

Naomi Osaka defeated Donna Vekic 6-3 4-6 7-6 in the Stuttgart quarter-final on clay. The result followed the form book — Naomi Osaka came in ranked #13, leading the head-to-head 2–0. Naomi Osaka extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-05-28 | Roland Garros | R64 | clay | Naomi Osaka | 4-6 |
| 2016-01-18 | Australian Open | R128 | hard | Naomi Osaka | 6-3 6-2 |
Averages over each player's completed matches in the selected window (199 vs 200). ATP, WTA & Challenger.
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 clay field, opponent-adjusted over 52 weeks). About