Tomoko Yonemura defeated Ayumi Oka 6-2 6-4 in the Toyota 75K round of 16 on carpet. The result followed the form book — Tomoko Yonemura came in leading the head-to-head 1–0. Tomoko Yonemura extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-07-31 | Tokachi 250K | R32 | carpet | Tomoko Yonemura | 6-2 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.