Stadium: Court 4 Round: 25 Ground: Clay
| ITF Brazil F4 | 2017/11/28 11:30 | Oscar Jose Gutierrez v Blumenberg, Alex | 7-5,6-2 |
| ITF Dominican Republic F2 | 2018/12/03 14:30 | Adamson, Alec v Oscar Jose Gutierrez | 6-4,3-6,7-5 |
| ITF Dominican Republic F1 | 2018/11/30 14:00 | Crepatte, Baptiste v Oscar Jose Gutierrez | 6-4,4-6,7-5 |
| ITF Dominican Republic F1 | 2018/11/29 13:30 | Oscar Jose Gutierrez v Rodriguez-Pace, Ricardo | 6-4,6-4 |
| ITF Dominican Republic F1 | 2018/11/28 15:30 | Oscar Jose Gutierrez v Ianakiev, Milen | 4-6,6-3,6-4 |
| ITF Dominican Republic F1 | 2018/11/26 14:30 | Oscar Jose Gutierrez v Mendoza, Alejandro | 6-3,6-2 |
| ITF Brazil F8 | 2018/11/09 14:30 | Oscar Jose Gutierrez v Matos, Rafael | 6-4,4-6,2-6 |
| ITF Brazil F8 | 2018/11/07 21:40 | Oscar Jose Gutierrez v Marques Da Silva, Rafael | 6-1,6-2 |
| ITF Brazil F8 | 2018/11/06 17:55 | Oscar Jose Gutierrez v Fermin Tenti | 4-6,6-4,7-6 |
| ITF Dominican Republic F3 | 2018/12/10 13:00 | Blumenberg, Alex v Major, Kevin | 3-6,6-3,6-4 |
| ITF Dominican Republic F2 | 2018/12/02 15:00 | Blumenberg, Alex v Major, Kevin | 6-7,0-6 |
| ITF Dominican Republic F1 | 2018/11/28 15:55 | Blumenberg, Alex v Olivares, Jose | 3-6,1-6 |
| ITF Dominican Republic F1 | 2018/11/27 16:30 | Blumenberg, Alex v Omni Kumar | 3-6,6-4,6-2 |
| ITF Dominican Republic F1 | 2018/11/25 15:00 | Blumenberg, Alex v Turino, Osviel | 6-1,6-3 |
| ITF Brazil F9 | 2018/11/17 13:00 | Souza, Joao Olavo v Blumenberg, Alex | 6-3,6-1 |
| ITF Brazil F9 | 2018/11/16 13:00 | Blumenberg, Alex v Severino, Carlos Eduardo | 6-4,6-4 |
| ITF Brazil F9 | 2018/11/15 13:40 | Matos, Rafael v Blumenberg, Alex | 3-6,6-7 |