Shiho Hisamatsu defeated Yumi Nakano 6-2 6-2 in the Obihiro 25K round of 16 on carpet. The result followed the form book — Shiho Hisamatsu came in leading the head-to-head 1–0. Shiho Hisamatsu extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-03-23 | Kofu 10K | R16 | hard | Shiho Hisamatsu | 3-6 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.