Mayumi Yamamoto defeated Ayumi Oka 6-4 7-6 in the Makinohara 25K round of 32 on carpet. The result followed the form book — Mayumi Yamamoto came in leading the head-to-head 1–0. Mayumi Yamamoto extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-29 | Kofu 10K | QF | hard | Mayumi Yamamoto | 6-2 6-0 |