Maki Arai defeated Ayami Takase 6-3 3-6 6-1 in the Ibaraki 1 10K quarter-final on hard. The upset overturned the form book — Ayami Takase came in leading the head-to-head 3–0. Maki Arai claimed a first win over Ayami Takase in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-05-16 | Changwon 25K | R32 | hard | Ayami Takase | 6-4 3-6 7-6(5) |
| 2005-02-21 | Taipei 25K | R32 | hard | Ayami Takase | 6-1 6-2 |
| 2004-09-06 | Ibaraki 25K | R16 | hard | Ayami Takase | 6-7(5) 6-3 6-0 |