Round: 62 Ground: Clay
| ITF Argentina F12 | 2017/12/03 12:00 | Leonardo Aboian v Matias Riva | 6-4,6-4 |
| ITF Argentina F11 | 2017/11/26 13:00 | Gaston Tonello v Matias Riva | 6-2,6-1 |
| ITF Argentina F9 | 2017/11/11 14:00 | Matias Riva v Juan M G Paiva | 0-6,6-2,6-7 |
| ITF Argentina F8 | 2017/11/05 14:30 | Matias Riva v Valentin Florez | 1-6,0-6 |
| ITF Bolivia F3 Qual | 2017/09/30 16:00 | Carlos Ramirez Utermann v Matias Riva | 6-4,5-7,7-5 |
| ITF Bolivia F2 Qual | 2017/09/23 13:30 | Facundo Juarez v Matias Riva | 6-2,6-2 |
| ITF Argentina F7 | 2017/09/09 15:00 | Matias Riva v Federico Moreno | 3-6,2-6 |
| ITF Argentina F4 | 2017/08/19 11:30 | Matias Riva v Tomas Martin Etcheverry | 3-6,0-6 |
| ITF Brazil F2 | 2018/04/29 15:00 | Alex Blumenberg v Igor Sao Thiago | 6-4,5-7,6-4 |
| ITF Brazil F2 | 2018/04/28 17:30 | Alex Blumenberg v Enrico dos Santos Lima | 6-3,6-4 |
| ITF Brazil F1 | 2018/04/22 15:30 | Alex Blumenberg v Enrique Bogo | 3-6,4-6 |
| ITF Brazil F1 | 2018/04/21 16:00 | Laelson Rodrigues v Alex Blumenberg | 2-6,2-6 |
| ITF USA F8 Qual | 2018/03/17 17:00 | Alex Blumenberg v Evan Zhu | 5-7,3-6 |
| ITF Canada F2 Qual | 2018/03/03 15:00 | Alex Blumenberg v Francesco Ferrari | 6-7,6-7 |
| ITF Canada F1 Qual | 2018/02/25 15:00 | Danny Thomas v Alex Blumenberg | 7-6,7-6 |
| ITF Brazil F4 | 2017/11/28 11:30 | Oscar Jose Gutierrez v Alex Blumenberg | 7-5,6-2 |