diff --git a/sth-backend/src/main/java/hdm/mi/sthbackend/model/Team.java b/sth-backend/src/main/java/hdm/mi/sthbackend/model/Team.java
index a6a82441c09e3718444381e52e2f4b08df05071b..cb98022bb5354856db4d00fbb881f7f74a70068c 100644
--- a/sth-backend/src/main/java/hdm/mi/sthbackend/model/Team.java
+++ b/sth-backend/src/main/java/hdm/mi/sthbackend/model/Team.java
@@ -6,7 +6,6 @@ import org.springframework.data.annotation.Id;
 import org.springframework.data.mongodb.core.mapping.Document;
 
 import java.util.List;
-import java.util.Map;
 import java.util.UUID;
 
 @Getter
@@ -17,5 +16,5 @@ public class Team {
     private final UUID id;
 
     private final String teamName;
-    private final Map<UUID, Player> teamMembers;
+    private final List<UUID> teamMembers;
 }
diff --git a/sth-backend/src/main/java/hdm/mi/sthbackend/model/Tournament.java b/sth-backend/src/main/java/hdm/mi/sthbackend/model/Tournament.java
index 4d454729e662c2b7b302394666493278b8b7d813..c64e0735246ffe2afcdb20f6c3820e4af732a62c 100644
--- a/sth-backend/src/main/java/hdm/mi/sthbackend/model/Tournament.java
+++ b/sth-backend/src/main/java/hdm/mi/sthbackend/model/Tournament.java
@@ -20,5 +20,5 @@ public class Tournament implements ITournament{
 
     private List<Match> matches;
 
-    private Map<UUID, Team> teams;
+    private List<UUID> teams;
 }