Jonathan Gonzalia defeated Juan Martin Aranguren 6-2 6-1 in the Ecuador F2 round of 16 on clay. The upset overturned the form book — Juan Martin Aranguren came in leading the head-to-head 5–1, but Jonathan Gonzalia had been the form player, winning 6 of their last 10 on clay. Jonathan Gonzalia narrowed the head-to-head to 5–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-03-16 | Italy F3 | QF | clay | Juan Martin Aranguren | 6-3 6-1 |
| 2007-10-01 | Argentina F17 | SF | clay | Juan Martin Aranguren | 7-6(8) 7-6(6) |
| 2007-06-18 | Argentina F9 | F | clay | Juan Martin Aranguren | 6-4 6-3 |
| 2006-10-16 | Brazil F15 | R16 | clay | Juan Martin Aranguren | 6-1 6-2 |
| 2006-03-27 | Argentina F3 | R16 | clay | Juan Martin Aranguren | 6-3 7-6(4) |
| 2005-05-02 | Argentina F4 | QF | clay | Jonathan Gonzalia | 6-4 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.