Kumiko Iijima defeated Ayaka Maekawa 6-1 7-5 in the Hamanako 25K qualifying round on carpet. The result followed the form book — Kumiko Iijima came in leading the head-to-head 3–0. Kumiko Iijima extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-09-20 | Makinohara 25K | R16 | carpet | Kumiko Iijima | 6-2 6-2 |
| 2009-10-11 | Osaka | Q32 | hard | Kumiko Iijima | 6-4 6-1 |
| 2007-05-21 | Nagano 25K | R32 | carpet | Kumiko Iijima | 6-4 6-1 |