Jan Mertl defeated Holger Fischer 6-3 6-1 in the Germany F18 round of 16 on hard. The upset overturned the form book — Holger Fischer came in leading the head-to-head 1–0. Jan Mertl claimed a first win over Holger Fischer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-02-09 | Switzerland 1 1 | R16 | carpet | Holger Fischer | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.