Martin Alund defeated Jonathan Gonzalia 6-2 6-3 in the Argentina F16 qualifying round on clay. The upset overturned the form book — Jonathan Gonzalia came in leading the head-to-head 4–0. Martin Alund claimed a first win over Jonathan Gonzalia in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-01-25 | Argentina F1 | F | clay | Jonathan Gonzalia | 6-3 4-6 6-1 |
| 2006-11-20 | Chile F5 | QF | clay | Jonathan Gonzalia | 6-1 7-5 |
| 2006-03-13 | Argentina F1 | R32 | clay | Jonathan Gonzalia | 6-3 6-2 |
| 2005-04-04 | Chile F1 | R16 | clay | Jonathan Gonzalia | 3-6 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.