Andrei Mlendea defeated Adam Chadaj 0-6 6-1 6-4 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, but Andrei Mlendea had been the form player, winning 6 of their last 10 on clay. Andrei Mlendea claimed a first win over Adam Chadaj in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-04-04 | Turkey F12 | R32 | hard | Adam Chadaj | 1-6 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.