Anna Korzeniak defeated Danielle Harmsen 6-1 6-1 in the Hechingen 25K qualifying round on clay. Anna Korzeniak extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-08-01 | Hechingen 25K | R16 | clay | Anna Korzeniak | 2-6 7-5 6-3 |
| 2007-03-12 | RomeReal 10K | R32 | clay | Danielle Harmsen | 6-3 3-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.