6. Round | 29/09/2018 | Real Oviedo B | - | Athletic Bilbao B | 2:1 | ||||
8. Round | 13/10/2018 | Real Sociedad B | - | Athletic Bilbao B | 1:0 | ||||
11. Round | 03/11/2018 | Athletic Bilbao B | - | CD Izarra | 6:0 | ||||
13. Round | 18/11/2018 | Athletic Bilbao B | - | SCD Durango | 2:2 | ||||
14. Round | 25/11/2018 | Barakaldo CF | - | Athletic Bilbao B | 1:1 | ||||
15. Round | 01/12/2018 | Athletic Bilbao B | - | UP Langreo | 5:1 | ||||
18. Round | 22/12/2018 | Real Unión | - | Athletic Bilbao B | 1:0 | ||||
19. Round | 05/01/2019 | Athletic Bilbao B | - | CD Vitoria | 2:0 | ||||
20. Round | 13/01/2019 | CD Tudelano | - | Athletic Bilbao B | 3:2 | ||||
21. Round | 19/01/2019 | Athletic Bilbao B | - | Gimnástica Torrelavega | 1:0 | ||||
25. Round | 16/02/2019 | Athletic Bilbao B | - | Real Oviedo B | 4:1 | ||||
30. Round | 24/03/2019 | CD Izarra | - | Athletic Bilbao B | 0:0 | ||||
32. Round | 06/04/2019 | SCD Durango | - | Athletic Bilbao B | 3:2 | ||||
34. Round | 18/04/2019 | UP Langreo | - | Athletic Bilbao B | 0:2 | ||||
36. Round | 05/05/2019 | CD Calahorra | - | Athletic Bilbao B | 0:3 |