Stadium: Court 1 Round: 25 Ground: Clay
| ITF Brazil F2 | 2018/05/05 00:25 | Oscar Jose Gutierrez v Pedro Sakamoto | 6-3,2-6,6-3 |
| 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 |
| ITF Brazil F3 | 2018/05/07 12:30 | Aaron Schmid v Diego Matos | 7-6,4-6,4-6 |
| ITF Brazil F3 | 2018/05/06 12:30 | Francisco Llanes v Diego Matos | 1-6,4-6 |
| ITF Nigeria F3 | 2018/04/30 09:00 | Arjun Kadhe v Diego Matos | 6-0,7-6 |
| ITF Nigeria F2 | 2018/04/24 09:00 | Diego Matos v Stephan Gerritsen | 6-3,3-6,4-6 |
| ITF Nigeria F1 | 2018/04/17 12:00 | Danylo Kalenichenko v Diego Matos | 3-6,6-3,6-3 |
| ITF Nigeria F1 | 2018/04/15 09:00 | Christian Paul v Diego Matos | 2-6,5-7 |
| ITF Israel F3 | 2018/03/18 08:00 | Roee Benya v Diego Matos | 5-7,7-6,7-6 |
| ITF Greece F3 | 2018/03/14 14:55 | Diego Matos v Fran Zvonimir Zgombic | 1-6,6-7 |