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| 1st(1st leg) | Avaí - SC | - | Grêmio Porto Alegre | 1:2 (0:2) | ||
| 2nd (2nd leg) | Grêmio Porto Alegre | - | Avaí - SC | 2:1 (1:0) | ||
| 1st(1st leg): 03/10/2021 19:00 | 2nd (2nd leg): 10/10/2021 19:00 | Winner: Grêmio Porto Alegre | ||||
| 1st(1st leg) | Ceará - CE | - | Fortaleza - CE | 1:0 (0:0) | ||
| 2nd (2nd leg) | Fortaleza - CE | - | Ceará - CE | 0:0 (0:0) | ||
| 1st(1st leg): 03/10/2021 19:00 | 2nd (2nd leg): 10/10/2021 19:00 | Winner: Ceará - CE | ||||
