrl: baseUrl + "/web/challenge-list.html",
+            name: 'web.challenge-main.challenge-list',
+            parent: 'web.challenge-main',
+            url: '/list',
+            templateUrl: baseUrl + '/web/challenge-list.html',
             controller: 'ChallengeListCtrl',
             controllerAs: 'challengeList',
             title: 'Challenges',
         };
 
         var challenge_page = {
-            name: "web.challenge-main.challenge-page",
-            parent: "web.challenge-main",
-            url: "/challenge-page/:challengeId",
-            templateUrl: baseUrl + "/web/challenge/challenge-page.html",
+            name: 'web.challenge-main.challenge-page',
+            parent: 'web.challenge-main',
+            url: '/challenge-page/:challengeId',
+            templateUrl: baseUrl + '/web/challenge/challenge-page.html',
             controller: 'ChallengeCtrl',
             controllerAs: 'challenge',
-            redirectTo: "web.challenge-main.challenge-page.overview",
+            redirectTo: 'web.challenge-main.challenge-page.overview',
         };
 
         var overview = {
-            name: "web.challenge-main.challenge-page.overview",
-            parent: "web.challenge-main.challenge-page",
-            url: "/overview",
-            templateUrl: baseUrl + "/web/challenge/overview.html",
+            name: 'web.challenge-main.challenge-page.overview',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/overview',
+            templateUrl: baseUrl + '/web/challenge/overview.html',
             title: 'Overview',
         };
 
         var evaluation = {
-            name: "web.challenge-main.challenge-page.evaluation",
-            parent: "web.challenge-main.challenge-page",
-            url: "/evaluation",
-            templateUrl: baseUrl + "/web/challenge/evaluation.html",
+            name: 'web.challenge-main.challenge-page.evaluation',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/evaluation',
+            templateUrl: baseUrl + '/web/challenge/evaluation.html',
             title: 'Evaluation',
         };
 
         var phases = {
-            name: "web.challenge-main.challenge-page.phases",
-            parent: "web.challenge-main.challenge-page",
-            url: "/phases",
-            templateUrl: baseUrl + "/web/challenge/phases.html",
+            name: 'web.challenge-main.challenge-page.phases',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/phases',
+            templateUrl: baseUrl + '/web/challenge/phases.html',
             title: 'Phases',
         };
 
         var participate = {
-            name: "web.challenge-main.challenge-page.participate",
-            parent: "web.challenge-main.challenge-page",
-            url: "/participate",
-            templateUrl: baseUrl + "/web/challenge/participate.html",
+            name: 'web.challenge-main.challenge-page.participate',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/participate',
+            templateUrl: baseUrl + '/web/challenge/participate.html',
             title: 'Participate',
         };
 
         var submission = {
-            name: "web.challenge-main.challenge-page.submission",
-            parent: "web.challenge-main.challenge-page",
-            url: "/submission",
-            templateUrl: baseUrl + "/web/challenge/submission.html",
+            name: 'web.challenge-main.challenge-page.submission',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/submission',
+            templateUrl: baseUrl + '/web/challenge/submission.html',
             title: 'Submit',
             authenticate: true,
             resolve: {
-                challenge: function(utilities, $state, $stateParams) {
-                  return new Promise(function(resolve) {
-                    var parameters = {};
-                    parameters.token = utilities.getData('userKey');
-                    parameters.url = 'challenges/' + $stateParams.challengeId + '/participant_team/team_detail';
-                    parameters.method = 'GET';
-                    parameters.data = {};
-                    parameters.callback = {
-                        onSuccess: function(response) {
-                            var details = response.data;
-                            resolve(details);
-                        },
-                      onError: function() {
-                        $state.go('error-404');
-                      }
-                    };
-                    utilities.sendRequest(parameters);
-                  });
-                }
-              },
+                challenge: function (utilities, $state, $stateParams) {
+                    return new Promise(function (resolve) {
+                        var parameters = {};
+                        parameters.token = utilities.getData('userKey');
+                        parameters.url =
+                            'challenges/' + $stateParams.challengeId + '/participant_team/team_detail';
+                        parameters.method = 'GET';
+                        parameters.data = {};
+                        parameters.callback = {
+                            onSuccess: function (response) {
+                                var details = response.data;
+                                resolve(details);
+                            },
+                            onError: function () {
+                                $state.go('error-404');
+                            },
+                        };
+                        utilities.sendRequest(parameters);
+                    });
+                },
+            },
         };
 
         var my_submission = {
-            name: "web.challenge-main.challenge-page.my-submission",
-            parent: "web.challenge-main.challenge-page",
-            url: "/my-submission",
-            templateUrl: baseUrl + "/web/challenge/my-submission.html",
+            name: 'web.challenge-main.challenge-page.my-submission',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/my-submission',
+            templateUrl: baseUrl + '/web/challenge/my-submission.html',
             title: 'My Submissions',
-            authenticate: true
+            authenticate: true,
+        };
+
+        var my_phase_submission = {
+            name: 'web.challenge-main.challenge-page.my-phase-submission',
+            url: '/my-submission/:mySubmissionPhaseSlug',
+            controller: 'ChallengeCtrl',
+            controllerAs: 'challenge',
+            templateUrl: baseUrl + '/web/challenge/my-submission.html',
+            title: 'My Submissions',
+            authenticate: true,
         };
 
         var my_challenge_all_submission = {
-            name: "web.challenge-main.challenge-page.my-challenge-all-submission",
-            parent: "web.challenge-main.challenge-page",
-            url: "/my-challenge-all-submission",
-            templateUrl: baseUrl + "/web/challenge/my-challenge-all-submission.html",
+            name: 'web.challenge-main.challenge-page.my-challenge-all-submission',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/my-challenge-all-submission',
+            templateUrl: baseUrl + '/web/challenge/my-challenge-all-submission.html',
             title: 'My Challenge All Submissions',
             authenticate: true,
             resolve: {
-              challenge: function(utilities, $state, $stateParams) {
-                return new Promise(function(resolve, reject) {
-                  var parameters = {};
-                  parameters.token = utilities.getData('userKey');
-                  parameters.url = 'participants/participant_teams/challenges/' + $stateParams.challengeId + '/user';
-                  parameters.method = 'GET';
-                  parameters.data = {};
-                  parameters.callback = {
-                    onSuccess: function(response) {
-                      var details = response.data;
-                      if (details.is_challenge_host) {
-                        resolve(details);
-                      } else {
-                        $state.go('error-404');
-                        reject();
-                      }
-                    },
-                    onError: function() {
-                      reject();
-                    }
-                  };
-                  utilities.sendRequest(parameters);
-                });
-              }
+                challenge: function (utilities, $state, $stateParams) {
+                    return new Promise(function (resolve, reject) {
+                        var parameters = {};
+                        parameters.token = utilities.getData('userKey');
+                        parameters.url =
+                            'participants/participant_teams/challenges/' + $stateParams.challengeId + '/user';
+                        parameters.method = 'GET';
+                        parameters.data = {};
+                        parameters.callback = {
+                            onSuccess: function (response) {
+                                var details = response.data;
+                                if (details.is_challenge_host) {
+                                    resolve(details);
+                                } else {
+                                    $state.go('error-404');
+                                    reject();
+                                }
+                            },
+                            onError: function () {
+                                reject();
+                            },
+                        };
+                        utilities.sendRequest(parameters);
+                    });
+                },
             },
-        }; 
+        };
+
+        var my_challenge_phase_all_submission = {
+            name: 'web.challenge-main.challenge-page.my-challenge-phase-all-submission',
+            url: '/my-challenge-all-submission/:allSubmissionPhaseSlug',
+            controller: 'ChallengeCtrl',
+            controllerAs: 'challenge',
+            templateUrl: baseUrl + '/web/challenge/my-challenge-all-submission.html',
+            title: 'My Challenge All Submissions',
+            authenticate: true,
+        };
 
         var approval_team = {
-            name: "web.challenge-main.challenge-page.approval_team",
-            parent: "web.challenge-main.challenge-page",
-            url: "/approval_team",
-            templateUrl: baseUrl + "/web/challenge/approval-team.html",
+            name: 'web.challenge-main.challenge-page.approval_team',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/approval_team',
+            templateUrl: baseUrl + '/web/challenge/approval-team.html',
             title: 'My Challenge Approved Teams',
             authenticate: true,
-            
         };
 
         var leaderboard = {
-            name: "web.challenge-main.challenge-page.leaderboard",
-            parent: "web.challenge-main.challenge-page",
-            url: "/leaderboard",
-            templateUrl: baseUrl + "/web/challenge/leaderboard.html",
+            name: 'web.challenge-main.challenge-page.leaderboard',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/leaderboard',
+            templateUrl: baseUrl + '/web/challenge/leaderboard.html',
             title: 'Leaderboard',
         };
 
         var prizes = {
-            name: "web.challenge-main.challenge-page.prizes",
-            parent: "web.challenge-main.challenge-page",
-            url: "/prizes",
-            templateUrl: baseUrl + "/web/challenge/prizes.html",
+            name: 'web.challenge-main.challenge-page.prizes',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/prizes',
+            templateUrl: baseUrl + '/web/challenge/prizes.html',
             title: 'Prizes',
         };
 
         var sponsors = {
-            name: "web.challenge-main.challenge-page.sponsors",
-            parent: "web.challenge-main.challenge-page",
-            url: "/sponsors",
-            templateUrl: baseUrl + "/web/challenge/sponsors.html",
+            name: 'web.challenge-main.challenge-page.sponsors',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/sponsors',
+            templateUrl: baseUrl + '/web/challenge/sponsors.html',
             title: 'Sponsors',
         };
 
         var manage = {
-            name: "web.challenge-main.challenge-page.manage",
-            parent: "web.challenge-main.challenge-page",
-            url: "/manage",
-            templateUrl: baseUrl + "/web/challenge/manage.html",
+            name: 'web.challenge-main.challenge-page.manage',
+            parent: 'web.challenge-main.challenge-page',
+            url: '/manage',
+            templateUrl: baseUrl + '/web/challenge/manage.html',
             controller: 'ChallengeCtrl',
             controllerAs: 'challenge',
             authenticate: true,
             resolve: {
-              challenge: function(utilities, $state, $stateParams) {
-                return new Promise(function(resolve, reject) {
-                  var parameters = {};
-                  parameters.token = utilities.getData('userKey');
-                  parameters.url = 'participants/participant_teams/challenges/' + $stateParams.challengeId + '/user';
-                  parameters.method = 'GET';
-                  parameters.data = {};
-                  parameters.callback = {
-                    onSuccess: function(response) {
-                      var details = response.data;
-                      if (details.is_challenge_host) {
-                        resolve(details);
-                      } else {
-                        $state.go('error-404');
-                        reject();
-                      }
-                    },
-                    onError: function() {
-                      reject();
-                    }
-                  };
-                  utilities.sendRequest(parameters);
-                });
-              }
+                challenge: function (utilities, $state, $stateParams) {
+                    return new Promise(function (resolve, reject) {
+                        var parameters = {};
+                        parameters.token = utilities.getData('userKey');
+                        parameters.url =
+                            'participants/participant_teams/challenges/' + $stateParams.challengeId + '/user';
+                        parameters.method = 'GET';
+                        parameters.data = {};
+                        parameters.callback = {
+                            onSuccess: function (response) {
+                                var details = response.data;
+                                if (details.is_challenge_host) {
+                                    resolve(details);
+                                } else {
+                                    $state.go('error-404');
+                                    reject();
+                                }
+                            },
+                            onError: function () {
+                                reject();
+                            },
+                        };
+                        utilities.sendRequest(parameters);
+                    });
+                },
             },
-        }; 
+        };
 
         var challenge_phase_leaderboard = {
-            name: "web.challenge-main.challenge-page.phase-leaderboard",
-            url: "/leaderboard/:phaseSplitId",
+            name: 'web.challenge-main.challenge-page.phase-leaderboard',
+            url: '/leaderboard/:phaseSlug/:splitCodename', // Changed URL
             controller: 'ChallengeCtrl',
             controllerAs: 'challenge',
-            templateUrl: baseUrl + "/web/challenge/leaderboard.html",
-            title: 'Leaderboard'
+            templateUrl: baseUrl + '/web/challenge/leaderboard.html',
+            title: 'Leaderboard',
         };
 
         var challenge_phase_metric_leaderboard = {
-            name: "web.challenge-main.challenge-page.phase-metric-leaderboard",
-            url: "/leaderboard/:phaseSplitId/:metric",
+            name: 'web.challenge-main.challenge-page.phase-metric-leaderboard',
+            url: '/leaderboard/:phaseSlug/:splitCodename/:metric', // Changed URL
             controller: 'ChallengeCtrl',
             controllerAs: 'challenge',
-            templateUrl: baseUrl + "/web/challenge/leaderboard.html",
-            title: 'Leaderboard'
+            templateUrl: baseUrl + '/web/challenge/leaderboard.html',
+            title: 'Leaderboard',
         };
+        
 
         var profile = {
-            name: "web.profile",
-            parent: "web",
-            url: "/profile",
-            templateUrl: baseUrl + "/web/profile/profile.html",
-            title: "Profile",
+            name: 'web.profile',
+            parent: 'web',
+            url: '/profile',
+            templateUrl: baseUrl + '/web/profile/profile.html',
+            title: 'Profile',
             controller: 'profileCtrl',
             controllerAs: 'profile',
-            redirectTo: "web.profile.Updateprofile",
-            authenticate: true
+            redirectTo: 'web.profile.Updateprofile',
+            authenticate: true,
         };
 
