Akiko Yonemura defeated Tomoko Yonemura 7-6 6-4 in the Taoyuan 50K round of 32 on hard. The upset overturned the form book — Tomoko Yonemura came in leading the head-to-head 5–1. Akiko Yonemura narrowed the head-to-head to 5–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-11-23 | Toyota 75K | R32 | carpet | Tomoko Yonemura | 7-5 6-4 |
| 2009-09-21 | Makinohara 25K | R32 | carpet | Tomoko Yonemura | 6-3 6-4 |
| 2009-05-04 | Fukuoka 50K | R16 | grass | Tomoko Yonemura | 7-6(3) 6-2 |
| 2008-10-13 | Makinohara 25K | QF | carpet | Akiko Yonemura | 7-5 1-6 7-5 |
| 2006-07-03 | Nagoya 25K | R16 | hard | Tomoko Yonemura | 6-3 6-1 |
| 2006-06-19 | Changwon 25K | R32 | hard | Tomoko Yonemura | 6-2 6-0 |
Averages over each player's completed matches in the selected window (1 vs 2). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About