1. Round | 18/10/2020 | Arenas de Getxo | - | Athletic Bilbao B | 1:1 | ||||
2. Round | 25/10/2020 | Athletic Bilbao B | - | Racing Santander | 0:1 | ||||
5. Round | 14/11/2020 | Athletic Bilbao B | - | CD Alavés B | 2:0 | ||||
6. Round | 22/11/2020 | SD Leioa | - | Athletic Bilbao B | 1:1 | ||||
9. Round | 03/01/2021 | Athletic Bilbao B | - | Barakaldo CF | 3:0 | ||||
13. Round | 24/01/2021 | Racing Santander | - | Athletic Bilbao B | 1:1 | ||||
20. Round | 14/03/2021 | Barakaldo CF | - | Athletic Bilbao B | 3:1 | ||||
17. Round | 17/03/2021 | Athletic Bilbao B | - | SD Leioa | 4:0 | ||||
21. Round | 21/03/2021 | Athletic Bilbao B | - | Real Sociedad B | 1:2 |