Update app.py

app.py

@@ -733,7 +733,7 @@ def server(input, output, session):
                 values="pitcher_total",
                 index="pitcher_id",
                 columns="batter_hand",
-                aggregate_function="first"
+                aggregate_function="sum"
             )
             .rename({"L": "pitcher_total_left", "R": "pitcher_total_right"})
             .fill_null(0)  # Fill missing values with 0 if some pitchers don't face both hands