Akiko Yonemura defeated Chiaki Okadaue 2-6 7-5 6-4 in the Nagano 25K round of 32 on carpet. The result followed the form book — Akiko Yonemura came in leading the head-to-head 6–1. Akiko Yonemura extended the head-to-head to 7–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-05-12 | Kurume 50K | Q16 | grass | Chiaki Okadaue | 7-6(6) 6-4 |
| 2013-06-17 | Tokyo 10K | QF | hard | Akiko Yonemura | 6-2 6-4 |
| 2011-05-02 | Fukuoka 50K | R32 | grass | Akiko Yonemura | 6-1 2-1 |
| 2009-09-07 | Noto 25K | R32 | carpet | Akiko Yonemura | 6-2 4-6 7-5 |
| 2008-10-13 | Makinohara 25K | R32 | carpet | Akiko Yonemura | 6-3 6-3 |
| 2007-05-28 | Gunma 25K | R16 | carpet | Akiko Yonemura | 6-0 6-2 |
| 2006-05-29 | Gunma 25K | QF | carpet | Akiko Yonemura | 6-2 6-2 |
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