Copa Sudamericana 2011 – Knockout Stage

19 October 2011
Sao Paolo – Libertad
Referee: Jorge Larrionda (URU, photo)
Assistant Referee 1: Mauricio Espinosa (URU)
Assistant Referee 2: Carlos Pastorino (URU)
Fourth Official: Ricardo Marques (BRA)

Flamengo – Universidad de Chile
Referee: Saul Laverni (ARG)
Assistant Referee 1: Ariel Bustos (ARG)
Assistant Referee 2: Juan Belatti (ARG)
Fourth Official: Marcelo Henrique (BRA)

Arsenal – Olimpia
Referee: Dario Ubriaco (URU)
Assistant Referee 1: Miguel Nievas (URU)
Assistant Referee 2: Marcelo Costa (URU)
Fourth Official: Juan Pompei (ARG)

20 October 2011
Velez Sarsfield – Universidad Catolica

Referee: Antonio Arias (PAR)
Assistant Referee 1: Milciades Saldivar (PAR)
Assistant Referee 2: Cesar Franco (PAR)
Fourth Official: Gabriel Favale (ARG)

Universitario – Godoy Cruz

Referee: Wilmar Roldan (COL)
Assistant Referee 1: Javier Camargo (COL)
Assistant Referee 2: Rafel Rivas (COL)
Fourth Official: Henry Gambetta (PER)