Damian Guichonet defeated Marcos Conocente 7-5 1-6 6-4 in the Argentina F16 qualifying round on clay. The upset overturned the form book — Marcos Conocente came in leading the head-to-head 2–1. Damian Guichonet narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-10-12 | Argentina F19 FUTURES | R32 | clay | Marcos Conocente | 4-6 7-5 6-4 |
| 2009-06-22 | Argentina F10 | R32 | clay | Damian Guichonet | 6-4 6-2 |
| 2008-05-19 | Argentina F3 | R32 | clay | Marcos Conocente | 7-5 6-4 |