| 10. Ronde | 26.10.2019 | Athletic Club B | - | Real Valladolid B | 4:1 | ||||
| 12. Ronde | 10.11.2019 | Burgos CF | - | Athletic Club B | 2:0 | ||||
| 13. Ronde | 16.11.2019 | Athletic Club B | - | Unionistas CF | 4:1 | ||||
| 14. Ronde | 24.11.2019 | CD Guijuelo | - | Athletic Club B | 2:0 | ||||
| 15. Ronde | 01.12.2019 | Athletic Club B | - | CD Izarra | 3:3 | ||||
| 16. Ronde | 06.12.2019 | SD Leioa | - | Athletic Club B | 1:0 | ||||
| 17. Ronde | 14.12.2019 | Athletic Club B | - | Barakaldo CF | 0:1 | ||||
| 18. Ronde | 21.12.2019 | Real Sociedad B | - | Athletic Club B | 0:2 | ||||
| 19. Ronde | 04.01.2020 | Athletic Club B | - | CD Alavés B | 1:0 | ||||
| 22. Ronde | 26.01.2020 | Athletic Club B | - | Cultural Leonesa | 1:0 | ||||
| 23. Ronde | 01.02.2020 | Salamanca CF UDS | - | Athletic Club B | 1:1 | ||||
| 24. Ronde | 08.02.2020 | Athletic Club B | - | CD Tudelano | 1:0 | ||||
| 28. Ronde | 07.03.2020 | Athletic Club B | - | Real Unión | 3:3 |
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