Gaston Arturo Grimolizzi defeated Gaston Giussani 6-0 6-3 in the Chile F5 qualifying round on clay. The result followed the form book — Gaston Arturo Grimolizzi came in leading the head-to-head 3–1. Gaston Arturo Grimolizzi extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-26 | Argentina F17 | R32 | clay | Gaston Arturo Grimolizzi | 6-4 6-4 |
| 2009-07-27 | Brazil F12 | R32 | clay | Gaston Giussani | 6-4 6-4 |
| 2008-10-13 | Argentina F13 | R32 | clay | Gaston Arturo Grimolizzi | 6-4 6-2 |
| 2008-05-05 | Argentina F1 | R16 | clay | Gaston Arturo Grimolizzi | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.