Ralph Grambow advanced when Philipp Petzschner retired 6-3 3-6 3-0 in the Germany F3 qualifying round. Ralph Grambow claimed a first win over Philipp Petzschner in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-01-30 | Germany F5 | R16 | carpet | Philipp Petzschner | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.