Gaston Paz defeated Tiago Lopes 4-6 7-6 6-1 in the Brazil F21 round of 32 on clay. The upset overturned the form book — Tiago Lopes came in leading the head-to-head 1–0. Gaston Paz claimed a first win over Tiago Lopes in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-12-09 | Brazil F20 | R32 | clay | Tiago Lopes | 6-4 2-6 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.