| 1. Round | 18/02/1998 | San Lorenzo | - | Gimnasia de La Plata | 0:1 | ||||
| 5. Round | 07/03/1998 | San Lorenzo | - | Boca Juniors | 2:1 | ||||
| 6. Round | 12/03/1998 | Platense | - | San Lorenzo | 1:4 | ||||
| 7. Round | 21/03/1998 | San Lorenzo | - | Newell's Old Boys | 2:2 |  |
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| 8. Round | 28/03/1998 | Vélez Sarsfield | - | San Lorenzo | 1:2 | ||||
| 9. Round | 04/04/1998 | San Lorenzo | - | Argentinos Juniors | 2:2 |  |
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| 11. Round | 14/04/1998 | Independiente | - | San Lorenzo | 3:1 | ||||
| 12. Round | 18/04/1998 | San Lorenzo | - | Gimnasia de Jujuy | 3:1 | ||||
| 13. Round | 25/04/1998 | Colón de Santa Fe | - | San Lorenzo | 2:0 | ||||
| 14. Round | 02/05/1998 | San Lorenzo | - | River Plate | 0:0 | |
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| 16. Round | 07/05/1998 | San Lorenzo | - | Rosario Central | 2:1 | ||||
| 17. Round | 27/05/1998 | Ferro Carril Oeste | - | San Lorenzo | 2:3 |
Brazil