Mayumi Yamamoto defeated Yurika Sema 6-3 5-7 6-3 in the Gunma 25K round of 16 on carpet. The result followed the form book — Mayumi Yamamoto came in leading the head-to-head 1–0. Mayumi Yamamoto extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-10-27 | Sutama 10K | QF | clay | Mayumi Yamamoto | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.