Moe Kawatoko defeated Maki Arai 7-6 6-1 in the Tokyo 10K round of 16 on carpet. The upset overturned the form book — Maki Arai came in leading the head-to-head 1–0. Moe Kawatoko claimed a first win over Maki Arai in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-03 | Niigata 10K | R32 | carpet | Maki Arai | 6-3 6-4 |