| 8. Journée | 27.06.2021 | Boston River | - | Liverpool | 1:1 | ||||
| 9. Journée | 03.07.2021 | River Plate | - | Boston River | 1:1 | ||||
| 10. Journée | 11.07.2021 | Boston River | - | Cerro Largo | 1:0 |  |
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| 11. Journée | 16.07.2021 | Progreso | - | Boston River | 1:0 | ||||
| 12. Journée | 31.07.2021 | Boston River | - | Sud América | 2:0 | |
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| 13. Journée | 09.08.2021 | Plaza Colonia | - | Boston River | 0:0 | ||||
| 14. Journée | 16.08.2021 | Boston River | - | Fénix | 0:2 | |
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| 15. Journée | 21.08.2021 | Deportivo Maldonado | - | Boston River | 0:2 |
Uruguay