Jonathan Gonzalia defeated Damian Guichonet 6-4 7-5 in the Argentina F25 round of 16 on clay. The upset overturned the form book — Damian Guichonet came in leading the head-to-head 2–0. Jonathan Gonzalia claimed a first win over Damian Guichonet in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-11-10 | Argentina F16 | R32 | clay | Damian Guichonet | 4-6 6-3 6-4 |
| 2008-10-27 | Argentina F14 | R32 | clay | Damian Guichonet | 6-3 4-6 6-2 |