| UTR Pro Tennis Series Cancun | 2021/04/08 16:30 | Hernandez Serrano, Juan Alejandro v Manuel S Montemayor | 6-1,6-4 |
| UTR Pro Mexico City | 2023/04/27 21:00 | Hernandez Serrano, Juan Alejandro v Juan Sebastian Osorio | 6-1,6-7,2-6 |
| UTR Pro Mexico City | 2023/04/26 21:52 | Hernandez Serrano, Juan Alejandro v Estevez Maximiliano | 6-2,6-3 |
| UTR Pro Mexico City | 2023/04/26 18:00 | Hernandez Serrano, Juan Alejandro v Armando Sotelo | 7-6,4-6,6-0 |
| UTR Pro Mexico City | 2023/04/24 18:00 | Hernandez Serrano, Juan Alejandro v Chris Letcher | 7-6,5-4 |
| Challenger Guayaquil | 2021/10/31 16:00 | Hernandez Serrano, Juan Alejandro v Gonzalez, Alejandro | 0-6,2-6 |
| ITF M25 Guayaquil | 2021/10/29 15:00 | Hernandez Serrano, Juan Alejandro v Facundo Juarez | 3-6,4-6 |
| ITF M25 Guayaquil | 2021/10/28 18:35 | Hernandez Serrano, Juan Alejandro v Achondo, Gonzalo | 6-0,6-1 |
| ITF M25 Guayaquil | 2021/10/26 15:00 | Hernandez Serrano, Juan Alejandro v Santamaria, Felipe | 6-1,6-3 |
| UTR Pro Mexico City | 2023/04/28 20:19 | Eduardo Yahir Orozco Rangel v Manuel S Montemayor | 0-6,2-6 |
| UTR Pro Mexico City | 2023/04/27 21:46 | Boris Arias v Manuel S Montemayor | 6-7,7-6,5-7 |
| UTR Pro Mexico City | 2023/04/26 18:00 | Ernesto Ruy Sanchez Pavon v Manuel S Montemayor | 0-6,4-6 |
| UTR Pro Mexico City | 2023/04/24 23:05 | Elizarraras, Emiliano v Manuel S Montemayor | 1-6,2-6 |
| UTR Pro Pozos | 2023/01/22 16:30 | Ignacio Buse v Manuel S Montemayor | 6-7,4-6 |
| UTR Pro Pozos | 2023/01/21 16:30 | Nicolas Buitrago v Manuel S Montemayor | 6-7,6-1,4-6 |
| UTR Pro Pozos | 2023/01/20 17:30 | Marshall Tutu v Manuel S Montemayor | 3-6,1-6 |
| UTR Pro Pozos | 2023/01/19 21:01 | Graham Maassen v Manuel S Montemayor | 2-6,3-5 |