Natsumi Hamamura defeated Suchanun Viratprasert 6-3 2-6 6-1 in the Hamanako 25K round of 16 on carpet. 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 |
|---|---|---|---|---|---|
| 2010-02-15 | Mildura 25K | R32 | grass | Natsumi Hamamura | 6-2 6-2 |
| 2007-06-11 | Guangzhou 50K | R32 | hard | Natsumi Hamamura | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.