Marco Mirnegg defeated Holger Fischer 1-6 6-1 6-2 in the Croatia 1 2 round of 16 on clay. The upset overturned the form book — Holger Fischer came in leading the head-to-head 1–0. Marco Mirnegg claimed a first win over Holger Fischer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-03-10 | Croatia 1 3 | R32 | clay | Holger Fischer | 6-2 2-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.