         var auth_token = {
-            name: "web.profile.AuthToken",
-            parent: "web.profile",
-            url: "/auth-token",
-            templateUrl: baseUrl + "/web/auth/get-token.html",
+            name: 'web.profile.AuthToken',
+            parent: 'web.profile',
+            url: '/auth-token',
+            templateUrl: baseUrl + '/web/auth/get-token.html',
             title: 'Auth Token',
-            authenticate: true
+            authenticate: true,
         };
 
         var update_profile = {
-            name: "web.profile.Updateprofile",
-            parent: "web.profile",
-            url: "/update-profile",
-            templateUrl: baseUrl + "/web/profile/edit-profile/update-profile.html",
+            name: 'web.profile.Updateprofile',
+            parent: 'web.profile',
+            url: '/update-profile',
+            templateUrl: baseUrl + '/web/profile/edit-profile/update-profile.html',
             title: 'Update profile',
-            authenticate: true
+            authenticate: true,
         };
 
         var edit_profile = {
-            name: "web.profile.Editprofile",
-            parent: "web.profile",
-            url: "/edit-profile",
-            templateUrl: baseUrl + "/web/profile/edit-profile/edit-profile.html",
+            name: 'web.profile.Editprofile',
+            parent: 'web.profile',
+            url: '/edit-profile',
+            templateUrl: baseUrl + '/web/profile/edit-profile/edit-profile.html',
             title: 'Edit profile',
-            authenticate: true
+            authenticate: true,
         };
 
         var deactivate_account = {
-            name: "web.profile.deactivate-account",
-            parent: "web.profile",
-            url: "/deactivate-account",
-            templateUrl: baseUrl + "/web/profile/edit-profile/deactivate-account.html",
+            name: 'web.profile.deactivate-account',
+            parent: 'web.profile',
+            url: '/deactivate-account',
+            templateUrl: baseUrl + '/web/profile/edit-profile/deactivate-account.html',
             title: 'Deactivate Account',
-            authenticate: true
+            authenticate: true,
         };
 
         var host_challenge = {
-            name: "web.host-challenge",
-            parent: "web",
-            url: "/host-challenge",
-            templateUrl: baseUrl + "/web/host-challenge.html",
+            name: 'web.host-challenge',
+            parent: 'web',
+            url: '/host-challenge',
+            templateUrl: baseUrl + '/web/host-challenge.html',
             title: 'Host Competition',
             // controller: 'HostCtrl',
             // controllerAs: 'host',
-            authenticate: true
+            authenticate: true,
         };
 
         var permission_denied = {
-            name: "web.permission-denied",
-            parent: "web",
-            url: "/permission-denied",
-            templateUrl: baseUrl + "/web/permission-denied.html",
-            title: "Permission Denied",
+            name: 'web.permission-denied',
+            parent: 'web',
+            url: '/permission-denied',
+            templateUrl: baseUrl + '/web/permission-denied.html',
+            title: 'Permission Denied',
             controller: 'PermCtrl',
             controllerAs: 'perm',
-            authenticate: true
+            authenticate: true,
         };
 
         var change_password = {
-            name: "web.profile.change-password",
-            parent: "web.profile",
-            url: "/change-password",
-            templateUrl: baseUrl + "/web/change-password.html",
-            title: "Change Password",
+            name: 'web.profile.change-password',
+            parent: 'web.profile',
+            url: '/change-password',
+            templateUrl: baseUrl + '/web/change-password.html',
+            title: 'Change Password',
             controller: 'ChangePwdCtrl',
             controllerAs: 'changepwd',
-            authenticate: true
+            authenticate: true,
         };
 
         var error_404 = {
-            name: "error-404",
-            templateUrl: baseUrl + "/web/error-pages/error-404.html",
-            title: "Error 404",
+            name: 'error-404',
+            templateUrl: baseUrl + '/web/error-pages/error-404.html',
+            title: 'Error 404',
         };
 
         var error_500 = {
-            name: "error-500",
-            templateUrl: baseUrl + "/web/error-pages/error-500.html",
-            title: "Error 500",
+            name: 'error-500',
+            templateUrl: baseUrl + '/web/error-pages/error-500.html',
+            title: 'Error 500',
         };
 
         var privacy_policy = {
-            name: "privacy_policy",
-            url: "/privacy-policy",
-            templateUrl: baseUrl + "/web/privacy-policy.html",
-            title: "Privacy Policy"
+            name: 'privacy_policy',
+            url: '/privacy-policy',
+            templateUrl: baseUrl + '/web/privacy-policy.html',
+            title: 'Privacy Policy',
         };
 
         var about_us = {
             name: 'about-us',
-            url: "/about",
-            templateUrl: baseUrl + "/web/about-us.html",
-            title: "About Us"
+            url: '/about',
+            templateUrl: baseUrl + '/web/about-us.html',
+            title: 'About Us',
         };
 
         var our_team = {
             name: 'our-team',
-            url: "/team",
-            templateUrl: baseUrl + "/web/our-team.html",
+            url: '/team',
+            templateUrl: baseUrl + '/web/our-team.html',
             controller: 'ourTeamCtrl',
             controllerAs: 'ourTeam',
-            title: "Team"
+            title: 'Team',
         };
 
         var get_involved = {
             name: 'get-involved',
-            url: "/get-involved",
-            templateUrl: baseUrl + "/web/get-involved.html",
-            title: "Get Involved"
+            url: '/get-involved',
+            templateUrl: baseUrl + '/web/get-involved.html',
+            title: 'Get Involved',
         };
 
         var contact_us = {
-            name: "contact-us",
-            url: "/contact",
-            templateUrl: baseUrl + "/web/contact-us.html",
-            title: "Contact Us",
+            name: 'contact-us',
+            url: '/contact',
+            templateUrl: baseUrl + '/web/contact-us.html',
+            title: 'Contact Us',
             controller: 'contactUsCtrl',
-            controllerAs: 'contactUs'
+            controllerAs: 'contactUs',
         };
 
         var featured_challenge_page = {
-            name: "featured-challenge-page",
-            url: "/featured-challenges/:challengeId",
-            templateUrl: baseUrl + "/web/featured-challenge/challenge-page.html",
+            name: 'featured-challenge-page',
+            url: '/featured-challenges/:challengeId',
+            templateUrl: baseUrl + '/web/featured-challenge/challenge-page.html',
             controller: 'FeaturedChallengeCtrl',
             controllerAs: 'featured_challenge',
-            redirectTo: "featured-challenge-page.overview"
+            redirectTo: 'featured-challenge-page.overview',
         };
 
         var featured_challenge_overview = {
-            name: "featured-challenge-page.overview",
-            parent: "featured-challenge-page",
-            url: "/overview",
-            templateUrl: baseUrl + "/web/featured-challenge/overview.html",
-            title: 'Overview'
+            name: 'featured-challenge-page.overview',
+            parent: 'featured-challenge-page',
+            url: '/overview',
+            templateUrl: baseUrl + '/web/featured-challenge/overview.html',
+            title: 'Overview',
         };
 
         var featured_challenge_evaluation = {
-            name: "featured-challenge-page.evaluation",
-            url: "/evaluation",
-            templateUrl: baseUrl + "/web/featured-challenge/evaluation.html",
-            title: 'Evaluation'
+            name: 'featured-challenge-page.evaluation',
+            url: '/evaluation',
+            templateUrl: baseUrl + '/web/featured-challenge/evaluation.html',
+            title: 'Evaluation',
         };
 
         var featured_challenge_phases = {
-            name: "featured-challenge-page.phases",
-            url: "/phases",
-            templateUrl: baseUrl + "/web/featured-challenge/phases.html",
-            title: 'Phases'
+            name: 'featured-challenge-page.phases',
+            url: '/phases',
+            templateUrl: baseUrl + '/web/featured-challenge/phases.html',
+            title: 'Phases',
         };
 
         var featured_challenge_participate = {
-            name: "featured-challenge-page.participate",
-            url: "/participate",
-            templateUrl: baseUrl + "/web/featured-challenge/participate.html",
-            title: 'Participate'
+            name: 'featured-challenge-page.participate',
+            url: '/participate',
+            templateUrl: baseUrl + '/web/featured-challenge/participate.html',
+            title: 'Participate',
         };
 
         var featured_challenge_leaderboard = {
-            name: "featured-challenge-page.leaderboard",
-            url: "/leaderboard",
-            templateUrl: baseUrl + "/web/featured-challenge/leaderboard.html",
-            title: 'Leaderboard'
+            name: 'featured-challenge-page.leaderboard',
+            url: '/leaderboard',
+            templateUrl: baseUrl + '/web/featured-challenge/leaderboard.html',
+            title: 'Leaderboard',
         };
 
         var featured_challenge_phase_leaderboard = {
-            name: "featured-challenge-page.phase-leaderboard",
-            url: "/leaderboard/:phaseSplitId",
+            name: 'featured-challenge-page.phase-leaderboard',
+            url: '/leaderboard/:phaseSplitId',
             controller: 'FeaturedChallengeCtrl',
             controllerAs: 'featured_challenge',
-            templateUrl: baseUrl + "/web/featured-challenge/leaderboard.html",
-            title: 'Leaderboard'
+            templateUrl: baseUrl + '/web/featured-challenge/leaderboard.html',
+            title: 'Leaderboard',
         };
 
         var challengeInvitation = {
-            name: "challenge-invitation",
-            url: "/accept-invitation/:invitationKey",
-            controller: "ChallengeInviteCtrl",
-            controllerAs: "challenge_invitation",
-            templateUrl: baseUrl + "/web/challenge-invite.html",
-            title: "Accept challenge invitation"
+            name: 'challenge-invitation',
+            url: '/accept-invitation/:invitationKey',
+            controller: 'ChallengeInviteCtrl',
+            controllerAs: 'challenge_invitation',
+            templateUrl: baseUrl + '/web/challenge-invite.html',
+            title: 'Accept challenge invitation',
         };
 
         var get_submission_related_files = {
-            name: "get-submission-related-files",
-            url: "/web/submission-files?bucket&key",
-            controller: "SubmissionFilesCtrl",
-            controllerAs: "submission_files",
+            name: 'get-submission-related-files',
+            url: '/web/submission-files?bucket&key',
+            controller: 'SubmissionFilesCtrl',
+            controllerAs: 'submission_files',
         };
 
         // call all states here
@@ -635,7 +666,9 @@
         $stateProvider.state(participate);
         $stateProvider.state(submission);
         $stateProvider.state(my_submission);
+        $stateProvider.state(my_phase_submission);
         $stateProvider.state(my_challenge_all_submission);
+        $stateProvider.state(my_challenge_phase_all_submission);
         $stateProvider.state(approval_team);
         $stateProvider.state(leaderboard);
         $stateProvider.state(prizes);
@@ -672,26 +705,29 @@
 
         $stateProvider.state(manage);
 
-        $urlRouterProvider.otherwise(function($injector, $location) {
+        $urlRouterProvider.otherwise(function ($injector, $location) {
             var state = $injector.get('$state');
             state.go('error-404');
             return $location.path();
         });
     }
-
 })();
 
 // define run block here
 (function () {
-    
     'use strict';
 
-    angular
-        .module('evalai')
-        .run(runFunc);
+    angular.module('evalai').run(runFunc);
+
+    runFunc.$inject = [
+        '$rootScope',
+        '$state',
+        'utilities',
+        '$window',
+        '$location',
+        'toaster',
+    ];
 
-    runFunc.$inject = ['$rootScope', '$state', 'utilities', '$window', '$location', 'toaster'];
-    
     function runFunc($rootScope, $state, utilities, $window, $location, toaster) {
         // setting timout for token (7days)
         // var getTokenTime = utilities.getData('tokenTime');
@@ -699,17 +735,17 @@
         // .getTime() returns milliseconds, so for 7 days 1000 * 60 * 60 * 24 * 7 = 7 days
         // var tokenExpTime = 1000 * 60 * 60 * 24 * 7;
         // if ((timeNow - getTokenTime) > tokenExpTime) {
-        //     utilities.resetStorage();
+        // utilities.resetStorage();
         // }
 
         $rootScope.isAuth = false;
         // check for valid user
-        $rootScope.$on("$stateChangeStart", function(event, to, toParams) {
+        $rootScope.$on('$stateChangeStart', function (event, to, toParams) {
             if (utilities.isAuthenticated()) {
                 $rootScope.isAuth = true;
                 if (to.authpage) {
                     event.preventDefault();
-                    $state.go("home");
+                    $state.go('home');
                 }
             } else {
                 $rootScope.isAuth = false;
@@ -717,20 +753,21 @@
                     event.preventDefault();
                     $rootScope.previousState = to;
                     $rootScope.previousStateParams = toParams;
-                    $state.go("auth.login");
+                    $state.go('auth.login');
                 }
             }
-
         });
 
