Stadium: Center Court Round: 26 Ground: Clay
| ITF Brazil F2 | 2017/11/16 14:30 | Joao Lucas Reis da Silva v Oscar Jose Gutierrez | 5-7,4-6 |
| 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 Turkey F10 | 2018/03/17 07:30 | Oscar Jose Gutierrez v Ivan Nedelko | 1-6,7-5,0-6 |
| ITF Brazil F2 | 2018/04/30 22:55 | Joao Lucas Reis da Silva v Rafael M Da Silva | 6-4,6-1 |
| ITF Brazil F1 | 2018/04/27 15:30 | Daniel Dutra Da Silva v Joao Lucas Reis da Silva | 6-4,6-2 |
| ITF Brazil F1 | 2018/04/26 17:10 | Joao Lucas Reis da Silva v Jose Pereira | 6-4,6-1 |
| ITF Brazil F1 | 2018/04/24 18:10 | Joao Hinsching v Joao Lucas Reis da Silva | 3-6,5-7 |
| ITF Brazil F3 | 2017/11/25 15:00 | Joao Lucas Reis da Silva v Bernardo Saraiva | 1-6,0-6 |
| ITF Brazil F3 | 2017/11/24 14:30 | Eduardo Dischinger v Joao Lucas Reis da Silva | 2-6,6-4,6-7 |
| ITF Brazil F3 | 2017/11/23 16:40 | Daniel Batista v Joao Lucas Reis da Silva | 4-6,2-6 |
| ITF Brazil F3 | 2017/11/21 13:00 | Joao Lucas Reis da Silva v Rafael Matos | 6-0,0-6,7-6 |