Stadium: Quadra Joao Lima Round: 46 Ground: Clay
| Challenger Campinas Qual | 2018/09/29 14:15 | Christian Lindell v Nicolas Alvarez | 2-6,1-6 |
| ITF Argentina F5 | 2018/09/15 13:30 | Nicolas Alvarez v Camilo Ugo Carabelli | 2-6,6-7 |
| ITF Argentina F5 | 2018/09/14 16:15 | Nicolas Alvarez v Genaro Alberto Olivieri | 6-3,1-6,6-2 |
| ITF Argentina F5 | 2018/09/13 13:30 | Francisco Cerundolo v Nicolas Alvarez | 6-4,3-6,6-7 |
| ITF Argentina F5 | 2018/09/12 16:05 | Guido Ivan Justo v Nicolas Alvarez | 3-6,1-6 |
| ITF Argentina F5 | 2018/09/10 13:30 | Tomas Farjat v Nicolas Alvarez | 2-6,1-6 |
| ITF USA F23 | 2018/08/17 15:50 | Antoine Hoang v Nicolas Alvarez | 6-3,6-3 |
| ITF USA F23 | 2018/08/16 16:00 | Nicolas Alvarez v Liam Caruana | 6-1,6-4 |
| Challenger Campinas | 2018/09/29 13:55 | Guillermo Duran v Pedro Sakamoto | 1-6,2-6 |
| ITF Poland F8 | 2018/08/23 09:00 | Pedro Sakamoto v Petr Nouza | 3-6,3-6 |
| ITF Poland F8 | 2018/08/21 09:30 | Pedro Sakamoto v Michal Mikula | 6-3,6-2 |
| ITF Poland F7 | 2018/08/19 09:00 | Jeremy Jahn v Pedro Sakamoto | 6-3,6-4 |
| ITF Poland F7 | 2018/08/18 12:55 | Pedro Sakamoto v Lukas Klein | 6-2,6-2 |
| ITF Poland F7 | 2018/08/17 12:40 | Pedro Sakamoto v Pawel Juszczak | 6-1,6-4 |
| ITF Poland F7 | 2018/08/15 09:15 | Pedro Sakamoto v Kacper Zuk | 6-2,6-2 |
| ITF Poland F7 | 2018/08/14 12:00 | Pedro Sakamoto v Maciej Smola | 7-6,7-6 |