Bastian Knittel defeated Michael Lammer 6-1 6-2 in the Germany F8 qualifying round on clay. The upset overturned the form book — Michael Lammer came in leading the head-to-head 2–1. Bastian Knittel narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-01-06 | Germany F1 | QF | carpet | Bastian Knittel | 6-3 6-7(4) 6-3 |
| 2004-01-12 | Germany F2 | R32 | hard | Michael Lammer | 7-5 6-3 |
| 2003-06-02 | Germany F6 | R32 | clay | Michael Lammer | 6-3 6-4 |
Averages over each player's completed matches in the selected window (1 vs 9). 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