diff --git a/server/routers/stats.py b/server/routers/stats.py
index 08468cd..d2dce68 100644
--- a/server/routers/stats.py
+++ b/server/routers/stats.py
@@ -159,6 +159,7 @@ async def get_leaderboard(
     metric: str = Query("wins", pattern="^(wins|win_rate|avg_score|knockouts|streak|rating)$"),
     limit: int = Query(50, ge=1, le=100),
     offset: int = Query(0, ge=0),
+    include_test: bool = Query(False, description="Include soak-harness test accounts"),
     service: StatsService = Depends(get_stats_service_dep),
 ):
     """
@@ -172,8 +173,9 @@ async def get_leaderboard(
     - streak: Best win streak
 
     Players must have 5+ games to appear on leaderboards.
+    By default, soak-harness test accounts are hidden.
     """
-    entries = await service.get_leaderboard(metric, limit, offset)
+    entries = await service.get_leaderboard(metric, limit, offset, include_test)
 
     return {
         "metric": metric,
@@ -228,10 +230,11 @@ async def get_player_stats(
 async def get_player_rank(
     user_id: str,
     metric: str = Query("wins", pattern="^(wins|win_rate|avg_score|knockouts|streak|rating)$"),
+    include_test: bool = Query(False, description="Include soak-harness test accounts"),
     service: StatsService = Depends(get_stats_service_dep),
 ):
     """Get player's rank on a leaderboard."""
-    rank = await service.get_player_rank(user_id, metric)
+    rank = await service.get_player_rank(user_id, metric, include_test)
 
     return {
         "user_id": user_id,
@@ -348,11 +351,12 @@ async def get_my_stats(
 @router.get("/me/rank", response_model=PlayerRankResponse)
 async def get_my_rank(
     metric: str = Query("wins", pattern="^(wins|win_rate|avg_score|knockouts|streak|rating)$"),
+    include_test: bool = Query(False, description="Include soak-harness test accounts"),
     user: User = Depends(require_user),
     service: StatsService = Depends(get_stats_service_dep),
 ):
     """Get current user's rank on a leaderboard."""
-    rank = await service.get_player_rank(user.id, metric)
+    rank = await service.get_player_rank(user.id, metric, include_test)
 
     return {
         "user_id": user.id,
diff --git a/server/services/stats_service.py b/server/services/stats_service.py
index 92234d5..cedda22 100644
--- a/server/services/stats_service.py
+++ b/server/services/stats_service.py
@@ -171,6 +171,7 @@ class StatsService:
         metric: str = "wins",
         limit: int = 50,
         offset: int = 0,
+        include_test: bool = False,
     ) -> List[LeaderboardEntry]:
         """
         Get leaderboard by metric.
@@ -179,6 +180,8 @@ class StatsService:
             metric: Ranking metric - wins, win_rate, avg_score, knockouts, streak.
             limit: Maximum entries to return.
             offset: Pagination offset.
+            include_test: If True, include soak-harness test accounts. Default
+                False so real users never see synthetic load-test traffic.
 
         Returns:
             List of LeaderboardEntry sorted by metric.
@@ -212,9 +215,10 @@ class StatsService:
                         COALESCE(rating, 1500) as rating,
                         ROW_NUMBER() OVER (ORDER BY {column} {direction}) as rank
                     FROM leaderboard_overall
+                    WHERE ($3 OR NOT is_test_account)
                     ORDER BY {column} {direction}
                     LIMIT $1 OFFSET $2
-                """, limit, offset)
+                """, limit, offset, include_test)
             else:
                 # Fall back to direct query
                 rows = await conn.fetch(f"""
@@ -230,9 +234,10 @@ class StatsService:
                     WHERE s.games_played >= 5
                     AND u.deleted_at IS NULL
                     AND (u.is_banned = false OR u.is_banned IS NULL)
+                    AND ($3 OR NOT COALESCE(u.is_test_account, FALSE))
                     ORDER BY {column} {direction}
                     LIMIT $1 OFFSET $2
-                """, limit, offset)
+                """, limit, offset, include_test)
 
             return [
                 LeaderboardEntry(
@@ -246,16 +251,26 @@ class StatsService:
                 for row in rows
             ]
 
-    async def get_player_rank(self, user_id: str, metric: str = "wins") -> Optional[int]:
+    async def get_player_rank(
+        self,
+        user_id: str,
+        metric: str = "wins",
+        include_test: bool = False,
+    ) -> Optional[int]:
         """
         Get a player's rank on a leaderboard.
 
         Args:
             user_id: User UUID.
             metric: Ranking metric.
+            include_test: If True, rank within a leaderboard that includes
+                soak-harness test accounts. Default False matches the public
+                leaderboard view.
 
         Returns:
-            Rank number or None if not ranked (< 5 games or not found).
+            Rank number or None if not ranked (< 5 games or not found, or
+            filtered out because they are a test account and include_test is
+            False).
         """
         order_map = {
             "wins": ("games_won", "DESC"),
@@ -288,9 +303,10 @@ class StatsService:
                     SELECT rank FROM (
                         SELECT user_id, ROW_NUMBER() OVER (ORDER BY {column} {direction}) as rank
                         FROM leaderboard_overall
+                        WHERE ($2 OR NOT is_test_account)
                     ) ranked
                     WHERE user_id = $1
-                """, user_id)
+                """, user_id, include_test)
             else:
                 row = await conn.fetchrow(f"""
                     SELECT rank FROM (
@@ -300,9 +316,10 @@ class StatsService:
                         WHERE s.games_played >= 5
                         AND u.deleted_at IS NULL
                         AND (u.is_banned = false OR u.is_banned IS NULL)
+                        AND ($2 OR NOT COALESCE(u.is_test_account, FALSE))
                     ) ranked
                     WHERE user_id = $1
-                """, user_id)
+                """, user_id, include_test)
 
             return row["rank"] if row else None