Makiho Kozawa defeated Ayumi Oka 7-6 6-2 in the Mie 10K round of 32 on carpet. The result followed the form book — Makiho Kozawa came in leading the head-to-head 2–1. Makiho Kozawa extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-12 | Kyoto 10K | QF | carpet | Makiho Kozawa | 5-6 |
| 2010-09-06 | Noto 25K | R32 | carpet | Ayumi Oka | 6-3 6-2 |
| 2010-08-02 | Niigata 10K | R32 | carpet | Makiho Kozawa | 6-7(2) 6-2 6-2 |