| 1. Round | 05/08/2003 | Deportivo Pasto | - | Atlético Nacional | 0:0 | ||||
| 1. Round | 20/08/2003 | Atlético Nacional | - | Deportivo Pasto | 2:1 | ||||
| Round of 16 | 01/10/2003 | Atlético Nacional | - | LDU Quito | 1:0 |  |
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| Quarter-finals | 21/10/2003 | Boca Juniors | - | Atlético Nacional | 0:1 | ||||
| Quarter-finals | 04/11/2003 | Atlético Nacional | - | Boca Juniors | 4:1 | |
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| Semi-finals | 12/11/2003 | Atlético Nacional | - | Cienciano | 1:2 | ||||
| Semi-finals | 03/12/2003 | Cienciano | - | Atlético Nacional | 1:0 |
Colombia