Stadium: Cancha 12 Round: 25 Ground: Clay
| ITF - Lima M25 | 2021/10/07 20:20 | Michel Vernier v Joao Lucas Reis da Silva | 6-4,6-7,6-1 |
| ITF - Lima M25 | 2021/10/05 15:00 | Ignacio Buse v Joao Lucas Reis da Silva | 1-6,5-7 |
| ITF - Recife M15 | 2021/09/22 19:30 | Joao Lucas Reis da Silva v Eduardo Ribeiro | 1-6,7-5,4-6 |
| ITF - Medellin M25 | 2021/09/19 15:00 | Gilbert S K Junior v Joao Lucas Reis da Silva | 6-2,6-2 |
| ITF - Medellin M25 | 2021/09/18 15:00 | Gerardo L Villasenor v Joao Lucas Reis da Silva | 2-6,6-7 |
| ITF - Medellin M25 | 2021/09/17 14:50 | Juan Sebastian Gomez v Joao Lucas Reis da Silva | 1-6,4-6 |
| ITF - Medellin M25 | 2021/09/16 16:25 | Daniel Antonio Nunez v Joao Lucas Reis da Silva | 5-7,4-6 |
| ITF - Medellin M25 | 2021/09/14 19:40 | Johan A Rodriguez Rodriguez v Joao Lucas Reis da Silva | 3-6,1-6 |
| ITF - Lima M25 | 2021/10/08 16:30 | Murkel Dellien v Daniel Dutra Da Silva | 2-6,1-6 |
| ITF - Lima M25 | 2021/10/07 17:25 | Arklon H D Pino v Murkel Dellien | 3-6,3-6 |
| ITF - Lima M25 | 2021/10/05 15:00 | Duilio Vallebuona v Murkel Dellien | 1-6,4-6 |
| ITF - Cancun M15 | 2021/09/23 14:00 | Federico Agustin Gomez v Murkel Dellien | 6-0,6-3 |
| ITF - Cancun M15 | 2021/09/22 14:00 | Murkel Dellien v Nikolas Moceanu | 6-3,6-3 |
| Puchar Davisa | 2021/09/19 19:45 | Murkel Dellien v Ruben Bemelmans | 6-7,2-6 |
| Puchar Davisa | 2021/09/18 16:35 | Murkel Dellien v Zizou Bergs | 6-4,4-6,6-2 |
| ITF - Ibague M15 | 2021/09/07 19:45 | Murkel Dellien v Gerardo L Villasenor | 4-6,6-7 |