-        $rootScope.$on('$stateChangeStart', function(event, to, params) {
+        $rootScope.$on('$stateChangeStart', function (event, to, params) {
             if (to.redirectTo) {
                 event.preventDefault();
-                $state.go(to.redirectTo, params, { location: $location.path() });
+                $state.go(to.redirectTo, params, {
+                    location: $location.path(),
+                });
             }
         });
 
-        $rootScope.$on('$stateChangeSuccess', function() {
+        $rootScope.$on('$stateChangeSuccess', function () {
             // Save the route title
             $rootScope.pageTitle = $state.current.title;
             // Scroll to top
@@ -742,10 +779,10 @@
             }
         });
 
-        $rootScope.notify = function(type, message, timeout) {
+        $rootScope.notify = function (type, message, timeout) {
             // function to pic timeout
             function pick(arg, def) {
-                return (typeof arg === undefined ? def : arg);
+                return typeof arg === undefined ? def : arg;
             }
 
             timeout = pick(timeout, 5000);
@@ -756,43 +793,43 @@
             });
         };
 
-        $rootScope.logout = function() {
+        $rootScope.logout = function () {
             var userKey = utilities.getData('userKey');
             var parameters = {};
             parameters.url = 'auth/logout/';
             parameters.method = 'POST';
             parameters.token = userKey;
             parameters.callback = {
-                onSuccess: function() {
+                onSuccess: function () {
                     utilities.resetStorage();
                     $rootScope.isLoader = false;
-                    $state.go("home");
+                    $state.go('home');
                     $rootScope.isAuth = false;
-                    $rootScope.notify("info", "Successfully logged out!");
+                    $rootScope.notify('info', 'Successfully logged out!');
                 },
-                onError: function() {}
+                onError: function () { },
             };
 
             utilities.sendRequest(parameters);
         };
 
-        $rootScope.checkToken = function() {
+        $rootScope.checkToken = function () {
             var userKey = utilities.getData('userKey');
             var parameters = {};
             parameters.url = 'auth/user/';
             parameters.method = 'GET';
             parameters.token = userKey;
             parameters.callback = {
-                onSuccess: function() {},
-                onError: function(response) {
+                onSuccess: function () { },
+                onError: function (response) {
                     var status = response.status;
                     if (status == 401) {
-                        alert("Timeout, Please login again to continue!");
+                        alert('Timeout, Please login again to continue!');
                         utilities.resetStorage();
-                        $state.go("auth.login");
+                        $state.go('auth.login');
                         $rootScope.isAuth = false;
                     }
-                }
+                },
             };
 
             utilities.sendRequest(parameters);
@@ -802,4 +839,4 @@
             // checkToken();
         }
     }
-})();
+})();
\ No newline at end of file
diff --git a/frontend/src/views/web/challenge/leaderboard.html b/frontend/src/views/web/challenge/leaderboard.html
index c173fc86aa..56d3fe53dd 100644
--- a/frontend/src/views/web/challenge/leaderboard.html
+++ b/frontend/src/views/web/challenge/leaderboard.html
@@ -29,8 +29,9 @@ <h5 class="w-300">Leaderboard</h5>
             <div class="col xs12 s6">
                 <span>
                     <md-select ng-model="challenge.phaseName" placeholder="Select Phase" class="rm-margin">
-                        <md-option ui-sref="web.challenge-main.challenge-page.phase-leaderboard({phaseSplitId:key.id})"
-                            value="{{key.id}}" ng-repeat="key in challenge.phaseSplits" ng-show="{{key.visibility}}">
+                        <md-option
+                            ui-sref="web.challenge-main.challenge-page.phase-leaderboard({phaseSlug:key.challenge_phase_slug, splitCodename:key.dataset_split_codename})"
+                            value="{{key.id}}" ng-repeat="key in challenge.phaseSplits" ng-show="{{key.visibility}}">                    
                             <span class="fs-16 w-300">Phase:
                             </span>{{key.challenge_phase_name}}, <span class="fs-16 w-300">Split: </span>
                             {{key.dataset_split_name}} &nbsp; <span class="new badge orange-background"
@@ -40,17 +41,17 @@ <h5 class="w-300">Leaderboard</h5>
                 </span>
             </div>
         </div>
-        <div class="row" ng-if="challenge.isMultiMetricLeaderboardEnabled[challenge.phaseSplitId]">
+        <div class="row" ng-if="challenge.selectedPhaseSplit.is_multi_metric_leaderboard">
             <div class="col xs12 s6">
                 <span>
                     <md-select ng-model="challenge.orderLeaderboardBy" placeholder="Order by metric" class="rm-margin">
-                        <md-option value="{{key}}" ui-sref="web.challenge-main.challenge-page.phase-metric-leaderboard({phaseSplitId:challenge.phaseSplitId, metric:challenge.encodeMetricURI(key)})"
-                         ng-repeat="key in challenge.phaseSplitLeaderboardSchema[challenge.phaseSplitId].labels">
+                        <md-option value="{{key}}"
+                            ui-sref="web.challenge-main.challenge-page.phase-metric-leaderboard({phaseSlug:challenge.phaseSlug, splitCodename:challenge.splitCodename, metric:challenge.encodeMetricURI(key)})"
+                            ng-repeat="key in challenge.selectedPhaseSplit.leaderboard_schema.labels">
                             <span class="fs-16 w-300">{{key}}</span>
                     </md-select>
                 </span>
-            </div>
-        </div>
+            </div>  </div>
         <div class="row">
             <div class="horizontal-scroll">
                 <div class="col s12">
diff --git a/frontend/src/views/web/challenge/my-challenge-all-submission.html b/frontend/src/views/web/challenge/my-challenge-all-submission.html
index be2b62fa67..b3bb2fb694 100644
--- a/frontend/src/views/web/challenge/my-challenge-all-submission.html
+++ b/frontend/src/views/web/challenge/my-challenge-all-submission.html
@@ -22,9 +22,10 @@ <h5 class="w-300">All Submissions</h5>
         <div class="row">
             <div class="col s6">
                 <span>
-                    <md-select ng-model="challenge.phase.name" placeholder="Select phase" class="rm-margin">
-                        <md-option ng-click="challenge.getAllSubmissionResults(key.id)" value="{{key.name}}"
-                            ng-repeat="key in challenge.phases.results">
+                    <md-select ng-model="challenge.allSubmissionPhaseName" placeholder="Select phase" class="rm-margin">
+                        <md-option
+                            ui-sref="web.challenge-main.challenge-page.my-challenge-phase-all-submission({allSubmissionPhaseSlug:key.slug})"
+                            value="{{key.slug}}" ng-repeat="key in challenge.phases.results">
                             {{key.name}} &nbsp; <span class="new badge orange-background" data-badge-caption="Private"
                                 ng-if="key.showPrivate"></span>
                         </md-option>
diff --git a/frontend/src/views/web/challenge/my-submission.html b/frontend/src/views/web/challenge/my-submission.html
index f7acdb1d7e..7b7e2a172a 100644
--- a/frontend/src/views/web/challenge/my-submission.html
+++ b/frontend/src/views/web/challenge/my-submission.html
@@ -13,8 +13,9 @@ <h6>My Participated Team: {{challenge.participated_team_name}}</h6>
             </div>
             <div class="row fs-16 w-300">
                 <div class="col s12 m6 l6">
-                    <md-select ng-model="challenge.phase.name" placeholder="Select phase" class="rm-margin">
-                        <md-option ng-click="challenge.getResults(key.id)" value="{{key.name}}"
+                <md-select ng-model="challenge.mySubmissionPhaseName" placeholder="Select phase" class="rm-margin">
+                    <md-option ui-sref="web.challenge-main.challenge-page.my-phase-submission({mySubmissionPhaseSlug: key.slug})"
+                        value="{{key.slug}}"
                             ng-repeat="key in challenge.phases.results">{{key.name}} <span
                                 class="new badge orange-background" data-badge-caption="Private"
                                 ng-if="key.showPrivate"></span></md-option>
diff --git a/frontend/tests/controllers-test/challengeCtrl.test.js b/frontend/tests/controllers-test/challengeCtrl.test.js
index 1ebfa38326..f1580f404f 100644
--- a/frontend/tests/controllers-test/challengeCtrl.test.js
+++ b/frontend/tests/controllers-test/challengeCtrl.test.js
@@ -5,7 +5,7 @@ describe('Unit tests for challenge controller', function () {
 
     var $controller, createController, $injector, $rootScope, $state, $scope, utilities, $http, $interval, $mdDialog, moment, vm;
 
-    beforeEach(inject(function (_$controller_, _$injector_,  _$rootScope_, _$state_, _utilities_, _$http_, _$interval_, _$mdDialog_, _moment_) {
+    beforeEach(inject(function (_$controller_, _$injector_, _$rootScope_, _$state_, _utilities_, _$http_, _$interval_, _$mdDialog_, _moment_) {
         $controller = _$controller_;
         $injector = _$injector_;
         $rootScope = _$rootScope_;
@@ -15,10 +15,10 @@ describe('Unit tests for challenge controller', function () {
         $interval = _$interval_;
         $mdDialog = _$mdDialog_;
         moment = _moment_;
-        
+
         $scope = $rootScope.$new();
         createController = function () {
-            return $controller('ChallengeCtrl', {$scope: $scope});
+            return $controller('ChallengeCtrl', { $scope: $scope });
         };
         vm = $controller('ChallengeCtrl', { $scope: $scope });
     }));
@@ -99,22 +99,22 @@ describe('Unit tests for challenge controller', function () {
                 }
 
                 if ((challengePhaseSuccess == true && parameters.url == 'challenges/challenge/undefined/challenge_phase') ||
-                (challengeSuccess == true && parameters.url == 'challenges/challenge/undefined/') ||
-                (challengePhaseSplitSuccess == true && parameters.url == 'challenges/undefined/challenge_phase_split') ||
-                (participantTeamChallengeSuccess == true && parameters.url == 'participants/participant_teams/challenges/undefined/user') ||
-                (participantTeamSuccess == true && parameters.url == 'participants/participant_team') ||
-                (selectExistTeamSuccess == true && parameters.url == 'challenges/challenge/undefined/participant_team/null')) {
+                    (challengeSuccess == true && parameters.url == 'challenges/challenge/undefined/') ||
+                    (challengePhaseSplitSuccess == true && parameters.url == 'challenges/undefined/challenge_phase_split') ||
+                    (participantTeamChallengeSuccess == true && parameters.url == 'participants/participant_teams/challenges/undefined/user') ||
+                    (participantTeamSuccess == true && parameters.url == 'participants/participant_team') ||
+                    (selectExistTeamSuccess == true && parameters.url == 'challenges/challenge/undefined/participant_team/null')) {
 
                     parameters.callback.onSuccess({
                         status: 200,
                         data: successResponse
                     });
                 } else if ((challengePhaseSuccess == false && parameters.url == 'challenges/challenge/undefined/challenge_phase') ||
-                (challengeSuccess == false && parameters.url == 'challenges/challenge/undefined/') ||
-                (challengePhaseSplitSuccess == false && parameters.url == 'challenges/undefined/challenge_phase_split') ||
-                (participantTeamChallengeSuccess == false && parameters.url == 'participants/participant_teams/challenges/undefined/user') ||
-                (participantTeamSuccess == false && parameters.url == 'participants/participant_team') ||
-                (selectExistTeamSuccess == false && parameters.url == 'challenges/challenge/undefined/participant_team/null')){
+                    (challengeSuccess == false && parameters.url == 'challenges/challenge/undefined/') ||
+                    (challengePhaseSplitSuccess == false && parameters.url == 'challenges/undefined/challenge_phase_split') ||
+                    (participantTeamChallengeSuccess == false && parameters.url == 'participants/participant_teams/challenges/undefined/user') ||
+                    (participantTeamSuccess == false && parameters.url == 'participants/participant_team') ||
+                    (selectExistTeamSuccess == false && parameters.url == 'challenges/challenge/undefined/participant_team/null')) {
 
                     parameters.callback.onError({
                         data: errorResponse,
@@ -213,8 +213,9 @@ describe('Unit tests for challenge controller', function () {
 
         team_list.forEach(response => {
             it('pagination next is ' + response.next + ' and previous is ' + response.previous + '\
-                `participants/participant_team`', function () {;
-                challengeSuccess = true;    
+                `participants/participant_team`', function () {
+                ;
+                challengeSuccess = true;
                 participantTeamChallengeSuccess = true;
                 participantTeamSuccess = true;
                 selectExistTeamSuccess = null;
@@ -446,7 +447,7 @@ describe('Unit tests for challenge controller', function () {
                 }
             };
             utilities.storeData('userKey', 'encrypted key');
-       
+
             vm = createController();
             spyOn(vm, 'startLoader');
             spyOn($http, 'get').and.callFake(function () {
@@ -460,7 +461,7 @@ describe('Unit tests for challenge controller', function () {
             var headers = {
                 'Authorization': "Token " + utilities.getData('userKey')
             };
-            expect($http.get).toHaveBeenCalledWith(url, {headers: headers});
+            expect($http.get).toHaveBeenCalledWith(url, { headers: headers });
         });
 
         it('backend error of the particular challenge `challenges/challenge/<challenge_id>/', function () {
@@ -511,7 +512,7 @@ describe('Unit tests for challenge controller', function () {
                 expect(vm.phases.results[i].showPrivate).toBeTruthy();
             }
 
