Ayaka Maekawa defeated I Hsuan Hwang 7-5 7-5 in the Hamilton 10K qualifying round on hard. The upset overturned the form book — I Hsuan Hwang came in leading the head-to-head 2–0. Ayaka Maekawa claimed a first win over I Hsuan Hwang in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-07-27 | Obihiro-Tokachi 25K | R32 | carpet | I Hsuan Hwang | 7-5 6-3 |
| 2006-05-22 | Nagano 25K | R32 | carpet | I Hsuan Hwang | 7-6(1) 6-2 |