Tomoko Dokei defeated Sachie Ishizu 7-5 7-5 in the Gunma 25K round of 32 on carpet. The upset overturned the form book — Sachie Ishizu came in leading the head-to-head 1–0. Tomoko Dokei claimed a first win over Sachie Ishizu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-17 | Nonthaburi 10K | R32 | hard | Sachie Ishizu | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.