Stadium: Court 7 Round: 29 Ground: Hardcourt outdoor
| ITF M15 Cancun | 2019/11/09 14:00 | Paul Jubb v Sinclair, Colin | 3-6,2-6 |
| ITF M15 Cancun | 2019/11/08 16:00 | Hank, Tigre v Sinclair, Colin | 3-6,4-6 |
| ITF M15 Cancun | 2019/11/06 18:55 | Conner Huertas Del Pino v Sinclair, Colin | 1-6,6-7 |
| Waco, Singles M-ITF-USA-41A | 2019/10/17 16:00 | Sinclair, Colin v Alex Rybakov | 1-6,5-7 |
| Waco, Singles M-ITF-USA-41A | 2019/10/16 16:50 | Sinclair, Colin v Farren, Connor | 6-3,6-4 |
| Challenger Fairfield | 2019/10/07 22:00 | Sinclair, Colin v Velotti, Agustin | 7-6,6-7,4-6 |
| Challenger Tiburon | 2019/09/23 21:20 | Pervolarakis, Michail v Sinclair, Colin | 6-3,7-6 |
| Columbus III, USA | 2019/09/17 15:40 | Sinclair, Colin v Erler, Alexander | 5-7,6-7 |
| ITF M15 Cancun | 2019/11/09 14:00 | Nick Chappell v Joao Lucas Reis da Silva | 7-5,1-6,3-6 |
| ITF M15 Cancun | 2019/11/08 14:00 | Joao Lucas Reis da Silva v Lopez Villasenor, Gerardo | 6-3,6-2 |
| ITF M15 Cancun | 2019/11/07 16:35 | Joao Lucas Reis da Silva v Daniel Antonio Nunez | 7-6,6-3 |
| Sao Paulo, Singles M-ITF-BRA-06A | 2019/10/16 13:50 | Malla, Bastian v Joao Lucas Reis da Silva | 6-2,6-2 |
| ITF M25 Rio de Janeiro | 2019/10/10 16:30 | Zukas, Matias v Joao Lucas Reis da Silva | 6-3,3-6,6-4 |
| Challenger Campinas | 2019/09/30 18:40 | Gonzalez, Alejandro v Joao Lucas Reis da Silva | 7-5,7-5 |
| ITF M15 Lambare | 2019/08/25 14:00 | Gonzalo Villanueva v Joao Lucas Reis da Silva | 6-1,6-3 |
| ITF M15 Lambare | 2019/08/24 17:05 | Echazu, Mauricio v Joao Lucas Reis da Silva | 2-6,5-7 |