Moe Tsubuku defeated Eriko Mizuno 6-1 4-6 6-1 in the Tokyo 2 10K round of 16 on hard. The upset overturned the form book — Eriko Mizuno came in leading the head-to-head 1–0. Moe Tsubuku claimed a first win over Eriko Mizuno in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-09-05 | Kyoto 10K | R32 | carpet | Eriko Mizuno | 6-3 6-1 |