Maria Sakkari defeated Katerina Siniakova 6-4 6-2 in the US Open round of 64 on hard. The upset overturned the form book — Katerina Siniakova came in ranked #36, defending last year's round of 128. Maria Sakkari extended the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-03-07 | Indian Wells | R64 | hard | Maria Sakkari | 6-3 7-5 |
| 2019-05-27 | Roland Garros | R64 | clay | Katerina Siniakova | 7-6(5) 6-7(10) 6-3 |
| 2018-01-15 | Australian Open | R128 | hard | Katerina Siniakova | 6-2 6-7(5) 6-4 |
| 2017-07-03 | Wimbledon | R128 | grass | Maria Sakkari | 6-3 6-4 |
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
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Sakkari M.: 7 days rest · 1 match, 15 games (7d) · Siniakova K.: 10 days rest · 2 matches (14d). Higher means fresher. About