Malte Stropp defeated Adam Chadaj 5-7 7-5 6-0 in the Germany F8 qualifying round on clay. The upset overturned the form book — Adam Chadaj came in leading the head-to-head 1–0. Malte Stropp claimed a first win over Adam Chadaj in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-07-04 | Germany F8 | R16 | clay | Adam Chadaj | 6-0 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.