Marc Sieber defeated Andre Wiesler 6-2 7-5 in the Germany F16 round of 16 on clay. Marc Sieber extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-08-11 | Germany F15 | QF | clay | Andre Wiesler | 6-4 6-2 |
| 2006-08-21 | Germany F13 | R32 | clay | Marc Sieber | 7-6(3) 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.