Stadium: Court 1 Round: 19 Ground: Clay
| Challenger - Rio de Janeiro | 2021/12/12 16:00 | Nicolas Barrientos v Joao Giannella | 6-1,6-2 |
| Challenger - Florianopolis | 2021/12/10 15:30 | Nicolas Barrientos v Genaro Alberto Olivieri | 2-6,4-6 |
| Challenger - Florianopolis | 2021/12/09 13:00 | Nicolas Barrientos v Gonzalo Villanueva | 7-6,6-1 |
| Challenger - Florianopolis | 2021/12/07 16:50 | Juan Pablo Ficovich v Nicolas Barrientos | 3-6,0-6 |
| Challenger - Florianopolis | 2021/12/06 14:20 | Alejandro Gomez v Nicolas Barrientos | 4-6,2-6 |
| Challenger - Florianopolis | 2021/12/05 15:25 | Victor Tosetto v Nicolas Barrientos | 1-6,1-6 |
| Challenger - Guayaquil | 2021/11/01 16:00 | Nicolas Alvarez v Nicolas Barrientos | 2-6,6-4,6-4 |
| Challenger - Guayaquil | 2021/10/31 18:30 | Nicolas Barrientos v Alejandro Gomez | 7-6,6-4 |
| Challenger - Rio de Janeiro | 2021/12/12 16:00 | Jamie Cerretani v Pedro Boscardin Dias | 1-6,4-6 |
| Challenger - Florianopolis | 2021/12/07 16:05 | Pedro Boscardin Dias v Gonzalo Villanueva | 6-4,5-7,2-6 |
| ITF M25 - Rio do Sul | 2021/10/24 16:10 | Pedro Boscardin Dias v Gustavo Heide | 7-6,6-4 |
| ITF M25 - Rio do Sul | 2021/10/23 16:00 | Pedro Boscardin Dias v Facundo Juarez | 6-3,6-4 |
| ITF M25 - Rio do Sul | 2021/10/22 14:20 | Pedro Boscardin Dias v Marcelo Zormann | 6-3,5-7,6-3 |
| ITF M25 - Rio do Sul | 2021/10/21 14:50 | Gilbert S K Junior v Pedro Boscardin Dias | 6-2,3-6,2-6 |
| ITF M25 - Rio do Sul | 2021/10/20 17:05 | Pedro Boscardin Dias v Gabriel Roveri Sidney | 6-4,6-2 |
| ITF M15 - Recife | 2021/09/25 16:00 | Pedro Boscardin Dias v Jose Pereira | 6-7,3-6 |