Ayumi Morita defeated Natsumi Hamamura 7-5 6-4 in the Kurume 25K qualifying round on grass. The result followed the form book — Ayumi Morita came in leading the head-to-head 3–0. Ayumi Morita extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-11-23 | Toyota 75K | R16 | carpet | Ayumi Morita | 6-4 6-1 |
| 2007-07-30 | Obihiro 25K | SF | carpet | Ayumi Morita | 6-4 3-4 |
| 2006-07-17 | Kurume 25K | R16 | carpet | Ayumi Morita | 7-5 5-7 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.