diff --git a/src/filters/play_filters.py b/src/filters/play_filters.py
index ed1f4f6..2791b48 100644
--- a/src/filters/play_filters.py
+++ b/src/filters/play_filters.py
@@ -1,12 +1,18 @@
 from src.classes import play_classes, boardgame_classes
 
-def filter_out_expansion_plays(play_list: list[play_classes.Play]):
+def filter_expansions_out(play_list: list[play_classes.Play]):
     to_return_plays = []
 
     to_return_plays = list(filter(lambda x: x.expansion_id == None, play_list))
 
     return to_return_plays
 
+def filter_non_expansions_out(play_list: list[play_classes.Play]):
+    to_return_plays = []
+
+    to_return_plays = list(filter(lambda x: x.expansion_id != None, play_list))
+
+    return to_return_plays
 
 def filter_only_specific_boardgame(boardgame_id: int, play_list: list[play_classes.Play]):
     
diff --git a/src/main.py b/src/main.py
index 9de18f0..87b381f 100644
--- a/src/main.py
+++ b/src/main.py
@@ -61,29 +61,42 @@ def get_boardgame_by_id(id: int, session: Session = Depends(get_db_session)):
     return requested_boardgame
 
 @app.get("/owned", response_model=list[Union[boardgame_classes.OwnedBoardGame, boardgame_classes.OwnedBoardGameExpansion]])
-def get_owned_collection(filter_expansions_out: bool = False, only_expansions: bool = False, session: Session = Depends(get_db_session)):
+def get_owned_collection(query: ExpansionFilteringParams = Depends(), session: Session = Depends(get_db_session)):
     to_return_boardgames = data_connection.get_user_owned_collection(session)
 
-    if filter_expansions_out:
+    if query.filter_expansions_out:
         to_return_boardgames = boardgame_filters.filter_expansions_out(to_return_boardgames)
 
-    if only_expansions:
+    if query.only_expansions:
         to_return_boardgames = boardgame_filters.filter_non_expansions_out(to_return_boardgames)
 
     return to_return_boardgames
 
 
 @app.get("/wishlist", response_model=list[Union[boardgame_classes.WishlistBoardGame, boardgame_classes.WishlistBoardGameExpansion]])
-def get_wishlist_collection(priority: int = 0, session: Session = Depends(get_db_session)):
-    return data_connection.get_user_wishlist_collection(session, priority)
+def get_wishlist_collection(priority: int = 0, query: ExpansionFilteringParams = Depends(), session: Session = Depends(get_db_session)):
+
+    to_return_boardgames = data_connection.get_user_wishlist_collection(session, priority)
+
+    if query.filter_expansions_out:
+        to_return_boardgames = boardgame_filters.filter_expansions_out(to_return_boardgames)
+    
+    if query.only_expansions:
+        to_return_boardgames = boardgame_filters.filter_non_expansions_out(to_return_boardgames)
+
+    return to_return_boardgames
 
 
 @app.get("/plays", response_model=list[play_classes.PlayPublicWithPlayers])
-def get_plays(boardgame_id: int = -1, session: Session = Depends(get_db_session)):
+def get_plays(query: ExpansionFilteringParams = Depends(), boardgame_id: int = -1, session: Session = Depends(get_db_session)):
 
     requested_plays = data_connection.get_plays(session)
 
-    #requested_plays = play_filters.filter_out_expansion_plays(requested_plays)
+    if query.filter_expansions_out:
+        requested_plays = play_filters.filter_expansions_out(requested_plays)
+
+    if query.only_expansions:
+        requested_plays = play_filters.filter_non_expansions_out(requested_plays)
 
     if boardgame_id > -1:
         requested_plays = play_filters.filter_only_specific_boardgame(boardgame_id, requested_plays)
@@ -99,11 +112,18 @@ def get_players_from_play(play_id: int, session: Session = Depends(get_db_sessio
 
 
 @app.get('/statistics/amount_of_games', response_model=statistic_classes.NumberStatistic)
-def get_amount_of_games(session: Session = Depends(get_db_session)):
+def get_amount_of_games(query: ExpansionFilteringParams = Depends(), session: Session = Depends(get_db_session)):
+
+    owned_collection = data_connection.get_user_owned_collection(session)
+
+    if query.filter_expansions_out:
+        owned_collection = boardgame_filters.filter_expansions_out(owned_collection)
+    if query.only_expansions:
+        owned_collection = boardgame_filters.filter_non_expansions_out(owned_collection)
 
     statistic_dict = {
         "name":"Amount of games in owned collection",
-        "result":len(data_connection.get_user_owned_collection(session))
+        "result":len(owned_collection)
     }
 
     statistic_to_return = statistic_classes.NumberStatistic(**statistic_dict)
@@ -151,7 +171,10 @@ def get_amount_of_games_played_per_year(query: ExpansionFilteringParams = Depend
     all_plays.sort(key= lambda x: x.play_date)
 
     if query.filter_expansions_out:
-        all_plays = play_filters.filter_out_expansion_plays(all_plays)
+        all_plays = play_filters.filter_expansions_out(all_plays)
+
+    if query.only_expansions:
+        all_plays = play_filters.filter_non_expansions_out(all_plays)
 
 
     all_played_boardgame_ids = []
@@ -182,9 +205,15 @@ def get_amount_of_games_played_per_year(query: ExpansionFilteringParams = Depend
 
 
 @app.get('/statistics/most_expensive_games', response_model=statistic_classes.GameOrderStatistic)
-def get_most_expensive_game(top_amount: int = 10):
+def get_most_expensive_game(query: ExpansionFilteringParams = Depends(), top_amount: int = 10, session: Session = Depends(get_db_session)):
     
-    most_expensive_games: list[Union[boardgame_classes.OwnedBoardGame, boardgame_classes.OwnedBoardGameExpansion]] = data_connection.get_user_owned_collection()
+    most_expensive_games: list[Union[boardgame_classes.OwnedBoardGame, boardgame_classes.OwnedBoardGameExpansion]] = data_connection.get_user_owned_collection(session)
+
+    if query.filter_expansions_out:
+        most_expensive_games = boardgame_filters.filter_expansions_out(most_expensive_games)
+    
+    if query.only_expansions:
+        most_expensive_games = boardgame_filters.filter_non_expansions_out(most_expensive_games)
 
     most_expensive_games.sort(key=lambda x: x.price_paid, reverse=True)
 
diff --git a/src/modules/data_connection.py b/src/modules/data_connection.py
index 7163678..420e36f 100644
--- a/src/modules/data_connection.py
+++ b/src/modules/data_connection.py
@@ -18,7 +18,6 @@ def get_boardgame(session: Session, boardgame_type: SQLModel, boardgame_id: int)
         to_return_boardgame = boardgame_in_db
     else:
         to_return_boardgame = bgg_connection.get_boardgame(boardgame_id)
-        print(type(to_return_boardgame))
         db_connection.add_boardgame(session, to_return_boardgame)
         to_return_boardgame = db_connection.get_boardgame(session, boardgame_id)