Olga Brozda defeated Andrea Sieveke 6-0 6-2 in the Horb 10K round of 32 on clay. The upset overturned the form book — Andrea Sieveke came in leading the head-to-head 1–0. Olga Brozda claimed a first win over Andrea Sieveke in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-01 | Bad Saulgau 10K | R32 | clay | Andrea Sieveke | 6-4 6-7(7) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.