First Leg, 13-14 September 2017San Lorenzo – Lanús
Referee: Wilmar Roldan (COL, photo)
Assistant Referee 1: Alexander Leon (COL)
Assistant Referee 2: Dionisio Ruiz (COL)
Fourth Official: Andres Rojas (COL)
Referee Assessor: Ana Paula Oliveira (BRA)
Barcelona – Santos
Referee: Daniel Fedorczuk (URU)
Assistant Referee 1: Richard Trinidad (URU)
Assistant Referee 2: Gabriel Popovits (URU)
Fourth Official: Esteban Ostojich (URU)
Referee Assessor: Claudio Puga (CHI)
Botafogo – Grêmio
Referee: Jose Argote (VEN)
Assistant Referee 1: Luis Murillo (VEN)
Assistant Referee 2: Carlos Lopez (VEN)
Fourth Official: Alexis Herrera (VEN)
Referee Assessor: Joel Ruiz (PAR)
Jorge Wilstermann – River Plate
Referee: Sandro Ricci (BRA)
Assistant Referee 1: Emerson De Carvalho (BRA)
Assistant Referee 2: Marcelo Van Gasse (BRA)
Fourth Official: Dewson Freitas (BRA)
Referee Assessor: Carlos Herrera (ECU)
Second Leg, 20-21 September 2017
Santos – Barcelona
Referee: Victor Carrillo (PER)
Assistant Referee 1: Raul Lopez (PER)
Assistant Referee 2: Victor Raez (PER)
Fourth Official: Henry Gambetta (PER)
Referee Assessor: Paulo Silva (ARG)
Grêmio – Botafogo
Referee: Patricio Loustau (ARG)
Assistant Referee 1: Juan Belatti (ARG)
Assistant Referee 2: Ezequiel Brailovsky (ARG)
Fourth Official: Jorge Baliño (ARG)
Referee Assessor: Roberto Silvera (URU)
River Plate – Jorge Wilstermann
Referee: Roberto Tobar (CHI)
Assistant Referee 1: Raul Orellana (CHI)
Assistant Referee 2: Carlos Astroza (CHI)
Fourth Official: Patricio Polic (CHI)
Referee Assessor: Victor Rivera (PER)
Lanús – San Lorenzo
Referee: Enrique Cáceres (PAR)
Assistant Referee 1: Eduardo Cardozo (PAR)
Assistant Referee 2: Juan Zorrilla (PAR)
Fourth Official: Julio Quintana (PAR)
Referee Assessor: Jose Buitrago (COL)