Sabine Klaschka defeated Seiko Okamoto 7-6 6-4 in the Mount Gambier 25K round of 32 on hard. The upset overturned the form book — Seiko Okamoto came in leading the head-to-head 1–0. Sabine Klaschka claimed a first win over Seiko Okamoto in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-02-27 | Las Vegas 75K | R32 | hard | Seiko Okamoto | 5-7 6-4 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.