Ayano Shimizu defeated Himeno Sakatsume 6-2 7-6 in the W25 Nanao quarter-final on carpet. The upset overturned the form book — Himeno Sakatsume came in ranked #132. Ayano Shimizu extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-03-15 | W50 Kyoto 1 | SF | hard | Himeno Sakatsume | 6-1 6-3 |
| 2023-11-15 | W100 Takasaki 1 | R32 | hard | Ayano Shimizu | 6-4 3-6 7-6(7) |
Averages over each player's completed matches in the selected window (67 vs 117). 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