| 3. Round | 08/09/2019 | Rayo Majadahonda | - | Atlético Baleares | 2:1 | ||||
| 4. Round | 15/09/2019 | Real Oviedo B | - | Rayo Majadahonda | 2:2 |  |
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| 7. Round | 06/10/2019 | Rayo Majadahonda | - | Getafe CF B | 2:0 | ||||
| 8. Round | 13/10/2019 | RC Celta B | - | Rayo Majadahonda | 0:1 | ||||
| 9. Round | 20/10/2019 | Rayo Majadahonda | - | UD Melilla | 2:2 | ||||
| 10. Round | 27/10/2019 | Las Rozas CF | - | Rayo Majadahonda | 1:1 | ||||
| 11. Round | 03/11/2019 | Rayo Majadahonda | - | Marino de Luanco | 2:1 | ||||
| 14. Round | 24/11/2019 | UD Las Palmas B | - | Rayo Majadahonda | 0:0 | ||||
| 15. Round | 01/12/2019 | CF Internacional | - | Rayo Majadahonda | 1:2 |  |
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| 16. Round | 08/12/2019 | Rayo Majadahonda | - | UD SS Reyes | 1:0 | ||||
| 17. Round | 14/12/2019 | Pontevedra CF | - | Rayo Majadahonda | 2:1 | ||||
| 19. Round | 04/01/2020 | Racing Ferrol | - | Rayo Majadahonda | 0:3 | ||||
| 22. Round | 26/01/2020 | Atlético Baleares | - | Rayo Majadahonda | 1:0 | ||||
| 23. Round | 02/02/2020 | Rayo Majadahonda | - | Real Oviedo B | 1:1 | ||||
| 24. Round | 09/02/2020 | Atlético Madrid B | - | Rayo Majadahonda | 0:1 | ||||
| 27. Round | 01/03/2020 | Rayo Majadahonda | - | RC Celta B | 1:2 | ||||
| 28. Round | 08/03/2020 | UD Melilla | - | Rayo Majadahonda | 0:3 | |
Spain