1. Round 20/08/1999 Athletic Bilbao - Real Betis 1:0
2. Round 28/08/1999 Real Valladolid - Athletic Bilbao 1:0
3. Round 11/09/1999 Athletic Bilbao - Real Madrid 2:2
5. Round 25/09/1999 RCD Mallorca - Athletic Bilbao 2:1
7. Round 11/10/1999 Málaga CF - Athletic Bilbao 3:4 GoalGoal
8. Round 15/10/1999 Athletic Bilbao - Valencia CF 1:0
9. Round 22/10/1999 FC Barcelona - Athletic Bilbao 4:0
10. Round 30/10/1999 Athletic Bilbao - Real Oviedo 1:1
11. Round 06/11/1999 Sevilla FC - Athletic Bilbao 0:0
12. Round 19/11/1999 Athletic Bilbao - Atlético Madrid 4:2
13. Round 27/11/1999 Rayo Vallecano - Athletic Bilbao 1:2 yellow card
14. Round 03/12/1999 Athletic Bilbao - Real Sociedad 1:1
15. Round 11/12/1999 RC Celta - Athletic Bilbao 1:1
16. Round 18/12/1999 Athletic Bilbao - Real Zaragoza 2:2 Goal yellow card
17. Round 21/12/1999 Racing Santander - Athletic Bilbao 2:2 yellow-red card
20. Round 15/01/2000 Real Betis - Athletic Bilbao 2:1
21. Round 22/01/2000 Athletic Bilbao - Real Valladolid 1:0
22. Round 29/01/2000 Real Madrid - Athletic Bilbao 3:1
23. Round 05/02/2000 Athletic Bilbao - CD Numancia 2:1
24. Round 11/02/2000 Athletic Bilbao - RCD Mallorca 1:1
25. Round 18/02/2000 Deportivo La Coruña - Athletic Bilbao 2:0
26. Round 26/02/2000 Athletic Bilbao - Málaga CF 2:2 yellow card
27. Round 03/03/2000 Valencia CF - Athletic Bilbao 2:0 yellow card
28. Round 10/03/2000 Athletic Bilbao - FC Barcelona 0:4
29. Round 18/03/2000 Real Oviedo - Athletic Bilbao 1:0
31. Round 01/04/2000 Atlético Madrid - Athletic Bilbao 1:2
32. Round 08/04/2000 Athletic Bilbao - Rayo Vallecano 1:2
33. Round 15/04/2000 Real Sociedad - Athletic Bilbao 4:1 yellow card
35. Round 29/04/2000 Real Zaragoza - Athletic Bilbao 0:0
36. Round 06/05/2000 Athletic Bilbao - Racing Santander 2:2 Goal