| 1. Jornada | 13.09.2020 | Real Oviedo | - | FC Cartagena | 0:0 |  |
|||
| 2. Jornada | 20.09.2020 | FC Cartagena | - | Sporting | 0:1 | ||||
| 3. Jornada | 27.09.2020 | Leganés | - | FC Cartagena | 3:1 | ||||
| 4. Jornada | 04.10.2020 | FC Cartagena | - | Lugo | 2:1 | ||||
| 5. Jornada | 11.10.2020 | Ponferradina | - | FC Cartagena | 0:2 | ||||
| 6. Jornada | 17.10.2020 | FC Cartagena | - | CF Fuenlabrada | 1:1 | ||||
| 7. Jornada | 21.10.2020 | Almería | - | FC Cartagena | 1:1 | ||||
| 8. Jornada | 24.10.2020 | FC Cartagena | - | Las Palmas | 3:0 |  |
|||
| 9. Jornada | 27.10.2020 | Girona | - | FC Cartagena | 2:1 |  |
|||
| 12. Jornada | 15.11.2020 | CD Castellón | - | FC Cartagena | 2:1 | ||||
| 13. Jornada | 21.11.2020 | Mirandés | - | FC Cartagena | 4:1 | ||||
| 14. Jornada | 25.11.2020 | FC Cartagena | - | Mallorca | 1:2 | ||||
| 16. Jornada | 02.12.2020 | FC Cartagena | - | Espanyol | 1:3 | ||||
| 21. Jornada | 10.01.2021 | Tenerife | - | FC Cartagena | 3:0 | |
España