Maria Sakkari defeated Angelique Kerber 6-0 6-3 in the United Cup quarter-final on hard. The upset overturned the form book — Angelique Kerber came in leading the head-to-head 3–1, defending last year's round-robin. Maria Sakkari narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-16 | Cincinnati | R64 | hard | Angelique Kerber | 6-2 6-2 |
| 2021-02-03 | Grampians Trophy | QF | hard | Maria Sakkari | 6-4 6-2 |
| 2018-05-14 | Rome | R16 | clay | Angelique Kerber | 6-1 6-1 |
| 2016-10-10 | Hong Kong | R32 | hard | Angelique Kerber | 6-4 6-4 |
Averages over each player's completed matches in the selected window (124 vs 24). 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). 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