Filipe Brandao defeated Gustavo Guerses 6-4 4-6 6-3 in the Brazil F14 round of 32 on clay. The upset overturned the form book — Gustavo Guerses came in leading the head-to-head 1–0. Filipe Brandao claimed a first win over Gustavo Guerses in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-19 | Brazil F31 | R32 | clay | Gustavo Guerses | 4-6 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.