Natsumi Hamamura defeated Mari Inoue 6-2 6-2 in the Bundaberg 25K qualifying round on clay. The result followed the form book — Natsumi Hamamura came in leading the head-to-head 2–0. Natsumi Hamamura extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-10-24 | Hamanako 25K | R32 | carpet | Natsumi Hamamura | 6-7(4) 6-2 6-3 |
| 2006-07-31 | Tokachi 250K | R32 | carpet | Natsumi Hamamura | 7-5 6-7(6) 6-3 |