diff --git a/insalan/tournament/models.py b/insalan/tournament/models.py
index 47477dfa..732ee97f 100644
--- a/insalan/tournament/models.py
+++ b/insalan/tournament/models.py
@@ -469,12 +469,11 @@ def unique_registration(users: Union[User, List[User]]):
         for user in users:
             unique_registration(user)
     else:
-        e_regs = [obj.team.tournament.event for obj in Player.objects.filter(user=users)] + \
-                 [obj.team.tournament.event for obj in Manager.objects.filter(user=users)]
-        if (len(e_regs) != len(set(e_regs))):
-            raise serializers.ValidationError(
-                _("Utilisateur⋅rice déjà inscrit⋅e dans un tournoi de cet évènement")
-            )
+        e_regs = Event.objects.filter(tournament__team__player__user=users).union(Event.objects.filter(tournament__team__manager__user=users))
+        if len(e_regs) > 0:
+            return False
+        else:
+            return True
 
 
 class Player(models.Model):
@@ -493,7 +492,7 @@ class Meta:
         User,
         on_delete=models.CASCADE,
         verbose_name=_("Utilisateur⋅ice"),
-        validators=[player_manager_user_unique_validator,unique_registration],
+        #validators=[player_manager_user_unique_validator,unique_registration],
     )
     team = models.ForeignKey(
         "tournament.Team",
@@ -545,26 +544,32 @@ def clean(self):
         Assert that the user associated with the provided player does not already
         exist in any team of any tournament of the event
         """
-        event = self.get_team().get_tournament().get_event()
-
-        if (
-            len(
-                [
-                    player.user
-                    for players in [
-                        team.get_players()
-                        for teams in [
-                            trnm.get_teams() for trnm in event.get_tournaments()
-                        ]
-                        for team in teams
-                    ]
-                    for player in players
-                    if player.user == self.user
-                ]
+        if not unique_registration(self.user):
+            raise ValidationError(
+                _("Utilisateur⋅rice déjà inscrit⋅e dans un tournoi de cet évènement")
             )
-            > 1
-        ):
-            raise ValidationError(_("Joueur⋅euse déjà inscrit⋅e pour cet évènement"))
+
+        # event = self.get_team().get_tournament().get_event()
+        # raise ValidationError("test2")
+
+        # if (
+        #     len(
+        #         [
+        #             player.user
+        #             for players in [
+        #                 team.get_players()
+        #                 for teams in [
+        #                     trnm.get_teams() for trnm in event.get_tournaments()
+        #                 ]
+        #                 for team in teams
+        #             ]
+        #             for player in players
+        #             if player.user == self.user
+        #         ]
+        #     )
+        #     > 0
+        # ):
+        #     raise ValidationError(_("Joueur⋅euse déjà inscrit⋅e pour cet évènement"))
 
 
 class Manager(models.Model):
diff --git a/insalan/tournament/serializers.py b/insalan/tournament/serializers.py
index eeb534c1..47bad69c 100644
--- a/insalan/tournament/serializers.py
+++ b/insalan/tournament/serializers.py
@@ -76,7 +76,7 @@ def to_representation(self, instance):
 class TeamSerializer(serializers.ModelSerializer):
     """Serializer class for Teams"""
 
-    players = serializers.ListField(required=False, source="get_players_id", validators=[unique_registration])
+    players = serializers.ListField(required=False, source="get_players_id")
     managers = serializers.ListField(required=False, source="get_managers_id", validators=[unique_registration])
     password = serializers.CharField(write_only=True)
     players_pseudos = serializers.ListField(required=False, write_only=True)
@@ -100,25 +100,15 @@ def create(self, validated_data):
             raise serializers.ValidationError(_("Il manque des pseudos de joueurs"))
 
         validated_data["password"] = make_password(validated_data["password"])
-        try:
-            team_obj = Team.objects.create(**validated_data)
-        except:
-            raise serializers.ValidationError(_("Erreur à la création de l'équipe"))
+        team_obj = Team.objects.create(**validated_data)
 
         for player, pseudo in zip(players,players_pseudos):
             user_obj = User.objects.get(id=player)
-            try:
-                Player.objects.create(user=user_obj, team=team_obj, pseudo=pseudo)
-            except:
-                raise serializers.ValidationError(_("Erreur à l'inscription du joueur"))
-            
+            Player.objects.create(user=user_obj, team=team_obj, pseudo=pseudo)
 
-        for manager, pseudo in zip(managers, managers_pseudos):
+        for manager in managers:
             user_obj = User.objects.get(id=manager)
-            try:
-                Manager.objects.create(user=user_obj, team=team_obj, pseudo=pseudo)
-            except:
-                raise serializers.ValidationError(_("Erreur à l'inscription du manager"))
+            Manager.objects.create(user=user_obj, team=team_obj)
 
         return team_obj
 
@@ -169,6 +159,13 @@ class Meta:
         model = Player
         fields = "__all__"
 
+    def validate_user(self, user):
+        if not unique_registration(user):
+            raise serializers.ValidationError(
+                _("Utilisateur⋅rice déjà inscrit⋅e dans un tournoi de cet évènement")
+            )
+        return user
+
 
 class PlayerIdSerializer(serializers.Serializer):
     """Serializer to verify a list of player IDs"""
diff --git a/insalan/tournament/views.py b/insalan/tournament/views.py
index 5841bceb..18f17b08 100644
--- a/insalan/tournament/views.py
+++ b/insalan/tournament/views.py
@@ -274,7 +274,7 @@ def post(self, request, *args, **kwargs):
                 }
             )
         
-        if check_password(data["password"], Team.objects.get(pk=data["team"]).get_password()):
+        if not check_password(data["password"], Team.objects.get(pk=data["team"]).get_password()):
             return Response(
                 { "password": _("Mot de passe invalide.")},
                 status=status.HTTP_400_BAD_REQUEST
@@ -354,7 +354,7 @@ def post(self, request, *args, **kwargs):
                 }
             )
 
-        if check_password(data["password"], Team.objects.get(pk=data["team"]).get_password()):
+        if not check_password(data["password"], Team.objects.get(pk=data["team"]).get_password()):
             return Response(
                 { "password": _("Mot de passe invalide.")},
                 status=status.HTTP_400_BAD_REQUEST