Makiho Kozawa advanced when Chihiro Nunome retired 6-4 5-2 in the Noto 25K q32. Makiho Kozawa narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-09-02 | Noto 25K | Q32 | grass | Chihiro Nunome | 6-7(3) 6-4 7-6(8) |
| 2012-06-25 | Pattaya 10K | R16 | hard | Chihiro Nunome | 6-2 6-3 |
| 2010-11-15 | Hyogo 10K | R32 | carpet | Makiho Kozawa | 4-6 6-2 6-1 |