Chiaki Okadaue defeated Keiko Taguchi 6-3 6-4 in the Sutama 25K round of 32 on clay. The result followed the form book — Chiaki Okadaue came in leading the head-to-head 1–0. Chiaki Okadaue extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-06-05 | Tokyo 1 10K | QF | hard | Chiaki Okadaue | 6-1 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.