Stadium: Quadra Central Round: 14 Ground: Clay
| ITF Brazil F9 | 2018/11/13 13:20 | Rafael Matos v Gabriel P Tumasonis | 7-6,6-1 |
| ITF M15 Brasilia | 2021/11/04 13:00 | Eduardo Ribeiro v Gabriel P Tumasonis | 6-2,6-1 |
| ITF M15 Brasilia | 2021/11/03 12:00 | Lucas Obeid v Gabriel P Tumasonis | 2-6,1-6 |
| 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 |
| Challenger Florianopolis | 2021/12/05 13:55 | Martin Cuevas v Rafael Matos | 6-1,3-6,0-6 |
| Challenger Sao Paulo | 2021/11/28 17:15 | Luciano Darderi v Rafael Matos | 6-3,6-3 |
| Challenger Brasilia | 2021/11/22 14:25 | Luciano Darderi v Rafael Matos | 7-6,2-6,6-3 |
| Challenger Brasilia | 2021/11/21 21:50 | Luca Margaroli v Rafael Matos | 4-6,3-6 |
| Challenger Montevideo | 2021/11/07 15:00 | Nicolas Alvarez Varona v Rafael Matos | 6-2,6-2 |
| Challenger Buenos Aires | 2021/10/18 15:00 | Francisco Comesana v Rafael Matos | 6-4,6-1 |
| Challenger Buenos Aires | 2021/10/17 14:00 | Francisco Llanes v Rafael Matos | 0-6,6-4,1-6 |
| Challenger Santiago | 2021/10/12 14:00 | Rafael Matos v Diego F Flores | 2-6,6-4,4-6 |