Stadium: Court 1 Round: 27 Ground: Clay
| ITF Brazil F3 | 2016/07/14 17:00 | Rafael Matos v Oscar Jose Gutierrez | 7-5,2-6,6-3 |
| ITF Brazil F2 | 2016/07/08 20:00 | Oscar Jose Gutierrez v Rafael Matos | 6-4,2-6,6-1 |
| 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 |
| Challenger Biella | 2018/09/18 10:30 | Matteo Donati v Oscar Jose Gutierrez | 6-3,6-3 |
| Challenger Biella | 2018/09/17 10:00 | Jan Satral v Oscar Jose Gutierrez | 6-2,6-2 |
| Challenger Biella | 2018/09/16 12:00 | Francesco Paschetto v Oscar Jose Gutierrez | 3-6,0-6 |
| ITF Brazil F5 | 2018/10/17 13:00 | Ignacio Monzon v Rafael Matos | 0-6,2-6 |
| ITF Brazil F5 | 2018/10/15 16:30 | Federico Moreno v Rafael Matos | 4-6,4-6 |
| Challenger Campinas | 2018/10/01 15:00 | Tomas Barrios Vera v Rafael Matos | 6-2,6-4 |
| ITF Argentina F5 | 2018/09/13 15:35 | Gonzalo Villanueva v Rafael Matos | 6-2,6-2 |
| ITF Argentina F5 | 2018/09/12 14:50 | Luciano Tacchi v Rafael Matos | 5-7,7-5,3-6 |
| ITF Argentina F5 | 2018/09/10 16:05 | Daniil Zarichanskiy v Rafael Matos | 1-6,0-6 |
| ITF Argentina F4 | 2018/09/06 17:50 | Rafael Matos v Santiago Rodriguez Taverna | 7-5,0-6,0-6 |
| ITF Argentina F4 | 2018/09/05 14:30 | Rafael Matos v Lorenzo Gagliardo | 6-1,6-1 |