| 19. Round | 03/01/1998 | Real Sociedad | - | RCD Mallorca | 1:0 | ||||
| 20. Round | 10/01/1998 | Real Sociedad | - | FC Barcelona | 2:2 | ||||
| 21. Round | 17/01/1998 | Racing Santander | - | Real Sociedad | 3:1 | ||||
| 22. Round | 24/01/1998 | Real Sociedad | - | Real Madrid | 4:2 | ||||
| 23. Round | 31/01/1998 | Real Valladolid | - | Real Sociedad | 0:4 | ||||
| 24. Round | 06/02/1998 | Real Sociedad | - | Athletic Club | 1:1 | ||||
| 25. Round | 14/02/1998 | RC Celta | - | Real Sociedad | 2:1 | ||||
| 26. Round | 21/02/1998 | Real Sociedad | - | Real Oviedo | 2:2 | ||||
| 27. Round | 28/02/1998 | CP Mérida | - | Real Sociedad | 3:1 | ||||
| 28. Round | 07/03/1998 | Real Sociedad | - | Real Zaragoza | 0:1 | ||||
| 31. Round | 27/03/1998 | Atlético Madrid | - | Real Sociedad | 2:2 |  |
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| 33. Round | 11/04/1998 | SD Compostela | - | Real Sociedad | 1:3 |  |
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| 34. Round | 17/04/1998 | Valencia CF | - | Real Sociedad | 3:2 | ||||
| 35. Round | 26/04/1998 | Real Sociedad | - | Deportivo La Coruña | 1:1 | |
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| 36. Round | 02/05/1998 | Sporting Gijón | - | Real Sociedad | 0:2 | |
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| 37. Round | 09/05/1998 | Real Sociedad | - | CD Tenerife | 1:1 | ||||
| 38. Round | 14/05/1998 | RCD Mallorca | - | Real Sociedad | 0:1 |
Croatia