28-30 August 2018Santos – Independiente
Referee: Julio Bascuñan (CHI, photo)
Assistant Referee 1: Carlos Astroza (CHI)
Assistant Referee 2: Claudio Rios (CHI)
Fourth Official: Eduardo Gamboa (CHI)
Referee Assessor: Ubaldo Aquino (PAR)
Atlético Nacional – Atletico Tucumán
Referee: Roberto Tobar (CHI)
Assistant Referee 1: Christian Schiemann (CHI)
Assistant Referee 2: Jose Retamal (CHI)
Fourth Official: Piero Maza (CHI)
Referee Assessor: Carlos Torres (PAR)
Gremio – Estudiantes
Referee: Eber Aquino (PAR)
Assistant Referee 1: Juan Zorrilla (PAR)
Assistant Referee 2: Dario Gaona (PAR)
Fourth Official: Arnaldo Samaniego (PAR)
Referee Assessor: Francisco Mondria (CHI)
River Plate – Racing
Referee: Mario Diaz de Vívar (PAR)
Assistant Referee 1: Eduardo Cardozo (PAR)
Assistant Referee 2: Milciades Saldivar (PAR)
Fourth Official: Julio Quintana (PAR)
Referee Assessor: Carlos Herrera (ECU)
Cruzeiro – Flamengo
Referee: Andres Cunha (URU)
Assistant Referee 1: Nicolas Taran (URU)
Assistant Referee 2: Mauricio Espinosa (URU)
Fourth Official: Leodan Gonzalez (URU)
Referee Assessor: Claudio Puga (CHI)
Corinthians – Colo Colo
Referee: Nestor Pitana (ARG)
Assistant Referee 1: Juan Belatti (ARG)
Assistant Referee 2: Gustavo Rossi (ARG)
Fourth Official: Fernando Espinoza (ARG)
Referee Assessor: Jose Buitrago (COL)
Libertad – Boca Juniors
Referee: Wilmar Roldan (COL)
Assistant Referee 1: Cristian de la Cruz (COL)
Assistant Referee 2: Wilmar Navarro (COL)
Fourth Official: Andres Rojas (COL)
Referee Assessor: Jorge Jaimes (PER)
Palmeiras – Cerro Porteño
Referee: German Delfino (ARG)
Assistant Referee 1: Hernan Maidana (ARG)
Assistant Referee 2: Gabriel Chade (ARG)
Fourth Official: Dario Herrera (ARG)
Referee Assessor: Roberto Silvera (URU)