| 1. Round | 18/10/2020 | Atlético Madrid B | - | UD Poblense | 1:0 |  |
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| 2. Round | 25/10/2020 | Inter de Madrid | - | Atlético Madrid B | 3:1 | ||||
| 4. Round | 08/11/2020 | Atlético Madrid B | - | UD SS Reyes | 1:2 | ||||
| 5. Round | 22/11/2020 | Las Rozas CF | - | Atlético Madrid B | 2:1 | |
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| 7. Round | 06/12/2020 | Rayo Majadahonda | - | Atlético Madrid B | 1:0 | ||||
| 8. Round | 13/12/2020 | Atlético Madrid B | - | Real Madrid Castilla | 1:2 | ||||
| 6. Round | 23/12/2020 | Atlético Madrid B | - | Getafe CF B | 0:0 | ||||
| 10. Round | 17/01/2021 | UD Poblense | - | Atlético Madrid B | 1:1 | |
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| 11. Round | 24/01/2021 | Atlético Madrid B | - | Inter de Madrid | 0:0 | ||||
| 12. Round | 31/01/2021 | Atlético Madrid B | - | Atlético Baleares | 1:0 | |
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| 9. Round | 10/02/2021 | CDA Navalcarnero | - | Atlético Madrid B | 1:1 | ||||
| 14. Round | 14/02/2021 | Atlético Madrid B | - | Las Rozas CF | 0:0 | |
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| 15. Round | 21/02/2021 | Getafe CF B | - | Atlético Madrid B | 1:3 | ||||
| 16. Round | 07/03/2021 | Atlético Madrid B | - | Rayo Majadahonda | 1:0 | |
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| 17. Round | 14/03/2021 | Real Madrid Castilla | - | Atlético Madrid B | 3:1 | |
Spain