Stadium: Stadium Court Round: 26 Ground: Hardcourt outdoor
| UTR Pro Tennis Series Barcelona | 2021/06/12 11:30 | Marcelo Zormann v Oscar Jose Gutierrez | 3-0 |
| ITF Brazil F3 | 2018/05/13 13:30 | Oscar Jose Gutierrez v Marcelo Zormann | 6-2,6-2 |
| ITF M15 Recife | 2021/09/22 16:45 | Marcelo Zormann v Bruno Fernandez | 6-3,6-1 |
| UTR Pro Tennis Series Ricany | 2021/09/08 09:00 | Dominik Kellovsky v Marcelo Zormann | 6-4,5-1 |
| UTR Pro Tennis Series Ricany | 2021/09/07 10:30 | Martins Podzus v Marcelo Zormann | 3-6,6-3,7-6 |
| ITF M25 Říčany | 2021/09/01 08:00 | Marcelo Zormann v Hernan Casanova | 3-6,4-6 |
| ITF M25 Říčany | 2021/08/31 08:00 | Adam Kozler v Marcelo Zormann | 1-6,2-6 |
| ITF M25 Říčany | 2021/08/30 09:00 | Marcelo Zormann v Krystof Zapsky | 6-2,6-3 |
| ITF M25 Říčany | 2021/08/29 10:30 | Giovanni Agostinetto v Marcelo Zormann | 3-6,4-6 |
| ITF M25 Poznań | 2021/08/25 12:50 | Matias Zukas v Marcelo Zormann | 6-3,4-6,7-6 |
| ITF M15 Recife | 2021/09/22 13:00 | Christian Oliveira v Oscar Jose Gutierrez | 3-6,0-6 |
| ITF M25 Madrid | 2021/09/16 11:45 | Pablo Llamas Ruiz v Oscar Jose Gutierrez | 6-3,6-3 |
| ITF M25 Madrid | 2021/09/14 09:00 | Pol Toledo Bague v Oscar Jose Gutierrez | 3-6,2-6 |
| ITF M25 Oviedo | 2021/09/02 09:00 | Oscar Jose Gutierrez v Alejandro Garcia | 2-6,3-6 |
| ITF M25 Oviedo | 2021/09/01 12:40 | Oscar Jose Gutierrez v Diego A B Sanchez | 6-3,7-5 |
| ITF M25 Oviedo | 2021/08/31 10:15 | Oscar Jose Gutierrez v Juan Bautista Torres | 6-3,6-4 |
| ITF M25 Santander | 2021/08/27 10:30 | Imanol L Morillo v Oscar Jose Gutierrez | 6-3,6-3 |
| ITF M25 Santander | 2021/08/26 09:00 | Andrey Chepelev v Oscar Jose Gutierrez | 3-6,5-7 |