Copa Sudamericana – Group Stage (Matchday 4)

20 August 2013
Universidad Catolica – Emelec
Referee: Patricio Loustau (ARG, photo)
Assistant Referee 1: Ezequiel Barilovsky (ARG)
Assistant Referee 2: Ariel Scime (ARG)
Fourth Official: Carlos Ulloa (CHI)
Referee Observer: Guido Aros (CHI)

Sport Recife – Nautico
Referee: Sandro Ricci (BRA)
Assistant Referee 1: Alessandro Roccha (BRA)
Assistant Referee 2: Emerson Carvalho (BRA)
Fourth Official: Pericles Cortes (BRA)
Referee Observer: Antonio Pereira (BRA)

Guarani – Atletico Nacional
Referee: Julio Bascunan (CHI)
Assistant Referee 1: Juan Maturana (CHI)
Assistant Referee 2: Marcelo Barraza (CHI)
Fourth Official: Ulises Mereles (PAR)
Referee Observer: Carlos Alarcon (PAR)

La Equidad – Cobreloa
Referee: Jose Argote (VEN)
Assistant Referee 1: Luis Murillo (VEN)
Assistant Referee 2: Tulio Moreno (VEN)
Fourth Official: Wilson Lamoureux (COL)
Referee Observer: Oscar Ruiz (COL)

21 August 2013
Itagui – River Plate
Referee: Omar Ponce (ECU)
Assistant Referee 1: Luis Alvarado (ECU)
Assistant Referee 2: Carlos Herrera (ECU)
Fourth Official: Luis Sanchez (COL)
Referee Observer: Otalvaro Polanco (COL)

Criciuma – Ponte Preta
Referee: Leandro Vuaden (BRA)
Assistant Referee 1: Altemir Hausmann (BRA)
Assistant Referee 2: Rodrigo Joia (BRA)
Fourth Official: Heber Lopes (BRA)
Referee Observer: Jose Mocelin (BRA)

Libertad – Mineros de Guyana
Referee: Daniel Fedorczuk (URU)
Assistant Referee 1: Carlos Pastorino (URU)
Assistant Referee 2: Nicolas Taran (URU)
Fourth Official: Mario Diaz De Vivar (PAR)
Referee Observer: Miguel Giacomuzzi (PAR)

Vitoria – Coritiba
Referee: Ricardo Marques (BRA)
Assistant Referee 1: Fabricio Vilarinho (BRA)
Assistant Referee 2: Fabio Pereira (BRA)
Fourth Official: Marcelo Henrique (BRA)
Referee Observer: Manoel Serapiao (BRA)

Universidad Chile – Independiente Valle
Referee: Julio Quintana (PAR)
Assistant Referee 1: Hugo Martinez (PAR)
Assistant Referee 2: Eduardo Cardozo (PAR)
Fourth Official: Roberto Tobar (CHI)
Referee Observer: Pablo Pozo (CHI)

22 August 2013
Liga de Loja – Nacional
Referee: Adrian Velez (COL)
Assistant Referee 1: Rafael Rivas (COL)
Assistant Referee 2: Wilson Berrio (COL) F
ourth Official: Jose Espinel (ECU)
Referee Observer: Bomer Fierro (ECU)

San Lorenzo – River Plate
Referee: Mauro Vigliano (ARG)
Assistant Referee 1: Gustavo Rossi (ARG)
Assistant Referee 2: Ivan Nunez (ARG)
Fourth Official: Diego Ceballos (ARG)
Referee Observer: Hugo Padilla (ARG)

Portuguesa – Bahia
Referee: Wilton Sampaio (BRA)
Assistant Referee 1: Marcio Santiago (BRA)
Assistant Referee 2: Kleber Gil (BRA)
Fourth Official: Paulo Oliveira (BRA)
Referee Observer: Ednilson Corona (BRA)

Deportivo Pasto – Colo Colo
Referee: Oscar Maldonado (BOL)
Assistant Referee 1: Efrain Castro (BOL)
Assistant Referee 2: Javier Bustillos (BOL)
Fourth Official: Imer Machado (COL)
Referee Observer: Otalvaro Polanco (COL)