Antonio Pastorino defeated Maximo Gonzalez 1-6 7-5 7-5 in the Argentina 3 round of 32 on clay. The upset overturned the form book — Maximo Gonzalez came in leading the head-to-head 4–1. Antonio Pastorino narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-10-03 | Bolivia F2 | SF | clay | Antonio Pastorino | 7-5 6-0 |
| 2005-09-05 | Argentina F10 | SF | clay | Maximo Gonzalez | 7-5 7-5 |
| 2005-08-29 | Argentina F9 | R16 | clay | Maximo Gonzalez | 6-3 6-1 |
| 2004-03-08 | Chile 1 3 | SF | clay | Maximo Gonzalez | 6-3 2-6 6-3 |
| 2003-10-20 | Argentina F4 | R16 | clay | Maximo Gonzalez | 7-6(5) 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.