diff --git a/apps/participation/api/serializers.py b/apps/participation/api/serializers.py
index e9e8da0..6e87aa9 100644
--- a/apps/participation/api/serializers.py
+++ b/apps/participation/api/serializers.py
@@ -53,6 +53,8 @@ class TeamSerializer(serializers.ModelSerializer):
 
 
 class TournamentSerializer(serializers.ModelSerializer):
+    participations = serializers.ListSerializer(child=ParticipationSerializer())
+
     class Meta:
         model = Tournament
         fields = ('name', 'date_start', 'date_end', 'place', 'max_teams', 'price', 'remote',