Akiko Yonemura defeated Tomoko Sugano 6-0 6-2 in the Obihiro 25K round of 16 on carpet. The upset overturned the form book — Tomoko Sugano came in leading the head-to-head 1–0. Akiko Yonemura claimed a first win over Tomoko Sugano in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-18 | Yamaguchi 10K | R16 | clay | Tomoko Sugano | 5-7 7-6(3) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.