Seiko Okamoto defeated Sabine Klaschka 5-7 6-4 6-0 in the Las Vegas 75K round of 32 on hard. The upset overturned the form book — Sabine Klaschka came in leading the head-to-head 1–0. Seiko Okamoto claimed a first win over Sabine Klaschka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-11-22 | Mount Gambier 25K | R32 | hard | Sabine Klaschka | 7-6(1) 6-4 |