diff --git a/src/arcaea_offline/calculate/world_step.py b/src/arcaea_offline/calculate/world_step.py
index f11e77e..de6e9fd 100644
--- a/src/arcaea_offline/calculate/world_step.py
+++ b/src/arcaea_offline/calculate/world_step.py
@@ -172,4 +172,4 @@ def calculate_play_rating_from_step(
     play_rating_sqrt = (Decimal(50) * step - Decimal("2.5") * partner_step_value) / (
         Decimal("2.45") * partner_step_value
     )
-    return play_rating_sqrt**2
+    return play_rating_sqrt**2 if play_rating_sqrt >= 0 else -(play_rating_sqrt**2)