-            for(var i = 0; i < successResponse.results.length; i++){
+            for (var i = 0; i < successResponse.results.length; i++) {
                 var offset = new Date(successResponse.results[i].start_date).getTimezoneOffset();
                 expect(vm.phases.results[i].time_zone).toEqual(moment.tz.zone(timezone).abbr(offset));
             }
@@ -564,7 +565,7 @@ describe('Unit tests for challenge controller', function () {
             vm.isParticipated = true;
             vm = createController();
             expect(vm.phaseSplits).toEqual(successResponse);
-            for(var i = 0; i < successResponse.length; i++) {
+            for (var i = 0; i < successResponse.length; i++) {
                 if (successResponse[i].visibility != challengePhaseVisibility.public) {
                     expect(vm.phaseSplits[i].showPrivate).toBeTruthy();
                 }
@@ -627,7 +628,7 @@ describe('Unit tests for challenge controller', function () {
                         limits: {
                             submission_limit_exceeded: true,
                             remaining_submissions_today_count: 12,
-                            remaining_time: 12/12/12,
+                            remaining_time: 12 / 12 / 12,
                         }
                     },
                 ]
@@ -637,7 +638,7 @@ describe('Unit tests for challenge controller', function () {
             vm.displayDockerSubmissionInstructions(true, true);
             expect(vm.phaseRemainingSubmissions).toEqual(successResponse);
             var details = vm.phaseRemainingSubmissions.phases;
-            for (var i=0; i < details.length; i++) {
+            for (var i = 0; i < details.length; i++) {
                 expect(vm.phaseRemainingSubmissionsFlags[details[i].id]).toEqual('maxExceeded');
             }
             expect(utilities.hideLoader).toHaveBeenCalled();
@@ -651,7 +652,7 @@ describe('Unit tests for challenge controller', function () {
                         limits: {
                             submission_limit_exceeded: false,
                             remaining_submissions_today_count: 12,
-                            remaining_time: 12/12/12,
+                            remaining_time: 12 / 12 / 12,
                         }
                     },
                 ]
@@ -661,7 +662,7 @@ describe('Unit tests for challenge controller', function () {
             vm.displayDockerSubmissionInstructions(true, true);
             expect(vm.phaseRemainingSubmissions).toEqual(successResponse);
             var details = vm.phaseRemainingSubmissions.phases;
-            for (var i=0; i < details.length; i++) {
+            for (var i = 0; i < details.length; i++) {
                 expect(vm.phaseRemainingSubmissionsFlags[details[i].id]).toEqual('showSubmissionNumbers');
             }
             expect(utilities.hideLoader).toHaveBeenCalled();
@@ -675,7 +676,7 @@ describe('Unit tests for challenge controller', function () {
                         limits: {
                             submission_limit_exceeded: false,
                             remaining_submissions_today_count: 0,
-                            remaining_time: 12/12/12,
+                            remaining_time: 12 / 12 / 12,
                         }
                     },
                 ]
@@ -685,7 +686,7 @@ describe('Unit tests for challenge controller', function () {
             vm.displayDockerSubmissionInstructions(true, true);
             expect(vm.phaseRemainingSubmissions).toEqual(successResponse);
             var details = vm.phaseRemainingSubmissions.phases;
-            for (var i=0; i < details.length; i++) {
+            for (var i = 0; i < details.length; i++) {
                 expect(vm.eachPhase).toEqual(details[i]);
                 expect(vm.phaseRemainingSubmissionsFlags[details[i].id]).toEqual('showClock');
 
@@ -722,7 +723,7 @@ describe('Unit tests for challenge controller', function () {
             success: 'success',
         };
 
-        beforeEach(function() {
+        beforeEach(function () {
             spyOn(vm, 'startLoader');
             spyOn(vm, 'stopLoader');
             spyOn($rootScope, 'notify');
@@ -848,24 +849,31 @@ describe('Unit tests for challenge controller', function () {
 
         it('successfully get the leaderboard', function () {
             success = true;
+
             successResponse = {
-                results: {
-                    duration: 'year',
-                    results: [
-                        {
-                            id: 1,
-                            leaderboard__schema:
-                                {
-                                    labels: ['label1', 'label2'],
-                                    default_order_by: 'default_order_by',
-                                },
-                            submission__submitted_at: (new Date() - new Date().setFullYear(new Date().getFullYear() - 1)),
+                results: [
+                    {
+                        id: 1,
+                        leaderboard__schema: {
+                            labels: ['label1', 'label2'],
+                            default_order_by: 'default_order_by',
                         },
-                    ]
-                },
+
+                        submission__submitted_at: new Date().toISOString(),
+                    },
+                ]
             };
-            var phaseSplitId = 1;
-            vm.getLeaderboard(phaseSplitId);
+            var phaseSlug = 'phase-slug';
+            var splitCodename = 'split-codename';
+
+
+            vm.phaseSplits = [{
+                id: 1,
+                challenge_phase_slug: phaseSlug,
+                dataset_split_codename: splitCodename
+            }];
+
+            vm.getLeaderboard(phaseSlug, splitCodename);
             vm.stopLeaderboard();
             expect($interval.cancel).toHaveBeenCalled();
             expect(vm.isResult).toEqual(true);
@@ -916,6 +924,7 @@ describe('Unit tests for challenge controller', function () {
             }
         ];
 
+
         beforeEach(function () {
             spyOn($interval, 'cancel');
             spyOn(vm, 'startLoader');
@@ -929,24 +938,40 @@ describe('Unit tests for challenge controller', function () {
                 results: [
                     {
                         id: 1,
+                        slug: "phase-1-slug",
                         name: "Challenge phase name",
                         description: "Challenge phase description",
-                        leaderboard_public: true
+                        leaderboard_public: true,
+                        is_restricted_to_select_one_submission: false,
+                        default_submission_meta_attributes: []
                     },
                 ]
             };
 
+
             utilities.sendRequest = function (parameters) {
-                if ((submissionCountSuccess == true && parameters.url == "analytics/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/count") ||
-                (submissionListSuccess == true && parameters.url == "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/submission/")) {
-                    parameters.callback.onSuccess({
-                        data: successResponse
-                    });
-                } else if ((submissionCountSuccess == false && parameters.url == "analytics/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/count") ||
-                (submissionListSuccess == false && parameters.url == "jobs/challenge/" + vm.challengeId + "/challenge_phase/" + vm.phaseId + "/submission/")){
-                    parameters.callback.onError({
-                        data: errorResponse
-                    });
+
+                if (parameters.url.includes('/count')) {
+                    if (submissionCountSuccess) {
+                        parameters.callback.onSuccess({
+                            data: successResponse
+                        });
+                    } else {
+                        parameters.callback.onError({
+                            data: errorResponse
+                        });
+                    }
+                    // Check for submission list API call
+                } else if (parameters.url.includes('/submission')) {
+                    if (submissionListSuccess) {
+                        parameters.callback.onSuccess({
+                            data: successResponse
+                        });
+                    } else {
+                        parameters.callback.onError({
+                            data: errorResponse
+                        });
+                    }
                 }
             };
         });
@@ -954,44 +979,46 @@ describe('Unit tests for challenge controller', function () {
         it('get the leaderboard of the current phase', function () {
             submissionCountSuccess = null;
             submissionListSuccess = null;
-            var phaseId = 1;
-            vm.getResults(phaseId);
+            var phaseSlug = 'phase-1-slug';
+
+            errorResponse = { detail: 'error' };
+            vm.getResults(phaseSlug);
             vm.stopFetchingSubmissions();
             expect($interval.cancel).toHaveBeenCalled();
             expect(vm.isResult).toEqual(true);
-            expect(vm.phaseId).toEqual(phaseId);
+            expect(vm.phaseId).toEqual(1);
 
             expect(vm.currentPhaseLeaderboardPublic).toEqual(true);
         });
 
         it('get the submission count \
-            `analytics/challenge/<challenge_id>/challenge_phase/<phase_id>/count`', function () {
+    `analytics/challenge/<challenge_id>/challenge_phase/<phase_id>/count`', function () {
             submissionCountSuccess = true;
             submissionListSuccess = null;
-            var phaseId = 1;
+            var phaseSlug = 'phase-1-slug';
             successResponse = {
                 challenge_phase: 1,
                 participant_team_submission_count: 200
             };
-            vm.getResults(phaseId);
+            vm.getResults(phaseSlug);
             expect(vm.submissionCount).toEqual(successResponse.participant_team_submission_count);
         });
 
-        it('backend error on getting submission count \
-            `analytics/challenge/<challenge_id>/challenge_phase/<phase_id>/count`', function () {
+        it('backend error on getting submission count...', function () {
             submissionCountSuccess = false;
             submissionListSuccess = null;
-            var phaseId = 1;
-            errorResponse = 'error';
-            vm.getResults(phaseId);
+            var phaseSlug = 'phase-1-slug';
+
+            errorResponse = { detail: 'error' };
+            vm.getResults(phaseSlug);
             expect($rootScope.notify).toHaveBeenCalledWith("error", errorResponse);
         });
 
         submission_list.forEach(response => {
             it('get submissions of a particular challenge phase when pagination next is ' + response.next + ' \
-                and previous is ' + response.previous + '`jobs/challenge/<challenge_id>/challenge_phase/<phase_id>/submission/`', function () {
+        and previous is ' + response.previous + '`jobs/challenge/<challenge_id>/challenge_phase/<phase_id>/submission/`', function () {
                 submissionListSuccess = true;
-                var phaseId = 1;
+                var phaseSlug = 'phase-1-slug';
                 successResponse = response;
                 successResponse.results = [
                     {
@@ -1003,10 +1030,10 @@ describe('Unit tests for challenge controller', function () {
                     }
                 ];
 
-                vm.getResults(phaseId);
+                vm.getResults(phaseSlug);
                 expect(vm.isExistLoader).toBeTruthy();
                 expect(vm.startLoader).toHaveBeenCalledWith("Loading Submissions");
-                for (var i = 0; i < successResponse.results.length; i++){
+                for (var i = 0; i < successResponse.results.length; i++) {
                     expect(vm.submissionVisibility[successResponse.results[i].id]).toEqual(successResponse.results[i].is_public);
                     expect(vm.baselineStatus[successResponse.results[i].id] = successResponse.results[i].is_baseline);
                 }
@@ -1035,14 +1062,14 @@ describe('Unit tests for challenge controller', function () {
         });
 
         it('backend error on getting submissions of a particular challenge \
-            `jobs/challenge/<challenge_id>/challenge_phase/<phase_id>/submission/`', function () {
+    `jobs/challenge/<challenge_id>/challenge_phase/<phase_id>/submission/`', function () {
             submissionListSuccess = false;
             submissionCountSuccess = null;
-            var phaseId = 1;
+            var phaseSlug = 'phase-1-slug';
             errorResponse = {
                 detail: 'error'
             };
-            vm.getResults(phaseId);
+            vm.getResults(phaseSlug);
             expect(utilities.storeData).toHaveBeenCalledWith("emailError", errorResponse.detail);
             expect($state.go).toHaveBeenCalledWith('web.permission-denied');
             expect(vm.stopLoader).toHaveBeenCalled();
@@ -1051,7 +1078,7 @@ describe('Unit tests for challenge controller', function () {
         it('to load data with pagination `load` function', function () {
             submissionListSuccess = true;
             submissionCountSuccess = null;
-            var phaseId = 1;
+            var phaseSlug = 'phase-1-slug';
             successResponse = {
                 results: [
                     {
@@ -1062,11 +1089,11 @@ describe('Unit tests for challenge controller', function () {
                         is_baseline: true
                     }
                 ],
-                // get submissions response
+
                 next: "page=4",
                 previous: "page=2",
-            };      
-            vm.getResults(phaseId);
+            };
+            vm.getResults(phaseSlug);
             spyOn($http, 'get').and.callFake(function () {
                 var deferred = $injector.get('$q').defer();
                 return deferred.promise;
@@ -1078,7 +1105,7 @@ describe('Unit tests for challenge controller', function () {
             var headers = {
                 'Authorization': "Token " + utilities.getData('userKey')
             };
-            expect($http.get).toHaveBeenCalledWith(url, {headers: headers});
+            expect($http.get).toHaveBeenCalledWith(url, { headers: headers });
         });
     });
 
@@ -1341,9 +1368,8 @@ describe('Unit tests for challenge controller', function () {
             expect($rootScope.notify).toHaveBeenCalledWith("error", "New team couldn't be created.");
         });
     });
-
     describe('Unit tests for getAllSubmissionResults function \
-        `challenges/<challenge_id>/challenge_phase/<phase_id>/submissions`', function() {
+    `challenges/<challenge_id>/challenge_phase/<phase_id>/submissions`', function () {
         var success, successResponse;
         var errorResponse = {
             detail: 'error'
@@ -1353,26 +1379,31 @@ describe('Unit tests for challenge controller', function () {
                 count: 0,
                 next: null,
                 previous: null,
+                results: []
             },
             {
                 count: 2,
                 next: null,
                 previous: null,
+                results: [{ id: 1, is_public: true, is_verified_by_host: false }]
             },
             {
                 count: 30,
                 next: 'page=5',
                 previous: null,
+                results: [{ id: 1, is_public: true, is_verified_by_host: false }]
             },
             {
                 count: 30,
                 next: null,
                 previous: 'page=3',
+                results: [{ id: 1, is_public: true, is_verified_by_host: false }]
             },
             {
                 count: 30,
                 next: 'page=4',
                 previous: 'page=2',
+                results: [{ id: 1, is_public: true, is_verified_by_host: false }]
             }
         ];
 
