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| 1st(1st leg) | Banfield | - | Estudiantes | 2:0 (2:0) | ||
| 2nd (2nd leg) | Estudiantes | - | Banfield | 2:1 (2:0) | ||
| 1st(1st leg): 10/08/2005 | 2nd (2nd leg): 25/08/2005 | Winner: Banfield | ||||
| 1st(1st leg) | Universidad Católica | - | Alianza Atlético | 5:0 (2:0) | ||
| 2nd (2nd leg) | Alianza Atlético | - | Universidad Católica | 2:0 (1:0) | ||
| 1st(1st leg): 11/08/2005 | 2nd (2nd leg): 25/08/2005 | Winner: Universidad Católica | ||||
| 1st(1st leg) | Fluminense RJ | - | Santos FC | 2:1 (1:0) | ||
| 2nd (2nd leg) | Santos FC | - | Fluminense RJ | 2:4 (0:1, 2:1, 2:1) pso | ||
| 1st(1st leg): 17/08/2005 | 2nd (2nd leg): 31/08/2005 | Winner: Fluminense RJ | ||||
| 1st(1st leg) | Internacional | - | São Paulo FC | 2:1 (1:1) | ||
| 2nd (2nd leg) | São Paulo FC | - | Internacional | 1:1 (1:0) | ||
| 1st(1st leg): 17/08/2005 | 2nd (2nd leg): 01/09/2005 | Winner: Internacional | ||||
| 1st(1st leg) | Juventude - RS | - | Cruzeiro | 1:3 (1:3) | ||
| 2nd (2nd leg) | Cruzeiro | - | Juventude - RS | 0:1 (0:1) | ||
| 1st(1st leg): 17/08/2005 | 2nd (2nd leg): 01/09/2005 | Winner: Cruzeiro | ||||
| 1st(1st leg) | Goiás - GO | - | Corinthians SP | 0:2 (0:2) | ||
| 2nd (2nd leg) | Corinthians SP | - | Goiás - GO | 1:1 (1:0) | ||
| 1st(1st leg): 17/08/2005 | 2nd (2nd leg): 31/08/2005 | Winner: Corinthians SP | ||||
| 1st(1st leg) | Newell's Old Boys | - | Rosario Central | 0:0 (0:0) | ||
| 2nd (2nd leg) | Rosario Central | - | Newell's Old Boys | 1:0 (1:0) | ||
| 1st(1st leg): 18/08/2005 | 2nd (2nd leg): 29/08/2005 | Winner: Rosario Central | ||||
| 1st(1st leg) | The Strongest | - | LDU Quito | 2:1 (0:1) | ||
| 2nd (2nd leg) | LDU Quito | - | The Strongest | 0:3 (0:1) | ||
| 1st(1st leg): 30/08/2005 | 2nd (2nd leg): 08/09/2005 | Winner: The Strongest | ||||
| 1st(1st leg) | Cerro Porteño | - | Defensor Sporting | 2:0 (1:0) | ||
| 2nd (2nd leg) | Defensor Sporting | - | Cerro Porteño | 1:1 (0:1) | ||
| 1st(1st leg): 30/08/2005 | 2nd (2nd leg): 06/09/2005 | Winner: Cerro Porteño | ||||
| 1st(1st leg) | Trujillanos FC | - | Atlético Nacional | 1:5 (0:3) | ||
| 2nd (2nd leg) | Atlético Nacional | - | Trujillanos FC | 2:0 (1:0) | ||
| 1st(1st leg): 30/08/2005 | 2nd (2nd leg): 08/09/2005 | Winner: Atlético Nacional | ||||
