1. Round | 25/08/2018 | Athletic Bilbao B | - | CD Tudelano | 2:0 | ||||
2. Round | 01/09/2018 | Gimnástica Torrelavega | - | Athletic Bilbao B | 0:0 | ||||
3. Round | 08/09/2018 | Athletic Bilbao B | - | SD Amorebieta | 3:1 | ||||
4. Round | 15/09/2018 | SD Leioa | - | Athletic Bilbao B | 1:4 | ||||
5. Round | 22/09/2018 | Athletic Bilbao B | - | SD Gernika | 3:0 | ||||
36. Round | 05/05/2019 | CD Calahorra | - | Athletic Bilbao B | 0:3 | ||||
38. Round | 19/05/2019 | CD Vitoria | - | Athletic Bilbao B | 0:0 |