Ayano Shimizu defeated Natsumi Kawaguchi 6-4 7-5 in the W40 Hong Kong round of 32 on hard. The upset overturned the form book — Natsumi Kawaguchi came in ranked #380, leading the head-to-head 2–1. Ayano Shimizu narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-03-19 | W50 Kofu 1 | R32 | hard | Natsumi Kawaguchi | 6-2 7-6(4) |
| 2023-05-02 | W80 Gifu | R32 | hard | Ayano Shimizu | 6-1 6-3 |
| 2023-04-22 | W15 Osaka 1 | SF | hard | Natsumi Kawaguchi | 7-5 6-4 |
Averages over each player's completed matches in the selected window (56 vs 60). 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