diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index 930ffeb700f..4b79765d304 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -242,7 +242,9 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       this.shiny = false;
     }
 
-    this.calculateStats();
+    if (!dataSource) {
+      this.calculateStats();
+    }
   }