| 1. Round | 08/08/1998 | Rosario Central | - | Newell's Old Boys | 1:1 |  |
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| 2. Round | 14/08/1998 | Newell's Old Boys | - | Independiente | 2:1 | ||||
| 3. Round | 23/08/1998 | Lanús | - | Newell's Old Boys | 0:1 | ||||
| 4. Round | 28/08/1998 | Newell's Old Boys | - | Unión de Santa Fe | 0:0 | ||||
| 6. Round | 12/09/1998 | Newell's Old Boys | - | Gimnasia de Jujuy | 0:0 | ||||
| 7. Round | 19/09/1998 | Boca Juniors | - | Newell's Old Boys | 2:1 | ||||
| 8. Round | 27/09/1998 | Newell's Old Boys | - | Gimnasia de La Plata | 0:0 | ||||
| 10. Round | 10/10/1998 | Newell's Old Boys | - | Belgrano de Córdoba | 0:2 | ||||
| 11. Round | 17/10/1998 | Newell's Old Boys | - | Argentinos Juniors | 0:0 | ||||
| 12. Round | 24/10/1998 | Racing Club | - | Newell's Old Boys | 2:1 | ||||
| 13. Round | 31/10/1998 | Newell's Old Boys | - | Platense | 2:1 | ||||
| 14. Round | 07/11/1998 | Colón de Santa Fe | - | Newell's Old Boys | 2:1 | ||||
| 19. Round | 11/12/1998 | Newell's Old Boys | - | Talleres de Córdoba | 4:2 |
Argentina