| 6. Round | 04/10/2003 | Real Betis | - | Athletic Club | 1:1 |  |
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| 7. Round | 19/10/2003 | Athletic Club | - | Villarreal CF | 2:0 | ||||
| 8. Round | 26/10/2003 | Real Valladolid | - | Athletic Club | 2:0 | ||||
| 9. Round | 29/10/2003 | Athletic Club | - | Málaga CF | 2:1 | ||||
| 10. Round | 01/11/2003 | Real Madrid | - | Athletic Club | 3:0 | ||||
| 16. Round | 14/12/2003 | Athletic Club | - | Sevilla FC | 2:1 | ||||
| 17. Round | 21/12/2003 | Albacete | - | Athletic Club | 1:1 | ||||
| 19. Round | 11/01/2004 | Atlético Madrid | - | Athletic Club | 3:0 | |
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| 35. Round | 02/05/2004 | Sevilla FC | - | Athletic Club | 2:0 | ||||
| 37. Round | 16/05/2004 | CA Osasuna | - | Athletic Club | 1:2 |
Spain