Ayumi Koshiishi defeated Eudice Wong Chong 6-2 4-6 6-4 in the W75 Nonthaburi 1 round of 32 on hard. The upset overturned the form book — Eudice Wong Chong came in leading the head-to-head 1–0, but Ayumi Koshiishi had been the form player, winning 4 of their last 7 on hard. Ayumi Koshiishi claimed a first win over Eudice Wong Chong in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-22 | W15 Xiamen 1 | QF | hard | Eudice Wong Chong | 6-2 6-3 |
Averages over each player's completed matches in the selected window (44 vs 16). 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