Nils Langer defeated Mislav Hizak 6-3 3-6 6-3 in the Slovenia F1 round of 16 on clay. The upset overturned the form book — Mislav Hizak came in leading the head-to-head 1–0. Nils Langer claimed a first win over Mislav Hizak in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-02-14 | Croatia F1 | R32 | hard | Mislav Hizak | 6-2 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.