Mario Haider Maurer defeated Tristan Samuel Weissborn 7-6 6-4 in the Austria F5 round of 32 on clay. The upset overturned the form book — Tristan Samuel Weissborn came in leading the head-to-head 1–0. Mario Haider Maurer claimed a first win over Tristan Samuel Weissborn in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-08-29 | Austria F8 | QF | clay | Tristan Samuel Weissborn | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.