| 2. Round | 25/10/2020 | Inter de Madrid | - | Atlético Madrid B | 3:1 | ||||
| 3. Round | 01/11/2020 | Atlético Baleares | - | Atlético Madrid B | 1:1 | ||||
| 4. Round | 08/11/2020 | Atlético Madrid B | - | UD SS Reyes | 1:2 | ||||
| 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 | ||||
| 13. Round | 07/02/2021 | UD SS Reyes | - | Atlético Madrid B | 2:0 | ||||
| 9. Round | 10/02/2021 | CDA Navalcarnero | - | Atlético Madrid B | 1:1 |  |
|||
| 17. Round | 14/03/2021 | Real Madrid Castilla | - | Atlético Madrid B | 3:1 | ||||
| 18. Round | 21/03/2021 | Atlético Madrid B | - | CDA Navalcarnero | 1:1 |
Spain