Tanja Ostertag advanced when Carmen Klaschka retired 7-6 in the Stuttgart 25K round of 32. Tanja Ostertag claimed a first win over Carmen Klaschka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-07-02 | Stuttgart-Vaihingen 25K | R16 | clay | Carmen Klaschka | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.