Agustin Tarantino defeated Juan Martin Aranguren 7-6 6-1 in the Ecuador F3 round of 16 on hard. The upset overturned the form book — Juan Martin Aranguren came in leading the head-to-head 3–1. Agustin Tarantino narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-15 | Brazil F18 | R32 | clay | Juan Martin Aranguren | 6-2 6-2 |
| 2005-09-26 | Bolivia F1 | F | clay | Agustin Tarantino | 6-4 6-4 |
| 2005-09-19 | Argentina F12 | F | clay | Juan Martin Aranguren | 6-2 6-0 |
| 2005-08-29 | Argentina F9 | F | clay | Juan Martin Aranguren | 7-6(4) 1-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.