Stadium: Jaime Oncins Round: 25 Ground: Clay
| ITF Argentina F4 | 2017/08/23 14:00 | Oscar Jose Gutierrez v Fermin Tenti | 6-3,6-1 |
| ITF Brazil F7 | 2018/10/29 16:05 | Oscar Jose Gutierrez v Carlos E. Severino | 6-2,3-6,4-6 |
| ITF Brazil F6 | 2018/10/23 18:00 | Oscar Jose Gutierrez v Ignacio Monzon | 4-6,4-6 |
| ITF Brazil F5 | 2018/10/19 13:00 | Oscar Jose Gutierrez v Rafael Matos | 3-6,6-7 |
| ITF Brazil F5 | 2018/10/18 13:00 | Oscar Jose Gutierrez v Carlos E. Severino | 6-3,6-1 |
| ITF Brazil F5 | 2018/10/15 22:00 | Oscar Jose Gutierrez v Ignacio Carou | 6-4,7-5 |
| Challenger Campinas | 2018/10/01 13:00 | Oscar Jose Gutierrez v Nicolas Alvarez | 3-6,5-7 |
| Challenger Campinas | 2018/09/30 13:00 | Oscar Jose Gutierrez v Tomas Lipovsek Puches | 6-7,6-3,6-2 |
| Challenger Campinas Qual | 2018/09/29 13:00 | Oscar Jose Gutierrez v Breno Lodis | 6-1,6-1 |
| ITF Brazil F7 | 2018/11/01 16:10 | Fermin Tenti v Joao Souza | 2-6,1-6 |
| ITF Brazil F7 | 2018/10/30 19:00 | Fermin Tenti v Federico Moreno | 6-3,6-2 |
| ITF Peru F3 | 2018/10/08 15:00 | Fermin Tenti v Rodrigo Sanchez | 0-6,2-6 |
| ITF Peru F3 | 2018/10/06 16:30 | Fermin Tenti v Franco Roncadelli | 6-4,6-1 |
| ITF Peru F2 | 2018/10/02 21:00 | Fermin Tenti v Conner Huertas Del Pino | 1-6,6-7 |
| ITF Peru F2 | 2018/10/01 15:00 | Fermin Tenti v Nicolas Bianchi | 6-0,6-3 |
| ITF Peru F2 | 2018/09/30 15:30 | Fermin Tenti v Enrico dos Santos Lima | 6-3,6-2 |
| ITF Bolivia F3 | 2018/09/28 14:00 | Alejandro Mendoza v Fermin Tenti | 7-5,6-4 |