Jan Mertl defeated Jakub Herm Zahlava 6-4 6-1 in the Switzerland 1 2 round of 16 on carpet. The result followed the form book — Jan Mertl came in leading the head-to-head 1–0. Jan Mertl extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-26 | Germany F5 | R16 | clay | Jan Mertl | 1-6 6-4 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.