| 1. Round | 06/08/1998 | San Lorenzo | - | Platense | 2:2 | ||||
| 6. Round | 10/09/1998 | Argentinos Juniors | - | San Lorenzo | 1:5 | ||||
| 7. Round | 19/09/1998 | Talleres de Córdoba | - | San Lorenzo | 2:2 | ||||
| 12. Round | 22/10/1998 | San Lorenzo | - | Ferro Carril Oeste | 2:1 | ||||
| 13. Round | 31/10/1998 | Gimnasia de Jujuy | - | San Lorenzo | 3:2 | ||||
| 14. Round | 07/11/1998 | San Lorenzo | - | Boca Juniors | 1:3 |  |
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| 17. Round | 27/11/1998 | Belgrano de Córdoba | - | San Lorenzo | 2:2 | ||||
| 18. Round | 05/12/1998 | San Lorenzo | - | Newell's Old Boys | 2:2 |
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