@@ -1384,6 +1415,13 @@ describe('Unit tests for challenge controller', function () {
             spyOn(utilities, 'storeData');
             spyOn($state, 'go');
 
+
+            vm.phases = {
+                results: [
+                    { id: 1, slug: 'all-submissions-slug' }
+                ]
+            };
+
             utilities.sendRequest = function (parameters) {
                 if (success) {
                     parameters.callback.onSuccess({
@@ -1397,12 +1435,14 @@ describe('Unit tests for challenge controller', function () {
             };
         });
 
+
         submission_list.forEach(response => {
-            it('submission list have count' + response.count + ', next ' + response.next + 'and previous ' + response.previous, function() {
+            it('submission list have count' + response.count + ', next ' + response.next + 'and previous ' + response.previous, function () {
                 success = true;
                 successResponse = response;
-                var phaseId = 1
-                vm.getAllSubmissionResults(phaseId);
+                var phaseSlug = "all-submissions-slug";
+                var phaseId = 1;
+                vm.getAllSubmissionResults(phaseSlug);
                 vm.stopFetchingSubmissions();
                 expect($interval.cancel).toHaveBeenCalled();
                 expect(vm.isResult).toEqual(true);
@@ -1438,10 +1478,12 @@ describe('Unit tests for challenge controller', function () {
             });
         });
 
+
         it('backend error', function () {
             success = false;
-            var phaseId = 1
-            vm.getAllSubmissionResults(phaseId);
+            var phaseSlug = "all-submissions-slug";
+            var phaseId = 1;
+            vm.getAllSubmissionResults(phaseSlug);
             vm.stopFetchingSubmissions();
             expect($interval.cancel).toHaveBeenCalled();
             expect(vm.isResult).toEqual(true);
@@ -1482,43 +1524,43 @@ describe('Unit tests for challenge controller', function () {
 
     describe('Unit tests for showapprovalparticipantteamDialog function', function () {
         var $mdDialog;
-        
+
         beforeEach(function () {
             $mdDialog = $injector.get('$mdDialog');
         });
-    
+
         it('should open dialog when approved_status is true', function () {
             var $mdDialogOpened = false;
             $mdDialog.show = jasmine.createSpy().and.callFake(function () {
                 $mdDialogOpened = true;
             });
-            
+
             var challengeId = '123';
             var participant_team_id = '456';
             var approved_status = true;
-            
+
             vm.showapprovalparticipantteamDialog(challengeId, participant_team_id, approved_status);
-            
+
             expect($mdDialog.show).toHaveBeenCalled();
             expect($mdDialogOpened).toEqual(true);
         });
-    
+
         it('should call check_approval_status when approved_status is false', function () {
             vm.check_approval_status = jasmine.createSpy();
-            
+
             var challengeId = '123';
             var participant_team_id = '456';
             var approved_status = false;
-            
+
             vm.showapprovalparticipantteamDialog(challengeId, participant_team_id, approved_status);
-            
+
             expect(vm.check_approval_status).toHaveBeenCalledWith(challengeId, participant_team_id, approved_status, false);
         });
     });
 
     describe('Unit tests for check_approval_status function', function () {
         var success, errorResponse, secondfunction;
-    
+
         beforeEach(function () {
             spyOn($rootScope, 'notify');
             spyOn($state, 'reload');
@@ -1539,38 +1581,38 @@ describe('Unit tests for challenge controller', function () {
                 }
             };
         });
-    
+
         it('should handle successful approval of participant team', function () {
             success = true;
-    
+
             var challengeId = '123';
             var participant_team_id = '456';
             var approved_status = true;
             var formvalid = true;
-    
+
             vm.check_approval_status(challengeId, participant_team_id, approved_status, formvalid);
-    
+
             expect($rootScope.notify).toHaveBeenCalledWith('success', 'Participant Team Approved successfully.');
             expect($mdDialog.hide).toHaveBeenCalled();
         });
-    
+
         it('should handle error during approval of participant team', function () {
             success = false;
             secondfunction = false;
             errorResponse = {
-                    error: 'Approval failed'
+                error: 'Approval failed'
             };
-    
+
             var challengeId = '123';
             var participant_team_id = '456';
             var approved_status = true;
             var formvalid = true;
-    
+
             vm.check_approval_status(challengeId, participant_team_id, approved_status, formvalid);
-    
+
             expect($rootScope.notify).toHaveBeenCalledWith('error', 'Approval failed');
         });
-    
+
         it('should handle disapproval of participant team', function () {
             success = false;
             secondfunction = true;
@@ -1578,9 +1620,9 @@ describe('Unit tests for challenge controller', function () {
             var participant_team_id = '456';
             var approved_status = false;
             var formvalid = false;
-    
+
             vm.check_approval_status(challengeId, participant_team_id, approved_status, formvalid);
-    
+
             expect($rootScope.notify).toHaveBeenCalledWith('success', 'Participant Team Disapproved successfully.');
             expect($state.reload).not.toHaveBeenCalled();
         });
@@ -1776,7 +1818,7 @@ describe('Unit tests for challenge controller', function () {
             vm.project_url = 'project url';
             vm.publication_url = 'publication url';
             vm.submissionMetaData = {
-                submission_metadata : null
+                submission_metadata: null
             };
             vm.currentSubmissionMetaData = [
                 {
@@ -1790,7 +1832,7 @@ describe('Unit tests for challenge controller', function () {
                     name: 'SingleOptionAttribute',
                     type: 'radio',
                     value: null,
-                    options: ['A','B','C'],
+                    options: ['A', 'B', 'C'],
                     $$hashKey: 'object:43',
                     description: 'Sample',
                 },
@@ -1798,7 +1840,7 @@ describe('Unit tests for challenge controller', function () {
                     name: 'MultipleChoiceAttribute',
                     type: 'checkbox',
                     values: [],
-                    options: ['alpha','beta','gamma'],
+                    options: ['alpha', 'beta', 'gamma'],
                     $$hashKey: 'object:44',
                     description: 'Sample',
                 },
@@ -1824,7 +1866,7 @@ describe('Unit tests for challenge controller', function () {
             vm.project_url = 'project url';
             vm.publication_url = 'publication url';
             vm.submissionMetaData = {
-                submission_metadata : null
+                submission_metadata: null
             };
             vm.currentSubmissionMetaData = [
                 {
@@ -1838,7 +1880,7 @@ describe('Unit tests for challenge controller', function () {
                     name: 'SingleOptionAttribute',
                     type: 'radio',
                     value: null,
-                    options: ['A','B','C'],
+                    options: ['A', 'B', 'C'],
                     $$hashKey: 'object:43',
                     description: 'Sample',
                 },
@@ -1846,7 +1888,7 @@ describe('Unit tests for challenge controller', function () {
                     name: 'MultipleChoiceAttribute',
                     type: 'checkbox',
                     values: [],
-                    options: ['alpha','beta','gamma'],
+                    options: ['alpha', 'beta', 'gamma'],
                     $$hashKey: 'object:44',
                     description: 'Sample',
                 },
@@ -2595,7 +2637,7 @@ describe('Unit tests for challenge controller', function () {
         it('valid `edit challenge phase` form & successfull edit', function () {
             var editChallengePhaseForm = true;
             success = true;
-            vm.page.challenge_phase ={
+            vm.page.challenge_phase = {
                 id: 1,
                 name: "challenge phase name",
                 description: "challenge phase description",
@@ -2616,7 +2658,7 @@ describe('Unit tests for challenge controller', function () {
         it('valid `edit challenge phase` form & backend error', function () {
             var editChallengePhaseForm = true;
             success = false;
-            vm.page.challenge_phase ={
+            vm.page.challenge_phase = {
                 id: 1,
                 name: "challenge phase name",
                 description: "challenge phase description",
@@ -2666,7 +2708,7 @@ describe('Unit tests for challenge controller', function () {
         });
 
         it('change challenge state from `public` to `private`', function () {
-            vm.isPublished = true; 
+            vm.isPublished = true;
             vm.publishChallenge(ev);
             expect(vm.publishDesc).toEqual(null);
             expect(ev.stopPropagation).toHaveBeenCalled();
@@ -2674,7 +2716,7 @@ describe('Unit tests for challenge controller', function () {
         });
 
         it('change challenge state from `private` to `public`', function () {
-            vm.isPublished = false; 
+            vm.isPublished = false;
             vm.publishChallenge(ev);
             expect(vm.publishDesc).toEqual(null);
             expect(ev.stopPropagation).toHaveBeenCalled();
diff --git a/tests/unit/analytics/test_views.py b/tests/unit/analytics/test_views.py
index 02421c014c..cd91e29b58 100644
--- a/tests/unit/analytics/test_views.py
+++ b/tests/unit/analytics/test_views.py
@@ -221,14 +221,12 @@ def setUp(self):
         self.challenge.participant_teams.add(self.participant_team)
 
     def test_get_participant_team_count(self):
-
         expected = {"participant_team_count": 1}
         response = self.client.get(self.url, {})
         self.assertEqual(response.data, expected)
         self.assertEqual(response.status_code, status.HTTP_200_OK)
 
     def test_get_participant_team_count_when_challenge_does_not_exist(self):
-
         self.url = reverse_lazy(
             "analytics:get_participant_team_count",
             kwargs={"challenge_pk": self.challenge.pk + 10},
@@ -256,14 +254,12 @@ def setUp(self):
         self.challenge.participant_teams.add(self.participant_team3)
 
     def test_get_participant_team_count(self):
-
         expected = {"participant_count": 2}
         response = self.client.get(self.url, {})
         self.assertEqual(response.data, expected)
         self.assertEqual(response.status_code, status.HTTP_200_OK)
 
     def test_get_participant_team_count_when_challenge_doe_not_exist(self):
-
         self.url = reverse_lazy(
             "analytics:get_participant_count",
             kwargs={"challenge_pk": self.challenge.pk + 10},
@@ -301,7 +297,6 @@ def setUp(self):
         )
 
     def test_get_participant_team_count_when_challenge_does_not_exist(self):
-
         self.url = reverse_lazy(
             "analytics:get_submission_count",
             kwargs={
@@ -380,7 +375,8 @@ def setUp(self):
             "analytics:get_challenge_phase_submission_count_by_team",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -443,7 +439,8 @@ def test_get_challenge_phase_submission_count_by_team_when_challenge_does_not_ex
             "analytics:get_challenge_phase_submission_count_by_team",
             kwargs={
                 "challenge_pk": self.challenge.pk + 10,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -463,7 +460,8 @@ def test_get_challenge_phase_submission_count_by_team_when_challenge_phase_does_
             "analytics:get_challenge_phase_submission_count_by_team",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk + 10,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk + 10,
+                "version": "v1",
             },
         )
 
