Akiko Yonemura defeated Shizu Katsumi 6-1 2-6 6-2 in the Yamaguchi 10K round of 32 on clay. The upset overturned the form book — Shizu Katsumi came in leading the head-to-head 1–0. Akiko Yonemura claimed a first win over Shizu Katsumi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-10-27 | Sutama 10K | R16 | clay | Shizu Katsumi | 7-6(4) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.