Kumiko Iijima defeated Akiko Yonemura 6-4 6-7 7-6 in the Gunma 25K semi-final on carpet. The result followed the form book — Kumiko Iijima came in leading the head-to-head 4–2. Kumiko Iijima extended the head-to-head to 5–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-04-30 | Gifu 50K | Q16 | hard | Kumiko Iijima | 6-1 6-3 |
| 2012-03-26 | Nishi Tama 10K | F | hard | Akiko Yonemura | 1-1 |
| 2011-09-24 | Tokyo | Q32 | hard | Kumiko Iijima | 6-1 6-1 |
| 2011-05-02 | Fukuoka 50K | R16 | grass | Kumiko Iijima | 6-3 7-5 |
| 2010-08-23 | Saitama 10K | QF | hard | Akiko Yonemura | 6-0 6-3 |
| 2010-05-17 | Karuizawa 25K | QF | carpet | Kumiko Iijima | 7-5 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.