Ayumi Oka defeated Qiang Wang 6-2 6-0 in the Noto 25K round of 32 on carpet. The upset overturned the form book — Qiang Wang came in leading the head-to-head 2–1. Ayumi Oka narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-09-27 | Hamanako 25K | R32 | carpet | Qiang Wang | 6-2 6-1 |
| 2010-09-20 | Makinohara 25K | R16 | carpet | Ayumi Oka | 6-1 7-6(1) |
| 2009-03-23 | Kofu 10K | R32 | hard | Qiang Wang | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.