Damian Guichonet defeated Gaston Giussani 6-3 7-5 in the Argentina F9 round of 32 on clay. The result followed the form book — Damian Guichonet came in leading the head-to-head 1–0. Damian Guichonet extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-11-23 | Argentina F25 | R32 | clay | Damian Guichonet | 1-6 6-1 6-0 |