Beier Ko defeated Leticia Sobral 6-2 7-5 in the Montreal 10K round of 16 on hard. The upset overturned the form book — Leticia Sobral came in leading the head-to-head 1–0, but Beier Ko had been the form player, winning 3 of their last 6 on hard. Beier Ko claimed a first win over Leticia Sobral in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-05-23 | Shanghai 25K | R32 | hard | Leticia Sobral | 7-5 6-1 |