Akiko Yonemura advanced when Chiaki Okadaue retired 6-1 2-1 in the Fukuoka 50K round of 32. 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 |
| 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 |
| 2007-05-21 | Nagano 25K | R32 | carpet | Akiko Yonemura | 2-6 7-5 6-4 |
| 2006-05-29 | Gunma 25K | QF | carpet | Akiko Yonemura | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.