| 1. Round | 15/08/2004 | San Lorenzo | - | Olimpo de Bahía Blanca | 1:1 | ||||
| 2. Round | 22/08/2004 | Boca Juniors | - | San Lorenzo | 3:0 |  |
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| 3. Round | 25/08/2004 | San Lorenzo | - | Gimnasia de La Plata | 3:0 | ||||
| 4. Round | 29/08/2004 | Independiente | - | San Lorenzo | 2:2 | ||||
| 5. Round | 12/09/2004 | San Lorenzo | - | Vélez Sarsfield | 1:0 | ||||
| 6. Round | 19/09/2004 | Rosario Central | - | San Lorenzo | 1:0 | ||||
| 7. Round | 23/09/2004 | San Lorenzo | - | Huracán de Tres Arroyos | 4:1 | ||||
| 9. Round | 02/10/2004 | San Lorenzo | - | Banfield | 3:1 | ||||
| 10. Round | 16/10/2004 | Argentinos Juniors | - | San Lorenzo | 1:0 |  |
Argentina