Marc Sieber defeated Andre Wiesler 7-6 7-5 in the Germany F13 round of 32 on clay. Marc Sieber extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-08-18 | Germany F16 | R16 | clay | Marc Sieber | 6-2 7-5 |
| 2008-08-11 | Germany F15 | QF | clay | Andre Wiesler | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.