Round: 25 Ground: Clay
| ITF Argentina F9 | 2015/08/19 15:30 | Luciano Betella v Santiago Villarruel | 4-6,1-6 |
| ITF Argentina F9 | 2015/08/16 13:00 | Tomas Reche v Santiago Villarruel | 2-6,3-6 |
| ITF Argentina F6 | 2015/05/16 14:30 | Lucas Farfan v Santiago Villarruel | 1-6,2-6 |
| ITF Argentina F5 | 2015/05/10 12:30 | Santiago Villarruel v Agustin Suarez Gonzalez | 6-2,2-6,5-7 |
| ITF Argentina F5 | 2015/05/09 12:00 | Santiago Villarruel v Alejo Vilaro | 6-0,6-0 |
| ITF Argentina F4 | 2015/05/05 19:50 | Santiago Villarruel v Eduardo Agustin Torre | 3-6,1-6 |
| ITF Argentina F4 | 2015/05/03 13:00 | Santiago Villarruel v Gerardo Irarrazabal | 6-2,6-7,6-4 |
| ITF Bolivia F3 Qual | 2014/09/29 21:15 | Agustin Moyano v Santiago Villarruel | 7-6,6-4 |
| ITF Argentina F8 | 2015/08/11 17:15 | Daniel Dutra Da Silva v Gonzalo Villanueva | 6-1,6-3 |
| ITF Brazil F3 | 2015/06/24 15:00 | Gonzalo Villanueva v Franco Emanuel Egea | 3-6,2-6 |
| ITF Brazil F3 | 2015/06/23 16:40 | Andre Miele v Gonzalo Villanueva | 2-6,1-6 |
| ITF Brazil F3 | 2015/06/21 16:00 | Gonzalo Villanueva v Federico Nicolas Bertucci | 6-1,6-1 |
| ITF Brazil F3 | 2015/06/21 12:00 | Gonzalo Villanueva v Enrique Bogo | 6-4,6-4 |
| ITF Brazil F3 | 2015/06/20 12:00 | Gonzalo Villanueva v Kevin Borges Pereira | 6-0,6-0 |
| ITF Brazil F2 | 2015/06/18 19:55 | Hernan Casanova v Gonzalo Villanueva | 5-7,6-1,6-4 |
| ITF Brazil F2 | 2015/06/16 15:35 | Gonzalo Villanueva v Alexandre Tsuchiya | 3-6,7-5,6-3 |