Argentinos Juniors 1-2 Boca Juniors *
| 21.07.1991 | Boca Juniors | 2-0 | Argentinos Juniors | |
| 13.07.1991 | Argentinos Juniors | 1-0 | Boca Juniors | |
Deportivo Mandiyú 0-4 River Plate *
| 21.07.1991 | River Plate | 2-0 | Deportivo Mandiyú | |
| 13.07.1991 | Deportivo Mandiyú | 0-2 | River Plate | |
*Racing Club 5-4 Vélez Sársfield
| 21.07.1991 | Vélez Sársfield | 1-5 | Racing Club | |
| 13.07.1991 | Racing Club | 0-3 | Vélez Sársfield | |
*San Lorenzo 3-2 Independiente
| 21.07.1991 | Independiente | 1-2 | San Lorenzo | |
| 13.07.1991 | San Lorenzo | 1-1 | Independiente | |