| ITF M15 Cancun | 06/25 15:00 | 25 | Ortega, Joao Victor v Hernandez Serrano, Juan Alejandro | 0-6,0-6 | |
| ITF M15 Cancun | 06/11 16:05 | 25 | Huertas Del Pino Cordova, Arklon v Hernandez Serrano, Juan Alejandro | Retired | |
| ITF M15 Cancun | 05/30 15:05 | 26 | Hernandez Serrano, Juan Alejandro v Brandon Walkin | 4-6,4-6 | |
| ITF M15 Cancun | 05/29 13:30 | 25 | Hernandez Serrano, Juan Alejandro v Mendoza, Alejandro | 6-2,6-1 | |
| Challenger - San Luis Potosí | 04/15 16:00 | 166 | Verbeek, Sem v Hernandez Serrano, Juan Alejandro | 7-5,6-7,6-3 | |
| ITF M15 Cancun | 03/26 15:30 | 25 | Harrison Adams v Hernandez Serrano, Juan Alejandro | 7-5,7-5 | |
| ITF M15 Cancun | 03/19 19:00 | 25 | Olivares, Jose v Hernandez Serrano, Juan Alejandro | 7-6,4-6,6-3 | |
| ITF M15 Cancun | 03/16 13:30 | 28 | Naoki Nakagawa v Hernandez Serrano, Juan Alejandro | 6-4,6-2 | |
| ITF M15 Cancun | 03/15 13:00 | 27 | Hernandez Serrano, Juan Alejandro v Harrison Adams | 6-4,6-4 | |
| ITF M15 Cancun | 03/14 13:00 | 26 | Hernandez Serrano, Juan Alejandro v Newman, Baker | 6-3,4-6,6-3 | |
| ITF M15 Cancun | 03/12 19:40 | 25 | Aidan Mchugh v Hernandez Serrano, Juan Alejandro | 0-6,5-7 | |
| ATP - Acapulco | 02/23 23:20 | 64 | Harrison, Ryan v Hernandez Serrano, Juan Alejandro | 7-5,6-2 | |
| Challenger - Morelos | 02/19 16:00 | 24 | Renzo Olivo v Hernandez Serrano, Juan Alejandro | 6-4,6-1 | |
| ITF USA F35 | 12/04 19:40 | 25 | Hernandez Serrano, Juan Alejandro v El Midhawy, Adam | 5-7,4-6 | |
| ITF USA F32 | 11/16 16:00 | 26 | Hernandez Serrano, Juan Alejandro v Nuno Borges | 2-6,1-6 | |
| ITF USA F32 | 11/15 18:30 | 25 | Cabrera, Juan Ignacio v Hernandez Serrano, Juan Alejandro | 2-6,3-6 | |
| ITF USA F30 | 11/08 18:30 | 26 | Hernandez Serrano, Juan Alejandro v Johnson, Trevor Allen | 6-7,0-6 | |
| ITF USA F30 | 11/07 16:45 | 25 | Hernandez Serrano, Juan Alejandro v Grinvalds, Roberts | 6-4,6-2 | |
| ITF USA F28B | 10/23 17:35 | 25 | Hernandez Serrano, Juan Alejandro v Yshai Oliel | 0-6,2-6 | |
| ITF USA F28B | 10/22 17:05 | 62 | Hernandez Serrano, Juan Alejandro v Rollins, Pierce | 6-3,6-1 | |
| ITF USA F23 | 08/16 14:00 | 26 | Hernandez Serrano, Juan Alejandro v Gomez, Alejandro | 6-7,3-6 | |
| ITF USA F23 | 08/15 14:00 | 25 | Hernandez Serrano, Juan Alejandro v Maxime Cressy | 7-6,2-6,6-3 | |
| ITF USA F18 | 06/28 14:00 | 26 | Andres Andrade v Hernandez Serrano, Juan Alejandro | 7-5,6-0 | |
| ITF USA F18 | 06/27 18:00 | 25 | Hernandez Serrano, Juan Alejandro v Callahan, Hunter | 6-2,6-2 | |
| ITF Mexico F3 | 05/21 17:00 | 25 | Gonzalez, Wilfredo v Hernandez Serrano, Juan Alejandro | 7-6,6-2 | |
| ITF Mexico F2 | 05/15 18:20 | 25 | Hernandez Serrano, Juan Alejandro v Diaz-Figueroa, Christopher | 6-3,5-7,3-6 | |
| ITF Mexico F1 | 05/10 20:20 | 26 | Monette, Samuel v Hernandez Serrano, Juan Alejandro | 5-7,6-1,6-4 | |
| ITF Mexico F1 | 05/08 17:00 | 25 | Jody Maginley v Hernandez Serrano, Juan Alejandro | 4-6,2-6 | |
| Challenger Puerto Vallarta Qual | 04/29 20:05 | 46 | Gomez, Lucas v Hernandez Serrano, Juan Alejandro | 6-2,6-1 | |
| Challenger Puerto Vallarta Qual | 04/28 23:05 | 45 | Hernandez Serrano, Juan Alejandro v Federico Zeballos | 6-4,6-3 |