@@ -486,7 +484,8 @@ def test_get_challenge_phase_submission_count_by_team_for_participant_team_1(
             "analytics:get_challenge_phase_submission_count_by_team",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -509,7 +508,8 @@ def test_get_challenge_phase_submission_count_by_team_for_participant_team_3(
             "analytics:get_challenge_phase_submission_count_by_team",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
diff --git a/tests/unit/challenges/test_urls.py b/tests/unit/challenges/test_urls.py
index 96c89f214b..0a287e6382 100644
--- a/tests/unit/challenges/test_urls.py
+++ b/tests/unit/challenges/test_urls.py
@@ -200,14 +200,18 @@ def test_challenges_urls(self):
             "challenges:download_all_submissions",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "version": "v1",
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
                 "file_type": self.file_type,
             },
         )
         self.assertEqual(
             self.url,
-            "/api/challenges/{}/phase/{}/download_all_submissions/{}/".format(
-                self.challenge.pk, self.challenge_phase.pk, self.file_type
+            "/api/challenges/{}/phase/{}/{}/download_all_submissions/{}/".format(
+                self.challenge.pk,
+                "v1",
+                self.challenge_phase.pk,
+                self.file_type,
             ),
         )
         resolver = resolve(self.url)
diff --git a/tests/unit/challenges/test_views.py b/tests/unit/challenges/test_views.py
index ba543c7ae2..2d085c8572 100644
--- a/tests/unit/challenges/test_views.py
+++ b/tests/unit/challenges/test_views.py
@@ -751,8 +751,6 @@ def test_particular_challenge_partial_update(self):
             "submission_guidelines": self.challenge.submission_guidelines,
             "evaluation_details": self.challenge.evaluation_details,
             "image": None,
-            "start_date": None,
-            "end_date": None,
             "creator": {
                 "id": self.challenge.creator.pk,
                 "team_name": self.challenge.creator.team_name,
@@ -830,8 +828,6 @@ def test_particular_challenge_update(self):
             "submission_guidelines": self.update_submission_guidelines,
             "evaluation_details": self.challenge.evaluation_details,
             "image": None,
-            "start_date": None,
-            "end_date": None,
             "creator": {
                 "id": self.challenge.creator.pk,
                 "team_name": self.challenge.creator.team_name,
@@ -2996,7 +2992,9 @@ def test_get_challenge_phase(self):
                 "slug": self.challenge_phase.slug,
                 "is_restricted_to_select_one_submission": self.challenge_phase.is_restricted_to_select_one_submission,
                 "submission_meta_attributes": None,
-                "is_partial_submission_evaluation_enabled": self.challenge_phase.is_partial_submission_evaluation_enabled,
+                "is_partial_submission_evaluation_enabled": (
+                    self.challenge_phase.is_partial_submission_evaluation_enabled
+                ),
                 "allowed_submission_file_types": self.challenge_phase.allowed_submission_file_types,
                 "default_submission_meta_attributes": self.challenge_phase.default_submission_meta_attributes,
                 "allowed_email_ids": self.challenge_phase.allowed_email_ids,
@@ -3023,9 +3021,13 @@ def test_get_challenge_phase(self):
                 "max_submissions": self.private_challenge_phase.max_submissions,
                 "max_concurrent_submissions_allowed": self.private_challenge_phase.max_concurrent_submissions_allowed,
                 "slug": self.private_challenge_phase.slug,
-                "is_restricted_to_select_one_submission": self.private_challenge_phase.is_restricted_to_select_one_submission,
+                "is_restricted_to_select_one_submission": (
+                    self.private_challenge_phase.is_restricted_to_select_one_submission
+                ),
                 "submission_meta_attributes": None,
-                "is_partial_submission_evaluation_enabled": self.challenge_phase.is_partial_submission_evaluation_enabled,
+                "is_partial_submission_evaluation_enabled": (
+                    self.challenge_phase.is_partial_submission_evaluation_enabled
+                ),
                 "allowed_submission_file_types": self.challenge_phase.allowed_submission_file_types,
                 "default_submission_meta_attributes": self.private_challenge_phase.default_submission_meta_attributes,
                 "allowed_email_ids": self.challenge_phase.allowed_email_ids,
@@ -3062,7 +3064,9 @@ def test_get_challenge_phase_when_user_is_not_authenticated(self):
                 "slug": self.challenge_phase.slug,
                 "is_restricted_to_select_one_submission": self.challenge_phase.is_restricted_to_select_one_submission,
                 "submission_meta_attributes": None,
-                "is_partial_submission_evaluation_enabled": self.challenge_phase.is_partial_submission_evaluation_enabled,
+                "is_partial_submission_evaluation_enabled": (
+                    self.challenge_phase.is_partial_submission_evaluation_enabled
+                ),
                 "allowed_submission_file_types": self.challenge_phase.allowed_submission_file_types,
                 "default_submission_meta_attributes": self.challenge_phase.default_submission_meta_attributes,
                 "allowed_email_ids": self.challenge_phase.allowed_email_ids,
@@ -3109,7 +3113,9 @@ def test_get_challenge_phase_when_user_is_host(self):
                 "slug": self.challenge_phase.slug,
                 "is_restricted_to_select_one_submission": self.challenge_phase.is_restricted_to_select_one_submission,
                 "submission_meta_attributes": None,
-                "is_partial_submission_evaluation_enabled": self.challenge_phase.is_partial_submission_evaluation_enabled,
+                "is_partial_submission_evaluation_enabled": (
+                    self.challenge_phase.is_partial_submission_evaluation_enabled
+                ),
                 "allowed_submission_file_types": self.challenge_phase.allowed_submission_file_types,
                 "default_submission_meta_attributes": self.challenge_phase.default_submission_meta_attributes,
                 "allowed_email_ids": self.challenge_phase.allowed_email_ids,
@@ -3136,10 +3142,14 @@ def test_get_challenge_phase_when_user_is_host(self):
                 "max_submissions": self.private_challenge_phase.max_submissions,
                 "max_concurrent_submissions_allowed": self.challenge_phase.max_concurrent_submissions_allowed,
                 "slug": self.private_challenge_phase.slug,
-                "is_restricted_to_select_one_submission": self.private_challenge_phase.is_restricted_to_select_one_submission,
+                "is_restricted_to_select_one_submission": (
+                    self.private_challenge_phase.is_restricted_to_select_one_submission
+                ),
                 "submission_meta_attributes": None,
                 "allowed_submission_file_types": self.private_challenge_phase.allowed_submission_file_types,
-                "is_partial_submission_evaluation_enabled": self.private_challenge_phase.is_partial_submission_evaluation_enabled,
+                "is_partial_submission_evaluation_enabled": (
+                    self.private_challenge_phase.is_partial_submission_evaluation_enabled
+                ),
                 "default_submission_meta_attributes": self.private_challenge_phase.default_submission_meta_attributes,
                 "allowed_email_ids": self.private_challenge_phase.allowed_email_ids,
                 "is_submission_public": self.private_challenge_phase.is_submission_public,
@@ -3866,10 +3876,14 @@ def test_get_challenge_phase_split(self):
                 "id": self.challenge_phase_split.id,
                 "challenge_phase": self.challenge_phase.id,
                 "challenge_phase_name": self.challenge_phase.name,
+                "challenge_phase_slug": self.challenge_phase.slug,
                 "dataset_split": self.dataset_split.id,
                 "dataset_split_name": self.dataset_split.name,
+                "dataset_split_codename": self.dataset_split.codename,
                 "visibility": self.challenge_phase_split.visibility,
-                "show_leaderboard_by_latest_submission": self.challenge_phase_split.show_leaderboard_by_latest_submission,
+                "show_leaderboard_by_latest_submission": (
+                    self.challenge_phase_split.show_leaderboard_by_latest_submission
+                ),
                 "show_execution_time": False,
                 "leaderboard_schema": self.challenge_phase_split.leaderboard.schema,
                 "is_multi_metric_leaderboard": self.challenge_phase_split.is_multi_metric_leaderboard,
@@ -3905,10 +3919,14 @@ def test_get_challenge_phase_split_when_user_is_challenge_host(self):
                 "id": self.challenge_phase_split.id,
                 "challenge_phase": self.challenge_phase.id,
                 "challenge_phase_name": self.challenge_phase.name,
+                "challenge_phase_slug": self.challenge_phase.slug,
                 "dataset_split": self.dataset_split.id,
                 "dataset_split_name": self.dataset_split.name,
+                "dataset_split_codename": self.dataset_split.codename,
                 "visibility": self.challenge_phase_split.visibility,
-                "show_leaderboard_by_latest_submission": self.challenge_phase_split.show_leaderboard_by_latest_submission,
+                "show_leaderboard_by_latest_submission": (
+                    self.challenge_phase_split.show_leaderboard_by_latest_submission
+                ),
                 "show_execution_time": False,
                 "leaderboard_schema": self.challenge_phase_split.leaderboard.schema,
                 "is_multi_metric_leaderboard": self.challenge_phase_split.is_multi_metric_leaderboard,
@@ -3917,10 +3935,14 @@ def test_get_challenge_phase_split_when_user_is_challenge_host(self):
                 "id": self.challenge_phase_split_host.id,
                 "challenge_phase": self.challenge_phase.id,
                 "challenge_phase_name": self.challenge_phase.name,
+                "challenge_phase_slug": self.challenge_phase.slug,
                 "dataset_split": self.dataset_split_host.id,
                 "dataset_split_name": self.dataset_split_host.name,
+                "dataset_split_codename": self.dataset_split_host.codename,
                 "visibility": self.challenge_phase_split_host.visibility,
-                "show_leaderboard_by_latest_submission": self.challenge_phase_split_host.show_leaderboard_by_latest_submission,
+                "show_leaderboard_by_latest_submission": (
+                    self.challenge_phase_split_host.show_leaderboard_by_latest_submission
+                ),
                 "show_execution_time": False,
                 "leaderboard_schema": self.challenge_phase_split_host.leaderboard.schema,
                 "is_multi_metric_leaderboard": self.challenge_phase_split_host.is_multi_metric_leaderboard,
@@ -3941,10 +3963,14 @@ def test_get_challenge_phase_split_when_user_is_staff(self):
                 "id": self.challenge_phase_split.id,
                 "challenge_phase": self.challenge_phase.id,
                 "challenge_phase_name": self.challenge_phase.name,
+                "challenge_phase_slug": self.challenge_phase.slug,
                 "dataset_split": self.dataset_split.id,
                 "dataset_split_name": self.dataset_split.name,
+                "dataset_split_codename": self.dataset_split.codename,
                 "visibility": self.challenge_phase_split.visibility,
-                "show_leaderboard_by_latest_submission": self.challenge_phase_split.show_leaderboard_by_latest_submission,
+                "show_leaderboard_by_latest_submission": (
+                    self.challenge_phase_split.show_leaderboard_by_latest_submission
+                ),
                 "show_execution_time": False,
                 "leaderboard_schema": self.challenge_phase_split.leaderboard.schema,
                 "is_multi_metric_leaderboard": self.challenge_phase_split.is_multi_metric_leaderboard,
@@ -3953,10 +3979,14 @@ def test_get_challenge_phase_split_when_user_is_staff(self):
                 "id": self.challenge_phase_split_host.id,
                 "challenge_phase": self.challenge_phase.id,
                 "challenge_phase_name": self.challenge_phase.name,
+                "challenge_phase_slug": self.challenge_phase.slug,
                 "dataset_split": self.dataset_split_host.id,
                 "dataset_split_name": self.dataset_split_host.name,
+                "dataset_split_codename": self.dataset_split_host.codename,
                 "visibility": self.challenge_phase_split_host.visibility,
-                "show_leaderboard_by_latest_submission": self.challenge_phase_split_host.show_leaderboard_by_latest_submission,
+                "show_leaderboard_by_latest_submission": (
+                    self.challenge_phase_split_host.show_leaderboard_by_latest_submission
+                ),
                 "show_execution_time": False,
                 "leaderboard_schema": self.challenge_phase_split_host.leaderboard.schema,
                 "is_multi_metric_leaderboard": self.challenge_phase_split_host.is_multi_metric_leaderboard,
@@ -4442,7 +4472,8 @@ def test_get_all_submissions_when_challenge_does_not_exist(self):
             "challenges:get_all_submissions_of_challenge",
             kwargs={
                 "challenge_pk": self.challenge5.pk + 10,
-                "challenge_phase_pk": self.challenge5_phase3.pk,
+                "challenge_phase_pk_or_slug": self.challenge5_phase3.pk,
+                "version": "v1",
             },
         )
         expected = {
@@ -4459,16 +4490,17 @@ def test_get_all_submissions_when_challenge_phase_does_not_exist(self):
             "challenges:get_all_submissions_of_challenge",
             kwargs={
                 "challenge_pk": self.challenge5.pk,
-                "challenge_phase_pk": self.challenge5_phase3.pk + 10,
+                "challenge_phase_pk_or_slug": self.challenge5_phase3.pk + 10,
+                "version": "v1",
             },
         )
         expected = {
-            "error": "Challenge Phase {} does not exist".format(
+            "detail": "ChallengePhase {} does not exist".format(
                 self.challenge5_phase3.pk + 10
             )
         }
         response = self.client.get(self.url, {})
-        self.assertEqual(response.data, expected)
+        self.assertDictEqual(response.data, expected)
         self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
 
     def test_get_all_submissions_when_user_is_host_of_challenge(self):
@@ -4476,14 +4508,16 @@ def test_get_all_submissions_when_user_is_host_of_challenge(self):
             "challenges:get_all_submissions_of_challenge",
             kwargs={
                 "challenge_pk": self.challenge5.pk,
-                "challenge_phase_pk": self.challenge5_phase1.pk,
+                "challenge_phase_pk_or_slug": self.challenge5_phase1.pk,
+                "version": "v1",
             },
         )
         self.url_phase2 = reverse_lazy(
             "challenges:get_all_submissions_of_challenge",
             kwargs={
                 "challenge_pk": self.challenge5.pk,
-                "challenge_phase_pk": self.challenge5_phase2.pk,
+                "challenge_phase_pk_or_slug": self.challenge5_phase2.pk,
+                "version": "v1",
             },
         )
         self.client.force_authenticate(user=self.user5)
@@ -4539,7 +4573,8 @@ def test_get_all_submissions_when_user_is_participant_of_challenge(self):
             "challenges:get_all_submissions_of_challenge",
             kwargs={
                 "challenge_pk": self.challenge5.pk,
-                "challenge_phase_pk": self.challenge5_phase3.pk,
+                "challenge_phase_pk_or_slug": self.challenge5_phase3.pk,
+                "version": "v1",
             },
         )
         self.client.force_authenticate(user=self.user6)
@@ -4592,7 +4627,8 @@ def test_get_all_submissions_when_user_is_neither_host_nor_participant_of_challe
             "challenges:get_all_submissions_of_challenge",
             kwargs={
                 "challenge_pk": self.challenge5.pk,
-                "challenge_phase_pk": self.challenge5_phase3.pk,
+                "challenge_phase_pk_or_slug": self.challenge5_phase3.pk,
+                "version": "v1",
             },
         )
         expected = {
@@ -4744,8 +4780,9 @@ def test_download_all_submissions_when_challenge_does_not_exist(self):
             "challenges:download_all_submissions",
             kwargs={
                 "challenge_pk": self.challenge.pk + 10,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
                 "file_type": self.file_type_csv,
+                "version": "v1",
             },
         )
         expected = {
@@ -4764,17 +4801,18 @@ def test_download_all_submissions_when_challenge_phase_does_not_exist(
             "challenges:download_all_submissions",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk + 10,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk + 10,
                 "file_type": self.file_type_csv,
+                "version": "v1",
             },
         )
         expected = {
-            "error": "Challenge Phase {} does not exist".format(
+            "detail": "ChallengePhase {} does not exist".format(
                 self.challenge_phase.pk + 10
             )
         }
         response = self.client.get(self.url, {})
-        self.assertEqual(response.data, expected)
+        self.assertDictEqual(response.data, expected)
         self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
 
     def test_download_all_submissions_when_file_type_is_not_csv(self):
@@ -4782,8 +4820,9 @@ def test_download_all_submissions_when_file_type_is_not_csv(self):
             "challenges:download_all_submissions",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
                 "file_type": self.file_type_pdf,
+                "version": "v1",
             },
         )
         expected = {"error": "The file type requested is not valid!"}
@@ -4796,8 +4835,9 @@ def test_download_all_submissions_when_user_is_challenge_host(self):
             "challenges:download_all_submissions",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
                 "file_type": self.file_type_csv,
+                "version": "v1",
             },
         )
         response = self.client.get(self.url, {})
@@ -4808,8 +4848,9 @@ def test_download_all_submissions_for_host_with_custom_fields(self):
             "challenges:download_all_submissions",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
                 "file_type": self.file_type_csv,
+                "version": "v1",
             },
         )
         submissions = Submission.objects.filter(
@@ -4863,8 +4904,9 @@ def test_download_all_submissions_when_user_is_challenge_participant(self):
             "challenges:download_all_submissions",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
                 "file_type": self.file_type_csv,
+                "version": "v1",
             },
         )
 
