Sarah Gronert defeated Sina Haas 6-2 6-4 in the Wahlstedt 10K qualifying round on clay. The result followed the form book — Sarah Gronert came in leading the head-to-head 2–0. Sarah Gronert extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-02-16 | Altenkirchen $25K | Q32 | carpet | Sarah Gronert | 6-4 1-6 6-3 |
| 2009-07-13 | Darmstadt 25K | R32 | clay | Sarah Gronert | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.