Season Return-Games-Won Leaderboard

Share of return games won per player, from real match_stats rows joined to matches in the season. Return games won are breaks achieved -- the exact return-side mirror of the stored serve-side columns: a winner breaks (loser faced minus loser saved), a loser breaks (winner faced minus winner saved) -- over the opponent's service games played (loser/winner sv_gms). sv_gms semantics are verified, not assumed: over 234,635 tiebreak-free matches, winner+loser sv_gms equals total set games in 98.05%; over 96,174 tiebreak matches it equals total minus tiebreak sets in 97.0% (tiebreaks are not service games, the correct tour convention); derived breaks fit within sv_gms in 99.5% of 330,922 fully-populated rows; Alcaraz ATP 2026 comes out 31.3%, the realistic tour-level band. Only players with at least 100 return games played qualify (ATP 2026: 987 eligible, top 51.5; WTA 2026: 567 eligible, top 64.0). Rows missing any of the three opponent-side inputs are excluded, never defaulted. No estimates: a player with no stat rows simply does not appear.