Philipp Marx defeated Philipp Petzschner 6-4 7-6 in the Germany F1 round of 16 on carpet. The upset overturned the form book — Philipp Petzschner came in leading the head-to-head 3–0. Philipp Marx claimed a first win over Philipp Petzschner in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-01-16 | Austria F1 | R16 | carpet | Philipp Petzschner | 6-4 5-7 6-4 |
| 2004-10-04 | Germany 1 Satellite 4 | SF | carpet | Philipp Petzschner | 6-4 6-4 |
| 2004-06-12 | s Hertogenbosch | Q32 | grass | Philipp Petzschner | 6-7(8) 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.