| Group 1 | 26/02/1991 | Boca Juniors | - | River Plate | 4:3 |  |
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| Group 1 | 11/03/1991 | Bolívar | - | Boca Juniors | 2:0 | ||||
| Group 1 | 19/03/1991 | River Plate | - | Boca Juniors | 0:2 | ||||
| Group 1 | 04/04/1991 | Boca Juniors | - | Oriente Petrolero | 0:0 | ||||
| Round of 16 | 16/04/1991 | Boca Juniors | - | Corinthians SP | 3:1 | ||||
| Round of 16 | 23/04/1991 | Corinthians SP | - | Boca Juniors | 1:1 | ||||
| Quarter-finals | 30/04/1991 | Flamengo RJ | - | Boca Juniors | 2:1 | ||||
| Quarter-finals | 07/05/1991 | Boca Juniors | - | Flamengo RJ | 3:0 |  |
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| Semi-finals | 21/05/1991 | Colo-Colo | - | Boca Juniors | 3:1 | |
Argentina