Kumiko Iijima defeated Erika Sema 6-7 6-2 6-4 in the Hamanako 25K final on carpet. Kumiko Iijima extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-11-15 | Wellington 25K | SF | hard | Erika Sema | 6-2 6-2 |
| 2007-07-30 | Obihiro 25K | R16 | carpet | Kumiko Iijima | 6-0 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.