Jana Jandova defeated Diana Marcinkevica 6-4 6-4 in the Horb 10K round of 32 on clay. The upset overturned the form book — Diana Marcinkevica came in leading the head-to-head 1–0. Jana Jandova claimed a first win over Diana Marcinkevica in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-11-07 | Opole 25K | R32 | carpet | Diana Marcinkevica | 6-1 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.