Gremio – LanusReferee: Julio Bascunan (CHI, photo)
Assistant Referee 1: Carlos Astroza (CHI)
Assistant Referee 2: Christian Schiemann (CHI)
Fourth Official: Diego Haro (PER)
VAR 1: Jesus Valenzuela (VEN)
VAR 2: Christian Lescano (ECU)
AVAR: Roddy Zambrano (ECU)
Referee Assessor: Carlos Torres (PAR)
Referees Committee: Wilson Seneme (BRA)
Second Leg, 29 November 2017
Lanus – Gremio
Referee: Enrique Caceres (PAR)
Assistant Referee 1: Eduardo Cardozo (PAR)
Assistant Referee 2: Juan Zorrilla (PAR)
Fourth Official: Eber Aquino (PAR)
VAR 1: Mario Diaz de Vivar (PAR)
VAR 2: Milciades Saldivar (PAR)
AVAR: Victor Carrillo (PER)
Referee Assessor: Hector Baldassi (ARG)
Referees Committee: Wilson Seneme (BRA)
