Stadium: Court 8 Round: 27 Ground: Clay
| ITF Uruguay F2 | 2016/12/07 16:35 | Gonzalo Villanueva v Santos, Nicolas | 6-4,2-6,6-1 |
| ITF Peru F1 | 2018/09/26 17:20 | Santos, Nicolas v Panta Herreros, Jorge Brian | 4-6,6-3,6-4 |
| ITF Peru F1 | 2018/09/24 15:00 | Santos, Nicolas v Aguilar, Federico Juan | 6-2,7-5 |
| ITF Brazil F4 | 2018/05/17 21:30 | Santos, Nicolas v Gonzalo Lama | 6-4,6-7,2-6 |
| ITF Brazil F4 | 2018/05/15 13:00 | Assuncao Garla, Felipe v Santos, Nicolas | 2-6,0-6 |
| ITF Brazil F3 | 2018/05/12 17:20 | Santos, Nicolas v Oscar Jose Gutierrez | 6-4,3-6,4-6 |
| ITF Brazil F3 | 2018/05/11 22:45 | Lindell, Christian v Santos, Nicolas | 4-6,2-6 |
| ITF Brazil F3 | 2018/05/09 16:40 | Gobernate, Asdrubal v Santos, Nicolas | 4-6,2-6 |
| ITF Brazil F3 | 2018/05/07 15:30 | Santos, Nicolas v Wilson Leite | 6-2,6-4 |
| ITF Peru F1 | 2018/09/26 15:00 | Zaidman, Nicolas v Gonzalo Villanueva | 0-6,0-6 |
| ITF Peru F1 | 2018/09/25 17:55 | Nick Hardt v Gonzalo Villanueva | 1-6,7-5,4-6 |
| ITF Argentina F6 | 2018/09/22 12:00 | Francisco Cerundolo v Gonzalo Villanueva | 0-6,3-6 |
| ITF Argentina F6 | 2018/09/21 13:00 | Gonzalo Villanueva v Estevez Maximiliano | 7-6,6-2 |
| ITF Argentina F6 | 2018/09/20 15:40 | Gonzalo Villanueva v Camilo Ugo Carabelli | 7-5,6-2 |
| ITF Argentina F6 | 2018/09/19 14:45 | Gonzalo Villanueva v Guido Ivan Justo | 6-1,6-4 |
| ITF Argentina F6 | 2018/09/18 14:50 | Gonzalo Villanueva v Juan Manuel Cerundolo | 6-1,6-2 |
| ITF Argentina F5 | 2018/09/14 13:30 | Gonzalo Villanueva v Camilo Ugo Carabelli | 4-6,6-1,3-6 |