Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 Recife | 2021/09/21 17:10 | Natan Rodrigues v Gustavo Heide | 1-6,3-6 |
| ITF M15 Castelo Branco | 2021/07/28 17:15 | Raphael Lambling v Natan Rodrigues | 6-2,6-3 |
| ITF M25 Idanha-A-Nova | 2021/07/20 13:50 | Natan Rodrigues v Luis Faria | 3-6,3-6 |
| ITF M25 Idanha-A-Nova | 2021/07/13 14:15 | Takuto Niki v Natan Rodrigues | 6-2,6-2 |
| ITF M15 Monastir | 2021/04/06 09:00 | Pedro Boscardin Dias v Natan Rodrigues | 6-7,7-6,6-1 |
| ITF M15 Monastir | 2021/03/30 10:30 | Sho Shimabukuro v Natan Rodrigues | 6-3,5-7,6-2 |
| ITF M15 Monastir | 2021/03/18 08:30 | Natan Rodrigues v Yanais Laurent | 3-6,6-4,3-6 |
| ITF M15 Monastir | 2021/03/16 10:25 | Viktor Jovic v Natan Rodrigues | 6-3,6-7,5-7 |
| ITF M15 Brasilia | 2021/11/02 12:00 | Gabriel P Tumasonis v Eduardo Lacalle | 6-3,4-6,11-9 |
| ITF M15 Brasilia | 2021/11/01 12:00 | Sean Hess v Gabriel P Tumasonis | 1-6,6-4,8-10 |
| ITF M25 Rio do Sul | 2021/10/18 20:10 | Pedro Cressoni v Gabriel P Tumasonis | 7-5,6-4 |
| ITF M15 Recife | 2021/09/22 17:00 | Gabriel P Tumasonis v Asdrubal Gobernate | 2-6,3-6 |
| ITF M15 Recife | 2021/09/20 13:00 | Victor Bertoldo v Gabriel P Tumasonis | 3-6,3-6 |
| ITF M15 Sao Paulo | 2019/10/14 14:00 | Andre Miele v Gabriel P Tumasonis | 6-0,6-2 |
| ITF Brazil F9 | 2018/11/13 13:20 | Rafael Matos v Gabriel P Tumasonis | 7-6,6-1 |
| ITF Brazil F9 | 2018/11/12 13:35 | Gabriel P Tumasonis v Lucas Bernardo | 6-4,6-1 |