Mayumi Yamamoto defeated Ayaka Maekawa 0-6 6-4 6-4 in the Nagano 25K semi-final on carpet. Mayumi Yamamoto extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-29 | Kofu 10K | F | hard | Ayaka Maekawa | 6-4 7-6(6) |
| 2006-09-04 | Kyoto 10K | SF | carpet | Mayumi Yamamoto | 6-1 6-3 |