| 1. Round | 26/07/2021 | Cruz Azul [U18] | - | Mazatlán FC [U18] | 1:1 | ||||
| 7. Round | 27/08/2021 | Mazatlán FC [U18] | - | Atlético San Luis [U18] | 5:1 | ||||
| 8. Round | 11/09/2021 | CF América [U18] | - | Mazatlán FC [U18] | 2:1 | ||||
| 9. Round | 18/09/2021 | Mazatlán FC [U18] | - | Pumas UNAM [U18] | 2:0 | ||||
| 10. Round | 24/09/2021 | Club Tijuana [U18] | - | Mazatlán FC [U18] | 1:2 |  |
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| 11. Round | 28/09/2021 | Mazatlán FC [U18] | - | FC Juárez [U18] | 3:2 | |
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| 12. Round | 02/10/2021 | Santos Laguna [U18] | - | Mazatlán FC [U18] | 3:0 | ||||
| 13. Round | 15/10/2021 | Mazatlán FC [U18] | - | Atlas Guadalajara [U18] | 1:1 | ||||
| 14. Round | 19/10/2021 | Puebla FC [U18] | - | Mazatlán FC [U18] | 0:2 | ||||
| 15. Round | 22/10/2021 | Mazatlán FC [U18] | - | Gallos Blancos [U18] | 2:0 | ||||
| 16. Round | 29/10/2021 | Club Necaxa [U18] | - | Mazatlán FC [U18] | 3:0 | ||||
| 17. Round | 05/11/2021 | Mazatlán FC [U18] | - | Deportivo Guadalajara [U18] | 2:1 |
Mexico