Sachie Ishizu defeated Ayumi Oka 7-6 1-6 6-4 in the Kofu 10K semi-final on hard. The result followed the form book — Sachie Ishizu came in leading the head-to-head 1–0. Sachie Ishizu extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-05-31 | Komoro 10K | SF | clay | Sachie Ishizu | 6-2 3-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.