Ayumi Koshiishi defeated Lauren Proctor 6-3 6-2 in the W15 Monastir 28 round of 32 on hard. The result followed the form book — Ayumi Koshiishi came in leading the head-to-head 1–0. Ayumi Koshiishi extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-14 | W15 Monastir 30 | SF | hard | Ayumi Koshiishi | 6-2 7-6(7) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.