Shuko Aoyama defeated Akiko Yonemura 6-2 6-3 in the Nonthaburi 25K round of 16 on hard. The upset overturned the form book — Akiko Yonemura came in leading the head-to-head 2–1. Shuko Aoyama narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-11-19 | Toyota 75K | QF | carpet | Shuko Aoyama | 6-3 3-6 6-3 |
| 2010-05-24 | Kusatsu 25K | SF | carpet | Akiko Yonemura | 6-1 1-6 6-2 |
| 2010-05-17 | Karuizawa 25K | R16 | carpet | Akiko Yonemura | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.