Round: 25 Ground: Clay
| ITF Argentina F3 | 2015/03/24 14:50 | Mariano Kestelboim v Gonzalo Villanueva | 6-4,0-6,3-6 |
| ITF Argentina F3 | 2016/03/16 13:00 | Andrea Collarini v Gonzalo Villanueva | 6-4,6-4 |
| ITF Argentina F2 | 2016/03/08 17:40 | Gonzalo Villanueva v Francisco Bahamonde | 6-7,3-6 |
| ITF Chile F8 | 2015/11/30 17:00 | Jorge Montero v Gonzalo Villanueva | 7-6,6-3 |
| ITF Argentina F12 | 2015/09/17 14:40 | Joao Pedro Sorgi v Gonzalo Villanueva | 4-6,6-1,6-2 |
| ITF Argentina F12 | 2015/09/16 18:30 | Dante Gennaro v Gonzalo Villanueva | 6-1,6-7,4-6 |
| ITF Argentina F12 | 2015/09/15 12:30 | Tomas Reche v Gonzalo Villanueva | 1-6,0-6 |
| ITF Argentina F11 | 2015/09/08 13:00 | Gonzalo Villanueva v Matias Zukas | 6-4,0-6,3-6 |
| ITF Argentina F9 | 2015/08/22 12:30 | Franco Agamenone v Gonzalo Villanueva | 2-6,2-6 |
| ITF Tunisia F9 | 2016/03/09 08:30 | Mariano Kestelboim v Lenny Hampel | 5-7,4-6 |
| ITF Tunisia F8 | 2016/03/06 09:00 | Mariano Kestelboim v Pol Toledo Bague | 4-6,2-6 |
| ITF Tunisia F8 | 2016/03/05 09:30 | Mariano Kestelboim v Amine Ahouda | 6-3,7-5 |
| ITF Tunisia F8 | 2016/03/04 10:20 | Ivan Nedelko v Mariano Kestelboim | 4-6,7-5,6-7 |
| ITF Tunisia F8 | 2016/03/03 08:30 | Ayoub Chakrouni v Mariano Kestelboim | 7-5,3-6,0-6 |
| ITF Tunisia F7 | 2016/02/25 08:30 | Mariano Kestelboim v Michael Linzer | 0-6,4-6 |
| ITF Tunisia F7 | 2016/02/23 14:00 | Mariano Kestelboim v Amine Ahouda | 6-4,6-4 |
| ITF Tunisia F6 | 2016/02/16 08:30 | Laslo Djere v Mariano Kestelboim | 6-4,6-3 |