Alejandro Kon defeated Jonathan Gonzalia 7-6 7-6 in the Argentina F8 round of 32 on clay. The upset overturned the form book — Jonathan Gonzalia came in leading the head-to-head 2–0. Alejandro Kon claimed a first win over Jonathan Gonzalia in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-09-14 | Argentina F15 | R32 | clay | Jonathan Gonzalia | 6-1 6-1 |
| 2008-06-16 | Argentina F4 | SF | clay | Jonathan Gonzalia | 6-1 2-6 6-1 |