Stadium: Court 8 Round: 27 Ground: Clay
| ITF Uruguay F2 | 2016/12/07 16:35 | Gonzalo Villanueva v Nicolas Santos | 6-4,2-6,6-1 |
| ITF Brazil F4 | 2018/05/17 21:30 | Nicolas Santos v Gonzalo Lama | 6-4,6-7,2-6 |
| ITF Brazil F4 | 2018/05/15 13:00 | Felipe Garla v Nicolas Santos | 2-6,0-6 |
| ITF Brazil F3 | 2018/05/12 17:20 | Nicolas Santos v Oscar Jose Gutierrez | 6-4,3-6,4-6 |
| ITF Brazil F3 | 2018/05/11 22:45 | Christian Lindell v Nicolas Santos | 4-6,2-6 |
| ITF Brazil F3 | 2018/05/09 16:40 | Asdrubal Gobernate v Nicolas Santos | 4-6,2-6 |
| ITF Brazil F3 | 2018/05/07 15:30 | Nicolas Santos v Wilson Leite | 6-2,6-4 |
| ITF Brazil F2 | 2018/05/02 15:00 | Carlos E. Severino v Nicolas Santos | 7-6,6-3 |
| ITF Brazil F1 | 2018/04/26 01:30 | Nicolas Santos v Christian Lindell | 6-7,4-6 |
| Challenger Cordenons | 2018/08/12 16:15 | Daniel Dutra Da Silva v Gonzalo Villanueva | 7-5,6-4 |
| Challenger Cordenons | 2018/08/11 12:30 | Gonzalo Villanueva v Franco Agamenone | 7-6,6-2 |
| ITF Italy F22 | 2018/08/09 12:25 | Gonzalo Villanueva v Fabien Reboul | 4-6,2-6 |
| ITF Italy F22 | 2018/08/08 11:40 | Hernan Casanova v Gonzalo Villanueva | 3-6,4-6 |
| ITF Italy F22 | 2018/08/06 12:00 | Jose Pereira v Gonzalo Villanueva | 6-4,3-6,4-6 |
| ITF Italy F21 | 2018/08/03 11:00 | Gonzalo Villanueva v Tomas Martin Etcheverry | 4-6,6-3,5-7 |
| ITF Italy F21 | 2018/08/02 14:40 | Lorenzo Frigerio v Gonzalo Villanueva | 3-6,2-6 |
| ITF Italy F21 | 2018/08/01 11:15 | Gonzalo Villanueva v Riccardo Bonadio | 6-1,6-7,6-3 |