Alejandro Fabbri defeated Juan Martin Aranguren 6-4 7-5 in the Argentina 2 round of 16 on clay. The upset overturned the form book — Juan Martin Aranguren came in leading the head-to-head 7–1, but Alejandro Fabbri had been the form player, winning 6 of their last 10 on clay. Alejandro Fabbri narrowed the head-to-head to 7–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-22 | Argentina F10 | F | clay | Juan Martin Aranguren | 7-6(4) 6-4 |
| 2009-05-25 | Italy F12 | R32 | clay | Juan Martin Aranguren | 6-1 3-6 7-5 |
| 2008-12-01 | Argentina F17 | SF | clay | Alejandro Fabbri | 6-4 6-2 |
| 2008-03-17 | Egypt F1 | QF | clay | Juan Martin Aranguren | 6-2 6-7(3) 6-2 |
| 2006-05-15 | Argentina F7 | QF | clay | Juan Martin Aranguren | 6-0 6-1 |
| 2005-10-17 | Chile F4 | R32 | clay | Juan Martin Aranguren | 7-6(5) 7-5 |
| 2005-09-26 | Bolivia F1 | QF | clay | Juan Martin Aranguren | 6-3 6-3 |
| 2004-08-23 | Brazil F4 | R32 | clay | Juan Martin Aranguren | 6-3 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.