Samantha Stosur defeated Zarina Diyas 7-6 6-3 in the Osaka final on hard. The result followed the form book — Samantha Stosur came in leading the head-to-head 1–0, defending the title. Samantha Stosur extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-06-11 | Nottingham | R32 | grass | Samantha Stosur | 2-1 RET |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (197 vs 199). ATP, WTA & Challenger.