| ATP Rio De Janeiro | 02/18 19:00 | 14 | [88] Facundo Bagnis v Joao L R Da Silva [302] | 4-6,6-3,6-2 | |
| Challenger Concepcion | 01/24 14:40 | 25 | [311] Joao Lucas Reis da Silva v Facundo D Acosta [203] | 4-6,6-3,3-6 | |
| Challenger Concepcion | 01/23 14:00 | 19 | [282] Alexander Merino v Joao Lucas Reis da Silva [311] | 0-6,3-6 | |
| Challenger Concepcion | 01/22 13:00 | 14 | [229] Jakub Paul v Joao Lucas Reis da Silva [311] | 4-6,6-3,1-6 | |
| Challenger Piracicaba | 01/16 19:50 | 25 | [311] Joao Lucas Reis da Silva v Evan Zhu [296] | 6-4,4-6,3-6 | |
| Challenger Tigre | 01/11 17:40 | 26 | [316] Joao Lucas Reis da Silva v Terence Atmane [297] | 3-6,2-6 | |
| Challenger Tigre | 01/09 18:10 | 25 | [272] Oriol Roca Batalla v Joao Lucas Reis da Silva [316] | 2-6,5-7 | |
| Challenger Temuco | 11/24 17:45 | 26 | [328] Joao Lucas Reis da Silva v Nicolas Kicker [201] | 6-3,4-6,3-6 | |
| Challenger Temuco | 11/22 13:00 | 25 | [328] Joao Lucas Reis da Silva v Juan Ignacio Galarza [356] | 6-4,5-7,6-3 | |
| Challenger Sao Leopoldo | 11/18 13:30 | 27 | [341] Joao Lucas Reis da Silva v Thiago Seyboth Wild [404] | 2-6,5-7 | |
| Challenger Sao Leopoldo | 11/17 13:30 | 26 | [460] Mateus Alves v Joao Lucas Reis da Silva [341] | 6-7,1-6 | |
| Challenger Sao Leopoldo | 11/16 13:00 | 25 | [341] Joao Lucas Reis da Silva v Juan Pablo Paz [405] | 6-3,6-2 | |
| Challenger Montevideo | 11/07 17:45 | 19 | [340] Joao Lucas Reis da Silva v Juan Pablo Paz [409] | 4-6,1-6 | |
| Challenger Montevideo | 11/06 15:00 | 14 | [343] Joao Lucas Reis da Silva v Ignacio Carou [234] | 6-1,6-3 | |
| Challenger Lima | 10/25 17:05 | 25 | [329] Roman A Burruchaga v Joao Lucas Reis da Silva [347] | 6-7,7-6,6-3 | |
| Challenger Lima | 10/25 15:00 | 25 | Juan Manuel Cerundolo v Joao Lucas Reis da Silva | Cancelled | |
| Challenger Ambato | 10/23 17:30 | 29 | [448] Joao Lucas Reis da Silva v Facundo Bagnis [114] | 6-7,4-6 | |
| Challenger Ambato | 10/22 19:00 | 28 | [123] Juan Pablo Varillas v Joao Lucas Reis da Silva [448] | 4-6,4-6 | |
| Challenger Ambato | 10/21 17:45 | 27 | [448] Joao Lucas Reis da Silva v Miljan Zekic [245] | 7-6,6-1 | |
| Challenger Ambato | 10/19 15:00 | 26 | [448] Joao Lucas Reis da Silva v Nicolas Alvarez [305] | 5-7,6-1,6-4 | |
| Challenger Ambato | 10/18 15:00 | 25 | [143] Juan Pablo Ficovich v Joao Lucas Reis da Silva [448] | 6-7,4-6 | |
| Challenger Rio De Janeiro | 10/10 16:55 | 25 | [166] Yannick Hanfmann v Joao Lucas Reis da Silva [449] | 6-1,6-1 | |
| Challenger Campinas | 10/02 17:10 | 14 | [482] Wilson Leite v Joao Lucas Reis da Silva [443] | 4-6,6-0,6-4 | |
| Challenger Buenos Aires | 09/26 14:00 | 19 | [374] Thiago Seyboth Wild v Joao L R Da Silva [443] | 6-4,6-4 | |
| Challenger Buenos Aires | 09/25 15:00 | 14 | Nicolas G Longo v Joao L R Da Silva | 2-6,2-6 | |
| Challenger Villa Maria | 09/19 17:45 | 19 | [423] Joao Lucas Reis da Silva v Orlando Luz [188] | 3-6,3-6 | |
| Challenger Villa Maria | 09/18 18:15 | 14 | [418] Joao Lucas Reis da Silva v Guido Andreozzi [273] | 6-2,5-7,7-6 | |
| ITF M25 Santander | 08/23 08:00 | 25 | Mario Mansilla Diez v Joao Lucas Reis da Silva | Cancelled | |
| ITF M15 Recife | 08/21 13:30 | 29 | Eduardo Ribeiro v Joao Lucas Reis da Silva | 3-6,6-3,6-4 | |
| ITF M15 Recife | 08/20 15:30 | 28 | [468] Joao Lucas Reis da Silva v Ignacio Carou [244] | 6-7,6-1,6-2 |