| 2. Round | 01/07/2021 | Athletico Paranaense [U20] | - | Sport Recife - PE [U20] | 3:1 |  |
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| 3. Round | 04/07/2021 | Bahia - BA [U20] | - | Athletico Paranaense [U20] | 2:2 | ||||
| 4. Round | 11/07/2021 | Athletico Paranaense [U20] | - | América - MG [U20] | 3:1 | ||||
| 5. Round | 14/07/2021 | Botafogo - RJ [U20] | - | Athletico Paranaense [U20] | 1:0 | ||||
| 11. Round | 14/08/2021 | Athletico Paranaense [U20] | - | Fluminense RJ [U20] | 3:1 | |
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| 12. Round | 22/08/2021 | Ceará - CE [U20] | - | Athletico Paranaense [U20] | 1:2 | |
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| 15. Round | 12/09/2021 | Athletico Paranaense [U20] | - | Fortaleza - CE [U20] | 3:5 | ||||
| 16. Round | 19/09/2021 | Chapecoense [U20] | - | Athletico Paranaense [U20] | 4:2 | ||||
| 19. Round | 12/10/2021 | Athletico Paranaense [U20] | - | Flamengo RJ [U20] | 1:4 |
Brazil