[4] The final stages had been originally scheduled to be played from 21 July to 21 November 2020, but were postponed due to the COVID-19 pandemic.
Tied 0–0 on aggregate, Nacional won on penalties and advanced to the quarter-finals (Match S2).
Tied 1–1 on aggregate, Boca Juniors won on penalties and advanced to the quarter-finals (Match S4).
Tied 2–2 on aggregate, Racing won on penalties and advanced to the quarter-finals (Match S4).
The final was played on 30 January 2021 at the Estádio do Maracanã in Rio de Janeiro.