| 5. Jornada | 18.08.2021 | Cruz Azul [Sub 18] | - | CF Monterrey [Sub 18] | 1:1 | ||||
| 7. Jornada | 27.08.2021 | Club Tijuana [Sub 18] | - | CF Monterrey [Sub 18] | 0:0 | ||||
| 8. Jornada | 11.09.2021 | Atlas Guadalajara [Sub 18] | - | CF Monterrey [Sub 18] | 4:0 | ||||
| 9. Jornada | 19.09.2021 | CF Monterrey [Sub 18] | - | UANL Tigres [Sub 18] | 0:1 |
México