1. Round | 26/08/2018 | Racing Santander | - | Real Sociedad B | 1:0 | ||||
2. Round | 01/09/2018 | Real Sociedad B | - | SCD Durango | 3:0 | ||||
4. Round | 16/09/2018 | Real Sociedad B | - | UP Langreo | 1:1 | ||||
8. Round | 13/10/2018 | Real Sociedad B | - | Athletic Bilbao B | 1:0 | ||||
9. Round | 21/10/2018 | CD Tudelano | - | Real Sociedad B | 1:3 | ||||
10. Round | 27/10/2018 | Real Sociedad B | - | Gimnástica Torrelavega | 0:0 | ||||
16. Round | 09/12/2018 | Real Sociedad B | - | CD Vitoria | 4:2 |