Jonathan Gonzalia defeated Cristian Villagran 6-1 6-3 in the Argentina F4 round of 32 on clay. The upset overturned the form book — Cristian Villagran came in leading the head-to-head 3–0. Jonathan Gonzalia claimed a first win over Cristian Villagran in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-03-13 | Argentina F1 | R16 | clay | Cristian Villagran | 6-3 6-3 |
| 2005-04-25 | Argentina F3 | R32 | clay | Cristian Villagran | 6-2 6-7(2) 6-4 |
| 2004-03-08 | Chile 1 2 | R16 | clay | Cristian Villagran | 6-4 7-6(5) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.