3. Round | 12/09/2021 | CD Leonesa | - | Athletic Bilbao B | 2:1 | ||||
4. Round | 17/09/2021 | Athletic Bilbao B | - | Unionistas CF | 0:1 | ||||
6. Round | 03/10/2021 | CD Tudelano | - | Athletic Bilbao B | 2:2 | ||||
7. Round | 08/10/2021 | Athletic Bilbao B | - | RC Celta B | 0:1 | ||||
8. Round | 17/10/2021 | Real Valladolid B | - | Athletic Bilbao B | 3:1 | ||||
10. Round | 31/10/2021 | SD Logroñés | - | Athletic Bilbao B | 1:1 | ||||
11. Round | 07/11/2021 | Athletic Bilbao B | - | Rayo Majadahonda | 1:1 | ||||
12. Round | 12/11/2021 | Racing Santander | - | Athletic Bilbao B | 2:0 | ||||
13. Round | 21/11/2021 | Athletic Bilbao B | - | CF Talavera | 0:1 | ||||
38. Round | 27/05/2022 | UD SS Reyes | - | Athletic Bilbao B | 2:0 |