Stadium: Center Court Round: 27 Ground: Clay
| Challenger Campinas Qual | 2017/10/01 14:30 | Pedro Sakamoto v Oscar Jose Gutierrez | 6-4,6-2 |
| ITF Brazil F2 | 2018/05/02 18:10 | Oscar Jose Gutierrez v Joao Lucas Reis da Silva | 6-4,6-3 |
| ITF Brazil F2 | 2018/05/01 15:00 | Oscar Jose Gutierrez v Fernando Yamacita | 6-4,6-0 |
| ITF Brazil F1 | 2018/04/27 17:00 | Camilo Ugo Carabelli v Oscar Jose Gutierrez | 4-6,6-3,6-1 |
| ITF Brazil F1 | 2018/04/25 15:30 | Alexandre Tsuchiya v Oscar Jose Gutierrez | 4-6,7-6,2-6 |
| ITF Brazil F1 | 2018/04/23 19:15 | Igor Marcondes v Oscar Jose Gutierrez | 6-2,2-6,3-6 |
| ITF Turkey F12 | 2018/03/29 13:00 | Oscar Jose Gutierrez v Dimitar Kuzmanov | 3-6,1-6 |
| ITF Turkey F12 | 2018/03/28 08:40 | Marvin Netuschil v Oscar Jose Gutierrez | 4-6,0-6 |
| ITF Turkey F11 | 2018/03/21 09:10 | Oscar Jose Gutierrez v Juan Pablo Varillas | 3-6,1-6 |
| ITF Brazil F2 | 2018/05/03 23:20 | Pedro Sakamoto v Francisco Comesana | 6-1,6-0 |
| ITF Brazil F2 | 2018/05/01 15:00 | Pedro Sakamoto v Thales Turini | 6-1,6-2 |
| ITF Brazil F2 | 2018/04/30 15:00 | Pedro Sakamoto v Juan Bautista Otegui | 7-5,6-3 |
| ITF Brazil F2 | 2018/04/29 15:00 | Pedro Sakamoto v Rai Vicente de Araujo | 6-2,6-2 |
| Challenger Mexico City Qual | 2018/04/07 16:00 | Pedro Sakamoto v Andrea Basso | 6-4,6-7,3-6 |
| Challenger Panama City | 2018/04/03 17:20 | Pedro Sakamoto v Andrea Basso | 2-6,2-6 |
| Challenger San Luis Potosi | 2018/03/31 19:00 | Roberto Cid Subervi v Pedro Sakamoto | 6-3,6-3 |
| Challenger San Luis Potosi | 2018/03/30 20:15 | Jay Clarke v Pedro Sakamoto | 3-6,6-7 |