| 4. Round | 13/09/2014 | Sestao River | - | Real Sociedad B | 3:2 | ||||
| 10. Round | 25/10/2014 | Real Sociedad B | - | CF Fuenlabrada | 3:0 | ||||
| 12. Round | 08/11/2014 | Real Sociedad B | - | Athletic Club B | 1:1 | ||||
| 16. Round | 07/12/2014 | Real Sociedad B | - | UD Socuéllamos | 1:2 | ||||
| 18. Round | 20/12/2014 | Real Sociedad B | - | Rayo Vallecano B | 0:1 | ||||
| 20. Round | 11/01/2015 | UB Conquense | - | Real Sociedad B | 3:3 | ||||
| 23. Round | 01/02/2015 | Real Sociedad B | - | Sestao River | 1:1 | ||||
| 25. Round | 15/02/2015 | CD Guadalajara | - | Real Sociedad B | 1:0 | ||||
| 27. Round | 01/03/2015 | Atlético Madrid B | - | Real Sociedad B | 3:0 | ||||
| 28. Round | 07/03/2015 | Real Sociedad B | - | Getafe CF B | 3:2 | ||||
| 38. Round | 17/05/2015 | Real Sociedad B | - | UD Las Palmas B | 0:3 |
Spain