Tereza Martincova defeated Danielle Harmsen 1-6 6-3 7-6 in the Stuttgart Stammheim 10K round of 32 on hard. The upset overturned the form book — Danielle Harmsen came in leading the head-to-head 1–0. Tereza Martincova claimed a first win over Danielle Harmsen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-05-03 | Wiesbaden 10K | R32 | clay | Danielle Harmsen | 6-1 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.