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| H | Athletico Paranaense | - | Santos FC | 1:0 (1:0) | ||
| R | Santos FC | - | Athletico Paranaense | 0:1 (0:0) | ||
| H: 26.08.2021 00:00 | R: 15.09.2021 02:30 | Sieger: Athletico Paranaense | ||||
| H | São Paulo FC | - | Fortaleza | 2:2 (0:0) | ||
| R | Fortaleza | - | São Paulo FC | 3:1 (1:0) | ||
| H: 26.08.2021 02:30 | R: 16.09.2021 02:30 | Sieger: Fortaleza | ||||
| H | Grêmio Porto Alegre | - | Flamengo RJ | 0:4 (0:0) | ||
| R | Flamengo RJ | - | Grêmio Porto Alegre | 2:0 (0:0) | ||
| H: 26.08.2021 02:30 | R: 16.09.2021 02:30 | Sieger: Flamengo RJ | ||||
| H | Fluminense RJ | - | Atlético Mineiro | 1:2 (1:2) | ||
| R | Atlético Mineiro | - | Fluminense RJ | 1:0 (0:0) | ||
| H: 27.08.2021 02:30 | R: 16.09.2021 00:00 | Sieger: Atlético Mineiro | ||||
