diff --git a/backend/bracket/logic/scheduling/handle_stage_activation.py b/backend/bracket/logic/scheduling/handle_stage_activation.py
index 476c1f3a..d11909ec 100644
--- a/backend/bracket/logic/scheduling/handle_stage_activation.py
+++ b/backend/bracket/logic/scheduling/handle_stage_activation.py
@@ -9,6 +9,7 @@ from bracket.logic.ranking.statistics import TeamStatistics
 from bracket.models.db.stage_item_inputs import StageItemInputFinal, StageItemInputTentative
 from bracket.models.db.team import Team
 from bracket.models.db.util import StageWithStageItems
+from bracket.sql.matches import clear_scores_for_matches_in_stage_item
 from bracket.sql.rankings import get_ranking_for_stage_item
 from bracket.sql.stage_item_inputs import (
     get_stage_item_input_by_id,
@@ -131,6 +132,8 @@ async def update_matches_in_deactivated_stage(
     Unsets the team_id for stage item inputs of the newly deactivated stage.
     """
     for stage_item in deactivated_stage.stage_items:
+        await clear_scores_for_matches_in_stage_item(tournament_id, stage_item.id)
+
         for stage_item_input in stage_item.inputs:
             if stage_item_input.winner_from_stage_item_id is not None:
                 await sql_set_team_id_for_stage_item_input(tournament_id, stage_item_input.id, None)
diff --git a/backend/bracket/sql/matches.py b/backend/bracket/sql/matches.py
index cee872ce..1a8a651b 100644
--- a/backend/bracket/sql/matches.py
+++ b/backend/bracket/sql/matches.py
@@ -5,7 +5,7 @@ from heliclockter import datetime_utc
 from bracket.database import database
 from bracket.models.db.match import Match, MatchBody, MatchCreateBody
 from bracket.models.db.tournament import Tournament
-from bracket.utils.id_types import CourtId, MatchId, StageItemId
+from bracket.utils.id_types import CourtId, MatchId, StageItemId, TournamentId
 
 
 async def sql_delete_match(match_id: MatchId) -> None:
@@ -197,3 +197,26 @@ async def sql_get_match(match_id: MatchId) -> Match:
         raise ValueError("Could not create stage")
 
     return Match.model_validate(dict(result._mapping))
+
+
+async def clear_scores_for_matches_in_stage_item(
+    tournament_id: TournamentId, stage_item_id: StageItemId
+) -> None:
+    query = """
+        UPDATE matches
+        SET stage_item_input1_score = 0,
+            stage_item_input2_score = 0
+        FROM rounds
+        JOIN stage_items ON rounds.stage_item_id = stage_items.id
+        JOIN stages ON stages.id = stage_items.stage_id
+        WHERE   rounds.id = matches.round_id
+            AND stages.tournament_id = :tournament_id
+            AND stage_items.id = :stage_item_id
+        """
+    await database.execute(
+        query=query,
+        values={
+            "stage_item_id": stage_item_id,
+            "tournament_id": tournament_id,
+        },
+    )