Aldin Setkic defeated Marc Sieber 6-1 6-2 in the Germany F18 qualifying round on carpet. The upset overturned the form book — Marc Sieber came in leading the head-to-head 2–0. Aldin Setkic claimed a first win over Marc Sieber in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-09-21 | Bosnia & Herzegovina F5 | SF | clay | Marc Sieber | 6-0 6-2 |
| 2008-10-13 | Croatia F10 | QF | clay | Marc Sieber | 0-6 7-5 6-3 |
Averages over each player's completed matches in the selected window (200 vs 141). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About