Stadium: Cancha 3 Round: 45 Ground: Clay
| Challenger Montevideo | 2018/11/03 13:00 | Pedro Sakamoto v Genaro Alberto Olivieri | 2-6,0-6 |
| Challenger Guayaquil Qual | 2018/10/27 16:00 | Pedro Sakamoto v Federico Zeballos | 6-1,6-7,2-6 |
| Challenger Lima | 2018/10/20 21:20 | Tomas Barrios Vera v Pedro Sakamoto | 6-4,6-3 |
| Challenger Campinas | 2018/09/30 13:00 | Nicolas Alvarez v Pedro Sakamoto | 6-3,7-6 |
| 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 Argentina F8 | 2018/11/06 15:45 | Tomas Farjat v Facundo Mena | 3-6,1-6 |
| ITF Argentina F8 | 2018/11/04 13:00 | Tomas Farjat v Juan Ignacio Ameal | 5-7,6-3,6-3 |
| ITF Argentina F8 | 2018/11/03 13:00 | Tomas Farjat v Matias Riva | 6-1,6-1 |
| ITF Argentina F7 | 2018/11/01 14:00 | Tomas Farjat v Agustin Velotti | 4-6,4-6 |
| ITF Argentina F7 | 2018/10/30 20:00 | Santiago Besada v Tomas Farjat | 3-6,4-6 |
| ITF Peru F3 | 2018/10/08 15:00 | Tomas Farjat v Mateus Alves | 6-7,3-6 |
| ITF Peru F3 | 2018/10/07 16:00 | Tomas Farjat v Matias Riva | 6-7,6-0,6-2 |
| ITF Peru F3 | 2018/10/06 14:00 | Tomas Farjat v Mario Urquidi | 6-4,5-7,6-2 |