Eun Hye Cho defeated Akiko Yonemura 7-6 3-6 6-3 in the Tsukuba 25K round of 32 on hard. The upset overturned the form book — Akiko Yonemura came in leading the head-to-head 2–0. Eun Hye Cho claimed a first win over Akiko Yonemura in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-07-16 | Kurume 25K | R16 | grass | Akiko Yonemura | 6-2 6-0 |
| 2006-10-30 | Sutama 25K | R16 | clay | Akiko Yonemura | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.