Jan Mertl defeated Andis Juska 6-3 6-3 in the Germany F2 round of 32 on hard. The upset overturned the form book — Andis Juska came in leading the head-to-head 2–1. Jan Mertl narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-01-10 | Germany F1 | SF | carpet | Andis Juska | 7-6(3) 6-1 |
| 2008-12-15 | Czech Rep F6 | F | carpet | Jan Mertl | 7-6(7) 7-5 |
| 2008-12-08 | Czech Rep F5 | R16 | hard | Andis Juska | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.