| 1. Round | 15/02/2003 | San Lorenzo | - | Rosario Central | 2:2 |  |
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| 2. Round | 22/02/2003 | Nueva Chicago | - | San Lorenzo | 2:2 | |
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| 3. Round | 01/03/2003 | San Lorenzo | - | Unión de Santa Fe | 0:2 | ||||
| 4. Round | 08/03/2003 | Banfield | - | San Lorenzo | 1:1 | ||||
| 5. Round | 15/03/2003 | San Lorenzo | - | Boca Juniors | 1:2 | |
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| 6. Round | 22/03/2003 | Estudiantes | - | San Lorenzo | 4:1 |  |
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| 8. Round | 05/04/2003 | San Lorenzo | - | Gimnasia de La Plata | 1:1 | |
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| 10. Round | 19/04/2003 | San Lorenzo | - | Racing Club | 3:1 | |
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| 11. Round | 03/05/2003 | Newell's Old Boys | - | San Lorenzo | 2:1 | |
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| 12. Round | 10/05/2003 | San Lorenzo | - | Vélez Sarsfield | 0:2 | ||||
| 13. Round | 23/05/2003 | Colón de Santa Fe | - | San Lorenzo | 0:1 | ||||
| 14. Round | 31/05/2003 | San Lorenzo | - | Chacarita Juniors | 1:0 | ||||
| 15. Round | 07/06/2003 | River Plate | - | San Lorenzo | 4:0 | ||||
| 16. Round | 14/06/2003 | San Lorenzo | - | Huracán | 4:0 | |
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| 18. Round | 28/06/2003 | San Lorenzo | - | Talleres de Córdoba | 2:2 |
Argentina