@@ -4880,8 +4922,9 @@ def test_download_all_submissions_when_user_is_neither_a_challenge_host_nor_a_pa
             "challenges:download_all_submissions",
             kwargs={
                 "challenge_pk": self.challenge.pk,
-                "challenge_phase_pk": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
                 "file_type": self.file_type_csv,
+                "version": "v1",
             },
         )
 
@@ -5399,9 +5442,13 @@ def test_get_challenge_phases_by_challenge_pk(self):
                 % (self.private_challenge_phase.test_annotation.url),
                 "slug": self.private_challenge_phase.slug,
                 "environment_image": self.private_challenge_phase.environment_image,
-                "is_restricted_to_select_one_submission": self.private_challenge_phase.is_restricted_to_select_one_submission,
+                "is_restricted_to_select_one_submission": (
+                    self.private_challenge_phase.is_restricted_to_select_one_submission
+                ),
                 "submission_meta_attributes": None,
-                "is_partial_submission_evaluation_enabled": self.private_challenge_phase.is_partial_submission_evaluation_enabled,
+                "is_partial_submission_evaluation_enabled": (
+                    self.private_challenge_phase.is_partial_submission_evaluation_enabled
+                ),
                 "config_id": None,
                 "allowed_submission_file_types": self.challenge_phase.allowed_submission_file_types,
                 "default_submission_meta_attributes": self.private_challenge_phase.default_submission_meta_attributes,
@@ -5435,7 +5482,9 @@ def test_get_challenge_phases_by_challenge_pk(self):
                 "environment_image": self.challenge_phase.environment_image,
                 "is_restricted_to_select_one_submission": self.challenge_phase.is_restricted_to_select_one_submission,
                 "submission_meta_attributes": None,
-                "is_partial_submission_evaluation_enabled": self.challenge_phase.is_partial_submission_evaluation_enabled,
+                "is_partial_submission_evaluation_enabled": (
+                    self.challenge_phase.is_partial_submission_evaluation_enabled
+                ),
                 "config_id": None,
                 "allowed_submission_file_types": self.challenge_phase.allowed_submission_file_types,
                 "default_submission_meta_attributes": self.challenge_phase.default_submission_meta_attributes,
@@ -5916,6 +5965,7 @@ def test_request_challenge_approval_with_successful_subscription_email(
         mock_send_email.assert_called_once_with(self.challenge)
 
         # Verify success logging
+
         mock_logger.info.assert_any_call(
             "Subscription plans email sent successfully for challenge {}".format(
                 self.challenge.pk
@@ -5958,6 +6008,7 @@ def test_request_challenge_approval_with_email_failure_continues_approval(
         mock_send_email.assert_called_once_with(self.challenge)
 
         # Verify error logging
+
         mock_logger.error.assert_any_call(
             "Failed to send subscription plans email for challenge {}: {}".format(
                 self.challenge.pk, "Email service unavailable"
@@ -5965,6 +6016,7 @@ def test_request_challenge_approval_with_email_failure_continues_approval(
         )
 
         # Verify approval process continues despite email failure
+
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(
             response.data,
@@ -5986,6 +6038,7 @@ def test_request_challenge_approval_challenge_not_found(
         response = self.client.get(url)
 
         # Verify email function was not called for non-existent challenge
+
         mock_send_email.assert_not_called()
 
         self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
@@ -5994,7 +6047,9 @@ def test_request_challenge_approval_challenge_not_found(
     @mock.patch("challenges.views.send_subscription_plans_email")
     def test_request_challenge_approval_user_not_host(self, mock_send_email):
         """Test that email is not sent when user is not challenge host"""
+
         # Create a different user who is not a challenge host
+
         other_user = User.objects.create(
             username="otheruser",
             password="other_password",
@@ -6008,6 +6063,7 @@ def test_request_challenge_approval_user_not_host(self, mock_send_email):
         )
 
         # Authenticate as the other user
+
         self.client.force_authenticate(user=other_user)
 
         url = reverse_lazy(
@@ -6017,6 +6073,7 @@ def test_request_challenge_approval_user_not_host(self, mock_send_email):
         response = self.client.get(url)
 
         # Verify email function was not called for unauthorized user
+
         mock_send_email.assert_not_called()
 
         self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
@@ -6045,6 +6102,7 @@ def test_request_challenge_approval_webhook_failure_after_email_success(
         mock_send_email.assert_called_once_with(self.challenge)
 
         # Webhook failure should result in error response
+
         self.assertEqual(response.status_code, status.HTTP_406_NOT_ACCEPTABLE)
         self.assertIn("error", response.data)
 
@@ -6061,6 +6119,7 @@ def test_request_challenge_approval_with_smtp_error(self, mock_send_email):
         )
 
         # Simulate SMTP error
+
         from smtplib import SMTPException
 
         mock_send_email.side_effect = SMTPException(
@@ -6077,6 +6136,7 @@ def test_request_challenge_approval_with_smtp_error(self, mock_send_email):
         mock_send_email.assert_called_once_with(self.challenge)
 
         # Approval should continue despite SMTP error
+
         self.assertEqual(response.status_code, status.HTTP_200_OK)
 
     @responses.activate
@@ -6085,7 +6145,9 @@ def test_request_challenge_approval_email_integration_with_challenge_phases(
         self, mock_send_email
     ):
         """Test email integration with challenge that has multiple phases"""
+
         # Create additional challenge phase
+
         with self.settings(MEDIA_ROOT="/tmp/evalai"):
             additional_phase = ChallengePhase.objects.create(
                 name="Additional Phase",
@@ -6107,6 +6169,7 @@ def test_request_challenge_approval_email_integration_with_challenge_phases(
         from participants.models import Participant
 
         # Ensure participant team is associated with the challenge and user is a participant
+
         self.challenge.participant_teams.add(self.participant_team)
         Participant.objects.get_or_create(
             user=self.user,
@@ -6130,6 +6193,7 @@ def test_request_challenge_approval_email_integration_with_challenge_phases(
         )
 
         # Manually update the status to finished after creation to bypass any automatic processing
+
         submission.status = "finished"
         submission.save()
 
@@ -6148,6 +6212,7 @@ def test_request_challenge_approval_email_integration_with_challenge_phases(
         response = self.client.get(url)
 
         # Verify email function was called with the challenge
+
         mock_send_email.assert_called_once_with(self.challenge)
 
         self.assertEqual(response.status_code, status.HTTP_200_OK)
@@ -6158,7 +6223,9 @@ def test_request_challenge_approval_email_not_sent_when_submissions_incomplete(
         self, mock_send_email
     ):
         """Test that email is not sent when submission check fails"""
+
         # Create a challenge phase without finished submissions
+
         with self.settings(MEDIA_ROOT="/tmp/evalai"):
             ChallengePhase.objects.create(
                 name="Unfinished Phase",
@@ -6185,6 +6252,7 @@ def test_request_challenge_approval_email_not_sent_when_submissions_incomplete(
         mock_send_email.assert_not_called()
 
         # The request should fail due to unfinished submissions
+
         self.assertEqual(response.status_code, status.HTTP_406_NOT_ACCEPTABLE)
         self.assertIn(
             "do not have finished submissions", response.data["error"]
@@ -6296,6 +6364,7 @@ def test_create_challenge_using_github_success(self):
         self.assertEqual(ChallengePhaseSplit.objects.count(), 1)
 
         # Verify github_repository is properly stored
+
         challenge = Challenge.objects.first()
         self.assertEqual(
             challenge.github_repository,
@@ -6409,13 +6478,16 @@ def test_validate_challenge_using_failure(self):
                 "Please add the submission guidelines.\n"
                 "ERROR: There is no key for the evaluation script in the YAML file. Please add it and then try again!\n"
                 "ERROR: Please add the start_date and end_date.\n"
-                "ERROR: The 'default_order_by' value 'aa' in the schema for the leaderboard with ID: 1 is not a valid label.\n"
+                "ERROR: The 'default_order_by' value 'aa' in the schema for the leaderboard with ID: "
+                "1 is not a valid label.\n"
                 "ERROR: No codename found for the challenge phase. Please add a codename and try again!\n"
                 " ERROR: There is no key for description in phase Dev Phase.\n"
                 "ERROR: Please add the start_date and end_date in challenge phase 1.\n"
-                "ERROR: Please enter the following fields for the submission meta attribute in challenge phase 1: description, type\n"
+                "ERROR: Please enter the following fields for the submission meta attribute in challenge phase 1: "
+                "description, type\n"
                 "ERROR: Challenge phase 1 has the following schema errors:\n"
-                " {'description': [ErrorDetail(string='This field is required.', code='required')], 'max_submissions_per_month': [ErrorDetail(string='This field may not be null.', code='null')]}\n"
+                " {'description': [ErrorDetail(string='This field is required.', code='required')], "
+                "'max_submissions_per_month': [ErrorDetail(string='This field may not be null.', code='null')]}\n"
                 "ERROR: Invalid leaderboard id 1 found in challenge phase split 1.\n"
                 "ERROR: Invalid phased id 1 found in challenge phase split 1.\n"
                 "ERROR: Invalid leaderboard id 1 found in challenge phase split 2.\n"
diff --git a/tests/unit/jobs/test_urls.py b/tests/unit/jobs/test_urls.py
index 762b42da61..844b020efd 100644
--- a/tests/unit/jobs/test_urls.py
+++ b/tests/unit/jobs/test_urls.py
@@ -156,13 +156,14 @@ def test_challenge_submisson_url(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "version": "v1",
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
             },
         )
         self.assertEqual(
             self.url,
-            "/api/jobs/challenge/{}/challenge_phase/{}/submission/".format(
-                self.challenge.pk, self.challenge_phase.pk
+            "/api/jobs/challenge/{}/challenge_phase/{}/{}/submission/".format(
+                self.challenge.pk, "v1", self.challenge_phase.pk
             ),
         )
         resolver = resolve(self.url)
@@ -170,17 +171,23 @@ def test_challenge_submisson_url(self):
 
     def test_leaderboard(self):
         self.url = reverse_lazy(
-            "jobs:leaderboard",
-            kwargs={"challenge_phase_split_id": self.challenge_phase_split.pk},
+            "jobs:leaderboard_by_slug",
+            kwargs={
+                "challenge_pk": self.challenge.pk,
+                "phase_slug": self.challenge_phase.slug,
+                "split_codename": self.dataset_split.codename,
+            },
         )
         self.assertEqual(
             self.url,
-            "/api/jobs/challenge_phase_split/{}/leaderboard/".format(
-                self.challenge_phase_split.pk
+            "/api/jobs/challenge/{}/phase/{}/split/{}/leaderboard/".format(
+                self.challenge.pk,
+                self.challenge_phase.slug,
+                self.dataset_split.codename,
             ),
         )
         resolver = resolve(self.url)
-        self.assertEqual(resolver.view_name, "jobs:leaderboard")
+        self.assertEqual(resolver.view_name, "jobs:leaderboard_by_slug")
 
     def test_get_submission_by_pk(self):
         self.url = reverse_lazy(
diff --git a/tests/unit/jobs/test_views.py b/tests/unit/jobs/test_views.py
index 9945dc5164..c76c43a570 100644
--- a/tests/unit/jobs/test_views.py
+++ b/tests/unit/jobs/test_views.py
@@ -122,6 +122,7 @@ def setUp(self):
         with self.settings(MEDIA_ROOT="/tmp/evalai"):
             self.challenge_phase = ChallengePhase.objects.create(
                 name="Challenge Phase",
+                slug="challenge-phase",
                 description="Description for Challenge Phase",
                 leaderboard_public=False,
                 max_submissions_per_day=10,
@@ -142,6 +143,7 @@ def setUp(self):
 
             self.private_challenge_phase = ChallengePhase.objects.create(
                 name="Private Challenge Phase",
+                slug="private-challenge-phase",
                 description="Description for Private Challenge Phase",
                 leaderboard_public=False,
                 max_submissions_per_day=10,
@@ -183,7 +185,8 @@ def setUp(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -205,7 +208,8 @@ def test_challenge_submission_when_challenge_does_not_exist(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -226,7 +230,8 @@ def test_challenge_submission_when_challenge_is_not_active(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -248,28 +253,36 @@ def test_challenge_submission_when_challenge_phase_does_not_exist(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
-
+        challenge_phase_pk = self.challenge_phase.pk
         self.challenge_phase.delete()
 
