Originally, the knockout stage was scheduled to be played from 4 to 12 July 2020.[2][3] However, on 17 March 2020 the tournament was postponed until 2021 due to the COVID-19 pandemic in South America.[4]
In the knockout stage, if a match was tied after 90 minutes:[6]
In the quarter-finals, semi-finals and third place play-off, extra time would not be played, and the match would be decided by a penalty shoot-out (Regulations Article 9.3).
In the final, extra time would be played. If still tied after extra time, the match would be decided by a penalty shoot-out (Regulations Article 9.4).
Qualified teams
The top four placed teams from each group qualified for the knockout stage.
^ ab"Designación de Árbitros"(PDF). CONMEBOL.com (in Spanish). CONMEBOL. 4 July 2021. Archived from the original(PDF) on 6 July 2021. Retrieved 4 July 2021.
^"Designación de Árbitros"(PDF). CONMEBOL.com (in Spanish). CONMEBOL. 7 July 2021. Archived from the original(PDF) on 8 July 2021. Retrieved 7 July 2021.
^"Designación de Árbitros" [Referee Assignments] (PDF). CONMEBOL.com (in Spanish). CONMEBOL. 7 July 2021. Archived from the original(PDF) on 8 July 2021. Retrieved 7 July 2021.