| 2. Round | 22/02/2003 | Nueva Chicago | - | San Lorenzo | 2:2 | ||||
| 4. Round | 08/03/2003 | Banfield | - | San Lorenzo | 1:1 | ||||
| 5. Round | 15/03/2003 | San Lorenzo | - | Boca Juniors | 1:2 | ||||
| 6. Round | 22/03/2003 | Estudiantes | - | San Lorenzo | 4:1 | ||||
| 8. Round | 05/04/2003 | San Lorenzo | - | Gimnasia de La Plata | 1:1 | ||||
| 9. Round | 12/04/2003 | Olimpo de Bahía Blanca | - | San Lorenzo | 0:1 | ||||
| 11. Round | 03/05/2003 | Newell's Old Boys | - | San Lorenzo | 2:1 | ||||
| 12. Round | 10/05/2003 | San Lorenzo | - | Vélez Sarsfield | 0:2 | ||||
| 13. Round | 23/05/2003 | Colón de Santa Fe | - | San Lorenzo | 0:1 | ||||
| 15. Round | 07/06/2003 | River Plate | - | San Lorenzo | 4:0 | ||||
| 16. Round | 14/06/2003 | San Lorenzo | - | Huracán | 4:0 | ||||
| 17. Round | 21/06/2003 | Arsenal de Sarandí | - | San Lorenzo | 1:2 | ||||
| 18. Round | 28/06/2003 | San Lorenzo | - | Talleres de Córdoba | 2:2 | ||||
| 19. Round | 05/07/2003 | Independiente | - | San Lorenzo | 0:1 |
Argentina