| Challenger Curitiba | 10/25 14:00 | 26 | [326] Joao Lucas Reis da Silva v Hugo Dellien [129] | 2-6,3-6 | |
| Challenger Curitiba | 10/24 13:00 | 25 | [326] Joao Lucas Reis da Silva v Arklon H D P Cordova [247] | 6-4,6-4 | |
| Challenger - Buenos Aires | 10/12 18:00 | 26 | [83] Federico Coria v Joao L R D Silva [283] | 6-1,6-3 | |
| Challenger - Buenos Aires | 10/10 15:45 | 25 | [160] Facundo Bagnis v Joao L R D Silva [283] | 7-6,5-7,6-7 | |
| Challenger - Buenos Aires | 10/09 17:45 | 19 | [283] Joao L R D Silva v Alvaro G Meza [369] | 7-6,7-6 | |
| Challenger - Buenos Aires | 10/08 19:05 | 14 | Joao L R D Silva v Sebastian Prechtel | 6-3,6-4 | |
| Challenger - Buenos Aires | 10/08 17:00 | 14 | Joao L R D Silva v Facundo Mena | Cancelled | |
| Challenger - Campinas | 10/02 20:00 | 25 | [281] Joao Lucas Reis da Silva v Jan Choinski [128] | 6-4,2-6,1-6 | |
| Challenger - Bogota | 09/25 19:55 | 25 | [367] Viktor Durasovic v Joao Lucas Reis da Silva [304] | 6-3,4-6,6-3 | |
| Challenger Antofagasta | 09/22 17:30 | 27 | [304] Joao L R Da Silva v Tristan Boyer [370] | 6-7,2-6 | |
| Challenger Antofagasta | 09/21 14:30 | 26 | [143] Hugo Dellien v Joao L R Da Silva [304] | 6-3,6-7,5-7 | |
| Challenger Antofagasta | 09/19 18:30 | 25 | [210] Andrea Collarini v Joao L R Da Silva [304] | 6-7,2-6 | |
| Challenger Santa Cruz | 09/14 19:00 | 26 | [352] Pedro Sakamoto v Joao Lucas Reis da Silva [309] | 4-6,7-6,6-2 | |
| Challenger Santa Cruz | 09/13 00:00 | 25 | [309] Joao Lucas Reis da Silva v Luciano Darderi [177] | 6-4,6-3 | |
| Challenger - Lima | 08/23 17:50 | 26 | [244] Arklon H D P Cordova v Joao Lucas Reis da Silva [304] | 7-5,2-6,6-2 | |
| Challenger - Lima | 08/21 20:15 | 25 | [499] Wilson Leite v Joao Lucas Reis da Silva [304] | 1-6,3-6 | |
| Challenger Santo Domingo - kval | 08/09 20:25 | 26 | [288] Joao Lucas Reis da Silva v Bernard Tomic [326] | 7-5,4-6,4-6 | |
| Challenger Santo Domingo - kval | 08/09 01:10 | 25 | Joao Lucas Reis da Silva v Justin Roberts | 6-4,6-4 | |
| Challenger - Liberec | 07/31 12:10 | 25 | [286] Joao Lucas Reis da Silva v Lukas Klein [151] | 1-6,2-6 | |
| Challenger Zug | 07/23 13:20 | 14 | [283] Joao Lucas Reis da Silva v Gianmarco Ferrari [430] | 3-6,6-7 | |
| Challenger - Tampere | 07/20 11:10 | 26 | [231] Sumit Nagal v Joao L R D Silva [283] | 6-3,6-7,7-6 | |
| Challenger - Tampere | 07/18 12:00 | 25 | [283] Joao L R D Silva v Benjamin Hassan [251] | 5-7,6-4,6-3 | |
| Challenger - Medellin | 06/27 16:30 | 25 | [283] Joao Lucas Reis da Silva v Benjamin Lock [372] | 3-6,1-6 | |
| Challenger - Cali | 06/19 22:25 | 25 | [273] Joao Lucas Reis da Silva v Gerald Melzer [391] | 3-6,6-3,3-6 | |
| Challenger Palmas del Mar | 06/14 15:00 | 26 | [265] Joao Lucas Reis da Silva v Alexis Galarneau [224] | 6-7,0-6 | |
| Challenger Palmas del Mar | 06/12 20:35 | 25 | [308] Denis Yevseyev v Joao Lucas Reis da Silva [265] | 7-5,4-6,5-7 | |
| Challenger Tyler | 06/05 20:40 | 25 | Joao L R D Silva v Adam Neff | 6-4,2-6,3-6 | |
| Challenger Little Rock | 06/01 18:40 | 26 | [272] Joao Lucas Reis da Silva v Adam Walton [288] | 6-3,6-7,4-6 | |
| Challenger Little Rock | 05/30 15:00 | 25 | [319] Maks Kasnikowski v Joao Lucas Reis da Silva [272] | 2-6,3-6 | |
| Challenger Coquimbo | 05/06 18:00 | 29 | [282] Joao Lucas Reis da Silva v Matheus P De Almeida [293] | 6-7,7-6,4-6 |