Stadium: Court 5 Round: 26 Ground: Clay
| ITF M25 Rio do Sul | 2021/10/20 14:45 | Gilbert S K Junior v Mateo Barreiros Reyes | 3-6,6-1,6-2 |
| ITF M25 Lima | 2021/10/17 15:00 | Gilbert S K Junior v Daniel Dutra Da Silva | 7-6,6-3 |
| ITF M25 Lima | 2021/10/16 16:40 | Gilbert S K Junior v Jonathan Mridha | 6-4,6-3 |
| ITF M25 Lima | 2021/10/14 16:30 | Federico Zeballos v Gilbert S K Junior | 6-2,3-6,4-6 |
| ITF M25 Lima | 2021/10/12 17:00 | Antonio Cayetano March v Gilbert S K Junior | 3-6,3-6 |
| Challenger Santiago | 2021/10/03 19:50 | Gilbert S K Junior v Carlos Gomez-Herrera | 6-3,2-6,3-6 |
| ITF M25 Medellin | 2021/09/19 15:00 | Gilbert S K Junior v Joao Lucas Reis da Silva | 6-2,6-2 |
| ITF M25 Medellin | 2021/09/18 14:50 | Pedro Sakamoto v Gilbert S K Junior | 3-6,6-7 |
| 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 |
| ITF M15 Recife | 2021/09/24 14:00 | Pedro Boscardin Dias v Wilson Leite | 7-6,7-6 |
| ITF M15 Recife | 2021/09/23 13:30 | Pedro Boscardin Dias v Enrique Bogo | 7-6,6-1 |
| ITF M15 Recife | 2021/09/21 22:40 | Pedro Boscardin Dias v Mateo Barreiros Reyes | 6-2,6-2 |
| ITF M25 Medellin | 2021/09/16 15:00 | Pedro Boscardin Dias v Juan A H Serrano | 3-6,4-6 |
| ITF M25 Medellin | 2021/09/15 16:35 | Pedro Boscardin Dias v Gustavo Heide | 6-3,3-6,6-3 |
| ITF M15 Ibague | 2021/09/09 16:10 | Pedro Boscardin Dias v Gustavo Heide | 1-6,1-6 |