Stadion: Cancha Central Round: 14 Ground: Clay
| Challenger - Campinas | 2020/11/30 15:00 | Oscar Jose Gutierrez v Sebastian Baez | 5-7,6-1,1-6 |
| Challenger - Sao Paulo | 2020/11/22 14:00 | Oscar Jose Gutierrez v Matheus P De Almeida | 1-6,3-6 |
| ITF - M15 - Setubal | 2020/10/06 10:45 | Oscar Jose Gutierrez v Patrik Niklas-Salminen | 2-6,4-6 |
| ITF - M25 - Porto | 2020/09/30 16:40 | Giovanni Fonio v Oscar Jose Gutierrez | 6-4,6-1 |
| Challenger - Forlì | 2020/09/19 11:30 | Oscar Jose Gutierrez v Mohamed Aziz Dougaz | 3-6,7-5,2-6 |
| ITF - M25 - Plaisir | 2020/09/15 08:30 | Oscar Jose Gutierrez v Valentin Royer | 4-6,1-6 |
| Challenger - Monterrey | 2020/03/02 18:40 | Oscar Jose Gutierrez v Collin Altamirano | 3-6,4-6 |
| Challenger - Morelos | 2020/02/19 02:55 | Oscar Jose Gutierrez v Thomaz Bellucci | 6-4,3-6,2-6 |