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| 1st(1st leg) | San Lorenzo | - | Lanús | 2:0 (1:0) | ||
| 2nd (2nd leg) | Lanús | - | San Lorenzo | 4:3 (2:0, 2:0) pso | ||
| 1st(1st leg): 13/09/2017 23:15 | 2nd (2nd leg): 22/09/2017 01:45 | Winner: Lanús | ||||
| 1st(1st leg) | Barcelona | - | Santos FC | 1:1 (0:0) | ||
| 2nd (2nd leg) | Santos FC | - | Barcelona | 0:1 (0:0) | ||
| 1st(1st leg): 14/09/2017 01:45 | 2nd (2nd leg): 21/09/2017 01:45 | Winner: Barcelona | ||||
| 1st(1st leg) | Botafogo - RJ | - | Grêmio Porto Alegre | 0:0 (0:0) | ||
| 2nd (2nd leg) | Grêmio Porto Alegre | - | Botafogo - RJ | 1:0 (0:0) | ||
| 1st(1st leg): 14/09/2017 01:45 | 2nd (2nd leg): 21/09/2017 01:45 | Winner: Grêmio Porto Alegre | ||||
| 1st(1st leg) | Jorge Wilstermann | - | River Plate | 3:0 (1:0) | ||
| 2nd (2nd leg) | River Plate | - | Jorge Wilstermann | 8:0 (4:0) | ||
| 1st(1st leg): 15/09/2017 01:45 | 2nd (2nd leg): 21/09/2017 23:15 | Winner: River Plate | ||||
