Tomoko Dokei defeated Hiromi Okazaki 6-3 6-2 in the Celaya 10K round of 16 on clay. The result followed the form book — Tomoko Dokei came in leading the head-to-head 2–0. Tomoko Dokei extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-12-07 | La Habana 10K | R32 | hard | Tomoko Dokei | 6-2 6-3 |
| 2004-04-12 | Yamaguchi 10K | R16 | clay | Tomoko Dokei | 6-2 6-1 |