| 4. Round | 25/09/1998 | Atlético Madrid | - | Real Sociedad | 4:1 | ||||
| 9. Round | 07/11/1998 | Real Sociedad | - | Athletic Club | 3:1 | ||||
| 10. Round | 14/11/1998 | Real Betis | - | Real Sociedad | 1:0 | ||||
| 17. Round | 09/01/1999 | Real Sociedad | - | UD Salamanca | 4:0 | ||||
| 19. Round | 23/01/1999 | Real Sociedad | - | CD Alavés | 2:1 | ||||
| 20. Round | 29/01/1999 | Real Oviedo | - | Real Sociedad | 2:1 | ||||
| 21. Round | 06/02/1999 | Real Sociedad | - | CD Tenerife | 1:1 | ||||
| 22. Round | 12/02/1999 | RCD Mallorca | - | Real Sociedad | 1:0 | ||||
| 24. Round | 27/02/1999 | Deportivo La Coruña | - | Real Sociedad | 0:1 | ||||
| 26. Round | 13/03/1999 | Real Valladolid | - | Real Sociedad | 0:0 | ||||
| 27. Round | 20/03/1999 | Real Sociedad | - | FC Barcelona | 0:2 | ||||
| 28. Round | 03/04/1999 | Athletic Club | - | Real Sociedad | 0:0 |
Croatia