Ground: Clay
| ITF Argentina F3 | 2015/03/23 12:00 | Alexandre Tsuchiya v Gonzalo Villanueva | 4-6,0-6 |
| ITF Brazil F1 | 2015/06/08 13:30 | Gonzalo Villanueva v Daniel Dutra Da Silva | 3-6,2-6 |
| ITF Argentina F7 | 2015/05/29 14:40 | Tomas Lipovsek Puches v Gonzalo Villanueva | 6-4,6-2 |
| ITF Argentina F7 | 2015/05/28 13:30 | R. Urzua-Rivera v Gonzalo Villanueva | 6-3,3-6,2-6 |
| ITF Argentina F7 | 2015/05/27 14:55 | Franco Emanuel Egea v Gonzalo Villanueva | 6-3,2-6,0-6 |
| ITF Argentina F5 | 2015/05/14 18:40 | Francisco Bahamonde v Gonzalo Villanueva | 3-6,7-6,6-1 |
| ITF Argentina F5 | 2015/05/11 14:30 | Gonzalo Villanueva v Tomas Lipovsek Puches | 6-3,6-1 |
| ITF Argentina F4 | 2015/05/05 16:15 | Juan Ignacio Galarza v Gonzalo Villanueva | 1-6,7-5,6-2 |
| ITF Chile F5 | 2015/04/23 16:15 | Bastian Malla v Gonzalo Villanueva | 6-4,6-4 |
| ITF Brazil F1 | 2015/06/11 13:30 | Fernando Romboli v Alexandre Tsuchiya | 7-5,6-3 |
| ITF Brazil F1 | 2015/06/10 15:15 | Augusto Laranja v Alexandre Tsuchiya | 5-7,3-6 |
| ITF Brazil F1 | 2015/06/08 13:30 | Alexandre Tsuchiya v Bruno Santanna | 6-4,2-6,6-2 |
| ITF Argentina F7 | 2015/05/27 15:45 | Alexandre Tsuchiya v Juan Pablo Paz | 3-6,2-6 |
| ITF Argentina F7 | 2015/05/26 16:15 | Matias Zukas v Alexandre Tsuchiya | 4-6,2-6 |
| ITF Argentina F6 | 2015/05/20 13:00 | Alexandre Tsuchiya v Juan Ignacio Galarza | 5-7,1-6 |
| ITF Argentina F6 | 2015/05/19 18:15 | Alexandre Tsuchiya v Franco Feitt | 6-2,6-0 |
| ITF Argentina F6 | 2015/05/17 15:00 | Alexandre Tsuchiya v Felipe Derdoy | 6-4,6-0 |