| 28. Round | 10/03/2019 | CD Mirandés | - | Athletic Club B | 1:1 | ||||
| 29. Round | 17/03/2019 | Athletic Club B | - | Arenas de Getxo | 2:1 | ||||
| 31. Round | 30/03/2019 | Athletic Club B | - | Racing Santander | 1:1 | ||||
| 33. Round | 13/04/2019 | Athletic Club B | - | Barakaldo CF | 4:1 |  |
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| 34. Round | 18/04/2019 | UP Langreo | - | Athletic Club B | 0:2 |  |
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| 35. Round | 28/04/2019 | Athletic Club B | - | Sporting Gijón B | 0:2 |
Spain