Akiko Yonemura defeated Natsumi Hamamura 6-3 4-6 6-3 in the Saitama 10K round of 32 on hard. Akiko Yonemura extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-02-15 | Mildura 25K | R16 | grass | Akiko Yonemura | 6-4 6-1 |
| 2009-06-01 | Komoro 25K | R32 | clay | Natsumi Hamamura | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.