First Leg, 14 February 2018
Independiente – Gremio
Referee: Roddy Zambrano (ECU, photo)
Assistant Referee 1: Byron Romero (ECU)
Assistant Referee 2: Christian Lescano (ECU)
Fourth Official: Luis Quiroz (ECU)
VAR 1: Mario Díaz de Vivar (PAR)
VAR 2: Milciades Saldívar (PAR)
AVAR: Roberto Tobar (CHI)
Referee Assessor: Alberto Tejada (PER)
Second Leg, 21 February 2018
Gremio – Independiente
Referee: Enrique Caceres (PAR)
Assistant Referee 1: Eduardo Cardozo (PAR)
Assistant Referee 2: Juan Zorrilla (PAR)
Fourth Official: Eber Aquino (PAR)
VAR 1: Andres Cunha (URU)
VAR 2: Nicolas Taran (URU)
AVAR: Jose Argote (VEN)
Referee Assessor: Ubaldo Aquino (PAR)