Misaki Doi defeated Nao Hibino 6-3 6-4 in the Stanford round of 16 on hard. The upset overturned the form book — Nao Hibino came in leading the head-to-head 2–1. Misaki Doi narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-04-12 | Charleston 2 | R32 | clay | Nao Hibino | 7-5 5-7 6-6 RET |
| 2019-09-09 | Hiroshima | F | hard | Nao Hibino | 6-3 6-2 |
| 2017-01-30 | Taipei | R32 | hard | Misaki Doi | 6-2 2-6 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
Averages over each player's completed matches in the selected window (198 vs 200). ATP, WTA & Challenger.