Shiho Hisamatsu advanced when Chisayo Ito retired 6-3 3-3 in the Ibaraki 10K semi-final. Shiho Hisamatsu extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-10-13 | Haibara 25K | QF | carpet | Shiho Hisamatsu | 6-2 6-3 |
| 2001-09-03 | Kugayama 10K | QF | hard | Shiho Hisamatsu | 6-2 7-6(4) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.