Chiaki Okadaue defeated Keiko Taguchi 6-1 6-2 in the Tokyo 1 10K qualifying round on hard. 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 |
|---|---|---|---|---|---|
| 2006-10-30 | Sutama 25K | R32 | clay | Chiaki Okadaue | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.