| 4. Round | 05/03/2021 | Godoy Cruz II | - | Platense II | 2:1 | ||||
| 5. Round | 12/03/2021 | Platense II | - | Racing Club II | 3:0 | ||||
| 6. Round | 19/03/2021 | Arsenal de Sarandí II | - | Platense II | 2:2 | ||||
| 1. Round | 22/03/2021 | Platense II | - | Sarmiento de Junín II | 1:2 | ||||
| 7. Round | 29/03/2021 | Platense II | - | Colón de Santa Fe II | 2:2 |  |
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| 8. Round | 02/04/2021 | Central Córdoba SdE II | - | Platense II | 1:1 |  |
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| 9. Round | 09/04/2021 | Platense II | - | San Lorenzo II | 2:0 | ||||
| 10. Round | 16/04/2021 | Banfield II | - | Platense II | 2:2 | ||||
| 13. Round | 07/05/2021 | Platense II | - | Rosario Central II | 1:0 | |
Argentina