

Maria Sakkari defeated Madison Keys 6-3 6-3 in the Washington quarter-final on hard. The upset overturned the form book — Madison Keys came in ranked #24. Maria Sakkari extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-04-28 | Madrid | R64 | clay | Maria Sakkari | 6-7 6-3 6-4 |
| 2021-03-01 | Doha | R16 | hard | Maria Sakkari | 6-2 6-2 |
| 2020-01-20 | Australian Open | R32 | hard | Maria Sakkari | 6-4 6-4 |
Averages over each player's completed matches in the selected window (189 vs 170). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Sakkari M.: 3 days rest · 2 matches, 51 games (7d) · Keys M.: 1 day rest · 3 matches, 67 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About