Bastian Knittel defeated Marcel Zimmermann 6-3 6-2 in the Germany 1 Satellite 2 semi-final on carpet. The upset overturned the form book — Marcel Zimmermann came in leading the head-to-head 1–0. Bastian Knittel claimed a first win over Marcel Zimmermann in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-01-31 | Germany F5 | R16 | carpet | Marcel Zimmermann | 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.