Ayumi Oka defeated Ai Yamamoto 6-3 6-1 in the Kyoto 10K round of 16 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 |
|---|---|---|---|---|---|
| 2008-06-16 | Sutama 10K | R32 | clay | Ayumi Oka | 6-2 7-5 |