| 5. Round | 19/08/2018 | Boyacá Chicó | - | Atlético Junior | 2:1 |  |
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| 6. Round | 26/08/2018 | Atlético Junior | - | Independiente Medellín | 2:1 | ||||
| 7. Round | 03/09/2018 | Deportivo Cali | - | Atlético Junior | 1:0 | ||||
| 8. Round | 07/09/2018 | Atlético Junior | - | Águilas Doradas | 2:0 | ||||
| 9. Round | 10/09/2018 | Millonarios | - | Atlético Junior | 1:1 | ||||
| 11. Round | 22/09/2018 | Atlético Junior | - | La Equidad | 3:1 | |
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| 13. Round | 10/10/2018 | Atlético Junior | - | Deportes Tolima | 4:3 | ||||
| 14. Round | 14/10/2018 | Santa Fe | - | Atlético Junior | 2:2 | ||||
| 15. Round | 18/10/2018 | Atlético Junior | - | Patriotas FC | 4:0 | ||||
| 16. Round | 21/10/2018 | Atlético Nacional | - | Atlético Junior | 1:0 | ||||
| 17. Round | 28/10/2018 | Atlético Junior | - | América de Cali | 0:0 | ||||
| 18. Round | 06/11/2018 | Alianza Petrolera | - | Atlético Junior | 0:3 | |
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| 19. Round | 12/11/2018 | Atlético Junior | - | Jaguares de Córdoba | 1:2 |
Colombia