| 1. Jornada | 06.03.2021 | UAI Urquiza | - | Atlético San Miguel | 1:0 | ||||
| 2. Jornada | 12.03.2021 | Atlético San Miguel | - | Talleres (RdE) | 1:1 | ||||
| 4. Jornada | 27.03.2021 | Deportivo Merlo | - | Atlético San Miguel | 1:0 | ||||
| 5. Jornada | 04.04.2021 | Atlético San Miguel | - | Flandria | 1:1 |  |
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| 6. Jornada | 10.04.2021 | Cañuelas | - | Atlético San Miguel | 3:0 | ||||
| 7. Jornada | 17.04.2021 | Atlético San Miguel | - | Acassuso | 2:0 | ||||
| 8. Jornada | 25.04.2021 | Sacachispas | - | Atlético San Miguel | 1:0 | |
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| 9. Jornada | 02.05.2021 | Atlético San Miguel | - | Justo José de Urquiza | 0:1 | ||||
| 10. Jornada | 08.05.2021 | Argentino de Quilmes | - | Atlético San Miguel | 2:1 |  |
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| 11. Jornada | 15.05.2021 | Atlético San Miguel | - | CA Los Andes | 1:0 | |
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| 13. Jornada | 15.06.2021 | Atlético San Miguel | - | Fénix | 3:2 |
Argentina