Petra Novotnikova defeated Sandra Martinovic 3-6 6-3 6-2 in the Horb 10K round of 32 on clay. The upset overturned the form book — Sandra Martinovic came in leading the head-to-head 1–0, but Petra Novotnikova had been the form player, winning 3 of their last 9 on clay. Petra Novotnikova claimed a first win over Sandra Martinovic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-08-28 | Vienna 10K | R32 | clay | Sandra Martinovic | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.