Stadium: Court 3 Round: 25 Ground: Clay
| Binghamton, USA | 2019/07/23 18:30 | Preston Brown v Maxime Cressy | 3-6,4-6 |
| ITF M15 Cancun | 2019/07/17 15:05 | Preston Brown v Reyes, Nicholas Alexander | 2-6,4-6 |
| ITF M15 Cancun | 2019/06/25 13:30 | Sigouin, Benjamin v Preston Brown | 7-5,6-0 |
| ITF M15 Champaign | 2019/06/03 15:00 | Preston Brown v Gomes, Gui | 2-6,2-6 |
| ITF M15 Cancun | 2019/05/27 18:00 | Valencia, Alejandro v Preston Brown | 3-6,6-4,10-3 |
| ITF M15 Cancun | 2019/05/27 15:30 | Sikman, Philip v Preston Brown | 1-6,2-6 |
| ITF M15 Cancun | 2019/05/20 13:30 | Smith, Errol v Preston Brown | 4-6,6-1,10-8 |
| ITF M15 Cancun | 2019/05/13 13:30 | Preston Brown v Jesse Flores | 4-6,4-6 |
| Buenos Aires, Singles Qualifying M-ITF-ARG-22A | 2019/07/10 18:10 | Bramajo, Santiago v Postay, Alan | 6-2,6-3 |
| Buenos Aires, Singles M-ITF-ARG-06B | 2019/07/01 12:00 | Iamachkine, Pedro v Postay, Alan | 6-2,6-2 |
| Buenos Aires, Singles Qualifying M-ITF-ARG-22A | 2019/05/06 13:00 | Moreno, Federico v Postay, Alan | 6-2,6-3 |
| Buenos Aires, Singles Qualifying M-ITF-ARG-22A | 2019/04/30 12:00 | Da Silva, Gabriel Ciro v Postay, Alan | 7-6,6-2 |
| Pinamar, Singles Qualifying M-ITF-ARG-03A | 2019/04/01 13:00 | Vilaro, Alejo v Postay, Alan | 6-0,7-6 |
| Pinamar, Singles Qualifying M-ITF-ARG-03A | 2019/03/18 15:00 | Francisco Comesana v Postay, Alan | 6-3,6-4 |
| ITF Chile F2 | 2018/11/19 15:00 | Hidalgo, Gabriel Alejandro v Postay, Alan | 6-2,6-0 |
| ITF Argentina F9 | 2018/11/13 12:30 | Conner Huertas Del Pino v Postay, Alan | 6-4,6-2 |