| Group 3 | 19/02/1991 | Nacional | - | Bella Vista | 3:0 |  |
|||
| Group 3 | 28/02/1991 | Nacional | - | Flamengo RJ | 0:1 | ||||
| Group 3 | 14/03/1991 | Nacional | - | Corinthians SP | 1:1 | |
|||
| Group 3 | 19/03/1991 | Bella Vista | - | Nacional | 0:3 | ||||
| Group 3 | 01/04/1991 | Flamengo RJ | - | Nacional | 4:0 | ||||
| Group 3 | 04/04/1991 | Corinthians SP | - | Nacional | 0:0 | ||||
| Round of 16 | 16/04/1991 | Nacional | - | Bolívar | 4:1 | |
|||
| Round of 16 | 23/04/1991 | Bolívar | - | Nacional | 1:1 | |
|||
| Quarter-finals | 02/05/1991 | Colo-Colo | - | Nacional | 4:0 | ||||
| Quarter-finals | 07/05/1991 | Nacional | - | Colo-Colo | 2:0 |
Panama