diff --git a/app/routers/stats.py b/app/routers/stats.py
index 4ce10e8..43dc829 100644
--- a/app/routers/stats.py
+++ b/app/routers/stats.py
@@ -141,6 +141,7 @@ def top_movers(
             - score_tracker[deck_id]["start_score"],
         }
         for deck_id in score_tracker
+        if "start_score" in score_tracker[deck_id]
     ]
     return {
         "positive": nlargest(number_of_movers, calculateds, key=lambda x: x["diff"]),