Chiaki Okadaue defeated Miki Miyamura 3-6 6-1 6-1 in the Kurume $50K q32 on grass. The result followed the form book — Chiaki Okadaue came in leading the head-to-head 2–0. Chiaki Okadaue extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-01 | Komoro 25K | R32 | clay | Chiaki Okadaue | 6-4 6-0 |
| 2007-06-04 | Tokyo 10K | QF | hard | Chiaki Okadaue | 6-1 6-1 |