Desislava Topalova defeated Sabine Klaschka 4-6 6-3 6-2 in the Bielefeld 10K semi-final on clay. The upset overturned the form book — Sabine Klaschka came in leading the head-to-head 1–0. Desislava Topalova claimed a first win over Sabine Klaschka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-10-11 | Sunderland 2 25K | R32 | hard | Sabine Klaschka | 6-2 5-7 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.