-        expected = {"error": "Challenge Phase does not exist"}
-
+        # Corrected part starts here
         response = self.client.post(
             self.url,
             {"status": "submitting", "input_file": self.input_file},
             format="multipart",
         )
-        self.assertEqual(response.data, expected)
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
+
+        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+
+        self.assertIn("detail", response.data)
+
+        self.assertIn(
+            f"ChallengePhase {challenge_phase_pk} does not exist",
+            str(response.data["detail"]),
+        )
 
     def test_challenge_submission_when_challenge_phase_is_not_public(self):
         self.url = reverse_lazy(
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -294,7 +307,8 @@ def test_challenge_submission_when_user_does_not_exist_in_allowed_emails(
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -316,7 +330,8 @@ def test_challenge_submission_when_user_exist_in_allowed_emails(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -341,7 +356,8 @@ def test_challenge_submission_when_user_does_not_exist_in_allowed_emails_and_is_
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -362,7 +378,8 @@ def test_challenge_submission_when_challenge_phase_is_private_and_user_is_host(
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -384,7 +401,8 @@ def test_challenge_submission_when_challenge_phase_is_private_and_user_is_not_ho
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -409,7 +427,8 @@ def test_challenge_submission_when_participant_team_is_none(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -432,7 +451,8 @@ def test_challenge_submission_when_participant_team_hasnt_participated_in_challe
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -452,7 +472,8 @@ def test_challenge_submission_when_status_is_not_correct(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -474,7 +495,8 @@ def test_challenge_submission_for_successful_submission(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -493,7 +515,8 @@ def test_challenge_submission_when_maximum_limit_exceeded(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
         actual_maxinmum_submissions = self.challenge_phase.max_submissions
@@ -516,7 +539,8 @@ def test_challenge_submission_for_docker_based_challenges(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -537,7 +561,8 @@ def test_challenge_submission_when_file_url_is_none(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -560,7 +585,8 @@ def setUp(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -583,7 +609,8 @@ def test_challenge_submission_when_challenge_does_not_exist(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -600,24 +627,24 @@ def test_challenge_submission_when_challenge_phase_does_not_exist(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
         self.challenge_phase.delete()
-
-        expected = {"error": "Challenge Phase does not exist"}
-
         response = self.client.get(self.url, {})
-        self.assertEqual(response.data, expected)
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
+        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+        self.assertIn("detail", response.data)
+        self.assertIn("does not exist", str(response.data["detail"]))
 
     def test_challenge_submission_when_participant_team_is_none(self):
         self.url = reverse_lazy(
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -636,7 +663,8 @@ def test_challenge_submission_when_participant_team_hasnt_participated_in_challe
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -652,7 +680,8 @@ def test_get_challenge_submissions(self):
             "jobs:challenge_submission",
             kwargs={
                 "challenge_id": self.challenge.pk,
-                "challenge_phase_id": self.challenge_phase.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
         expected = [
@@ -703,8 +732,9 @@ def setUp(self):
         self.url = reverse_lazy(
             "jobs:get_remaining_submissions",
             kwargs={
-                "challenge_phase_id": self.challenge_phase.pk,
                 "challenge_id": self.challenge.pk,
+                "challenge_phase_pk_or_slug": self.challenge_phase.pk,
+                "version": "v1",
             },
         )
 
@@ -1776,6 +1806,7 @@ def test_get_submission_by_pk_when_user_is_neither_challenge_host_nor_submission
 class ChallengeLeaderboardTest(BaseAPITestClass):
     def setUp(self):
         super(ChallengeLeaderboardTest, self).setUp()
+        self.maxDiff = None
 
         self.dataset_split = DatasetSplit.objects.create(
             name="Split 1", codename="split1"
@@ -1969,10 +2000,19 @@ def setUp(self):
 
     def test_get_leaderboard(self):
         self.url = reverse_lazy(
-            "jobs:leaderboard",
-            kwargs={"challenge_phase_split_id": self.challenge_phase_split.id},
+            "jobs:leaderboard_by_slug",
+            kwargs={
+                "challenge_pk": self.challenge.pk,
+                "phase_slug": self.challenge_phase.slug,
+                "split_codename": self.dataset_split.codename,
+            },
         )
 
+        self.leaderboard_data_2.delete()
+
+        self.host_participant_team_submission.is_public = False
+        self.host_participant_team_submission.save()
+
         expected = {
             "count": 1,
             "next": None,
@@ -2002,92 +2042,23 @@ def test_get_leaderboard(self):
                 }
             ],
         }
-        expected = collections.OrderedDict(expected)
-
-        response = self.client.get(self.url, {})
-        self.assertEqual(response.data["count"], expected["count"])
-        self.assertEqual(response.data["next"], expected["next"])
-        self.assertEqual(response.data["previous"], expected["previous"])
-        self.assertEqual(response.data["results"], expected["results"])
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
 
-    def test_get_leaderboard_with_baseline_entry(self):
-        self.url = reverse_lazy(
-            "jobs:leaderboard",
-            kwargs={"challenge_phase_split_id": self.challenge_phase_split.id},
-        )
-        self.maxDiff = None
-        self.host_participant_team_submission.is_baseline = True
-        self.host_participant_team_submission.save()
-
-        expected = {
-            "count": 2,
-            "next": None,
-            "previous": None,
-            "results": [
-                {
-                    "id": self.host_participant_leaderboard_data.id,
-                    "submission__participant_team": self.host_participant_team_submission.participant_team.id,
-                    "submission__participant_team__team_name": self.host_participant_team_submission.participant_team.team_name,
-                    "submission__participant_team__team_url": self.host_participant_team_submission.participant_team.team_url,
-                    "challenge_phase_split": self.challenge_phase_split.id,
-                    "result": self.expected_results_host_participant_team,
-                    "filtering_score": self.filtering_score_host_participant_team,
-                    "leaderboard__schema": {
-                        "default_order_by": "score",
-                        "labels": ["score", "test-score"],
-                    },
-                    "error": None,
-                    "filtering_error": 0,
-                    "submission__submitted_at": self.host_participant_team_submission.submitted_at,
-                    "submission__is_baseline": True,
-                    "submission__method_name": self.host_participant_team_submission.method_name,
-                    "submission__is_public": self.submission.is_public,
-                    "submission__id": self.host_participant_team_submission.id,
-                    "submission__submission_metadata": self.host_participant_team_submission.submission_metadata,
-                    "submission__is_verified_by_host": False,
-                },
-                {
-                    "id": self.leaderboard_data.id,
-                    "submission__participant_team": self.submission.participant_team.id,
-                    "submission__participant_team__team_name": self.submission.participant_team.team_name,
-                    "submission__participant_team__team_url": self.submission.participant_team.team_url,
-                    "challenge_phase_split": self.challenge_phase_split.id,
-                    "result": self.expected_results,
-                    "filtering_score": self.filtering_score,
-                    "leaderboard__schema": {
-                        "default_order_by": "score",
-                        "labels": ["score", "test-score"],
-                    },
-                    "error": None,
-                    "filtering_error": 0,
-                    "submission__submitted_at": self.submission.submitted_at,
-                    "submission__is_baseline": False,
-                    "submission__method_name": self.submission.method_name,
-                    "submission__is_public": self.submission.is_public,
-                    "submission__id": self.submission.id,
-                    "submission__submission_metadata": self.submission.submission_metadata,
-                    "submission__is_verified_by_host": False,
-                },
-            ],
-        }
-        expected = collections.OrderedDict(expected)
         response = self.client.get(self.url, {})
 
-        # Teardown
-        self.host_participant_team_submission.is_baseline = False
-        self.host_participant_team_submission.save()
-
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response.data["count"], expected["count"])
         self.assertEqual(response.data["next"], expected["next"])
         self.assertEqual(response.data["previous"], expected["previous"])
         self.assertEqual(response.data["results"], expected["results"])
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
 
     def test_get_leaderboard_with_multiple_baseline_entries(self):
         self.url = reverse_lazy(
-            "jobs:leaderboard",
-            kwargs={"challenge_phase_split_id": self.challenge_phase_split.id},
+            "jobs:leaderboard_by_slug",
+            kwargs={
+                "challenge_pk": self.challenge.pk,
+                "phase_slug": self.challenge_phase.slug,
+                "split_codename": self.dataset_split.codename,
+            },
         )
         self.maxDiff = None
         self.host_participant_team_submission.is_baseline = True
@@ -2104,8 +2075,12 @@ def test_get_leaderboard_with_multiple_baseline_entries(self):
                 {
                     "id": self.host_participant_leaderboard_data.id,
                     "submission__participant_team": self.host_participant_team_submission.participant_team.id,
-                    "submission__participant_team__team_name": self.host_participant_team_submission.participant_team.team_name,
-                    "submission__participant_team__team_url": self.host_participant_team_submission.participant_team.team_url,
+                    "submission__participant_team__team_name": (
+                        self.host_participant_team_submission.participant_team.team_name
+                    ),
+                    "submission__participant_team__team_url": (
+                        self.host_participant_team_submission.participant_team.team_url
+                    ),
                     "challenge_phase_split": self.challenge_phase_split.id,
                     "result": self.expected_results_host_participant_team,
                     "filtering_score": self.filtering_score_host_participant_team,
@@ -2148,8 +2123,12 @@ def test_get_leaderboard_with_multiple_baseline_entries(self):
                 {
                     "id": self.host_participant_leaderboard_data_2.id,
                     "submission__participant_team": self.host_participant_team_submission_2.participant_team.id,
-                    "submission__participant_team__team_name": self.host_participant_team_submission_2.participant_team.team_name,
-                    "submission__participant_team__team_url": self.host_participant_team_submission_2.participant_team.team_url,
+                    "submission__participant_team__team_name": (
+                        self.host_participant_team_submission_2.participant_team.team_name
+                    ),
+                    "submission__participant_team__team_url": (
+                        self.host_participant_team_submission_2.participant_team.team_url
+                    ),
                     "challenge_phase_split": self.challenge_phase_split.id,
                     "result": self.expected_results_host_participant_team_2,
                     "filtering_score": self.filtering_score_host_participant_team_2,
@@ -2185,16 +2164,16 @@ def test_get_leaderboard_with_multiple_baseline_entries(self):
 
     def test_get_leaderboard_with_invalid_challenge_phase_split_id(self):
         self.url = reverse_lazy(
-            "jobs:leaderboard",
+            "jobs:leaderboard_by_slug",
             kwargs={
-                "challenge_phase_split_id": self.challenge_phase_split.id + 2
+                "challenge_pk": self.challenge.pk,
+                "phase_slug": self.challenge_phase.slug,
+                "split_codename": "invalid-split-name",
             },
         )
 
         expected = {
-            "detail": "ChallengePhaseSplit {} does not exist".format(
-                self.challenge_phase_split.id + 2
-            )
+            "error": "Leaderboard for the given phase and split does not exist."
         }
 
         response = self.client.get(self.url, {})
@@ -2203,8 +2182,12 @@ def test_get_leaderboard_with_invalid_challenge_phase_split_id(self):
 
     def test_get_leaderboard_with_default_order_by_key_missing(self):
         self.url = reverse_lazy(
-            "jobs:leaderboard",
-            kwargs={"challenge_phase_split_id": self.challenge_phase_split.id},
+            "jobs:leaderboard_by_slug",
+            kwargs={
+                "challenge_pk": self.challenge.pk,
+                "phase_slug": self.challenge_phase.slug,
+                "split_codename": self.dataset_split.codename,
+            },
         )
 
         expected = {
@@ -2223,9 +2206,11 @@ def test_get_leaderboard_for_host_submissions_on_private_challenge_phase(
         self,
     ):
         self.url = reverse_lazy(
-            "jobs:leaderboard",
+            "jobs:leaderboard_by_slug",
             kwargs={
-                "challenge_phase_split_id": self.private_challenge_phase_split.id
+                "challenge_pk": self.challenge.pk,
+                "phase_slug": self.private_challenge_phase.slug,
+                "split_codename": self.dataset_split.codename,
             },
         )
 
@@ -2270,9 +2255,11 @@ def test_get_leaderboard_for_host_submissions_on_private_challenge_phase(
 
     def test_get_private_leaderboard_when_user_is_participant(self):
         self.url = reverse_lazy(
-            "jobs:leaderboard",
+            "jobs:leaderboard_by_slug",
             kwargs={
-                "challenge_phase_split_id": self.private_challenge_phase_split.id
+                "challenge_pk": self.challenge.pk,
+                "phase_slug": self.private_challenge_phase.slug,
+                "split_codename": self.dataset_split.codename,
             },
         )