Shiho Akita defeated Akiko Yonemura 7-5 6-4 in the Makinohara 25K qualifying round of 16 on grass. The upset overturned the form book — Akiko Yonemura came in leading the head-to-head 3–1. Shiho Akita narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-08-26 | Tsukuba 25K | Q32 | hard | Akiko Yonemura | 6-1 6-3 |
| 2013-06-17 | Tokyo 10K | F | hard | Shiho Akita | 6-4 6-4 |
| 2010-05-24 | Kusatsu 25K | QF | carpet | Akiko Yonemura | 6-1 6-1 |
| 2008-10-13 | Makinohara 25K | R16 | carpet | Akiko Yonemura | 7-6(5) 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.