Ayumi Oka defeated Yi Jing Zhao 6-3 4-6 6-3 in the Tokyo 10K qualifying round on carpet. The result followed the form book — Ayumi Oka came in leading the head-to-head 1–0. Ayumi Oka extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-06-09 | Tokyo 10K | QF | hard | Ayumi Oka | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.