Chiaki Okadaue defeated Chihiro Nunome 7-6 6-3 in the Kofu $10K round of 16 on hard. The result followed the form book — Chiaki Okadaue came in leading the head-to-head 1–0. Chiaki Okadaue extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-03-18 | Kofu 10K | QF | hard | Chiaki Okadaue | 7-5 6-4 |