Danielle Harmsen defeated Diana Marcinkevica 7-6 6-4 in the Hechingen 25K round of 32 on clay. The upset overturned the form book — Diana Marcinkevica came in leading the head-to-head 1–0, but Danielle Harmsen had been the form player, winning 4 of their last 6 on clay. Danielle Harmsen claimed a first win over Diana Marcinkevica in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-03-25 | Croissy Beaubourg 50K | Q16 | hard | Diana Marcinkevica | 6-2 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.