Gonzalo Villanueva defeated Gaston Paz 6-0 6-0 in the Argentina F3 qualifying round of 16 on clay. The upset overturned the form book — Gaston Paz came in leading the head-to-head 1–0, but Gonzalo Villanueva had been the form player, winning 9 of their last 10 on clay. Gonzalo Villanueva claimed a first win over Gaston Paz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-27 | Argentina F8 | Q32 | clay | Gaston Paz | 6-3 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.