Ai Yamamoto defeated Chun Yan He 6-3 7-5 in the Pattaya 10K round of 16 on hard. The result followed the form book — Ai Yamamoto came in leading the head-to-head 1–0. Ai Yamamoto extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-27 | Balikpapan 25K | R32 | hard | Ai Yamamoto | 7-5 6-1 |