Stefan Seifert defeated Alexander Sadecky 7-5 6-4 in the Germany F17 qualifying round on carpet. Stefan Seifert extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-03-10 | Switzerland F3 | QF | carpet | Alexander Sadecky | 7-6(1) 7-5 |
| 2007-10-08 | Germany F19 | R16 | hard | Stefan Seifert | 6-3 6-2 |
Averages over each player's completed matches in the selected window (2 vs 1). 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. Small sample — read as indicative. About