16 May 2017
Independiente Medellin – Emelec
Referee: Daniel Fedorczuk (URU, photo)
Assistant Referee 1: Carlos Pastorino (URU)
Assistant Referee 2: Richard Trinidad (URU)
Fourth Official: Christian Ferreyra (URU)
Referee Assessor: Alicio Pena (BRA)
Atletico Mineiro – Godoy Cruz
Referee: Michael Espinoza (PER)
Assistant Referee 1: Victor Raez (PER)
Assistant Referee 2: Stephen Atoche (PER)
Fourth Official: Joel Alarcon (PER)
Referee Assessor: Sergio Cristiano (BRA)
Zulia – Nacional
Referee: Patricio Polic (CHI)
Assistant Referee 1: Marcelo Barraza (CHI)
Assistant Referee 2: Jose Retamal (CHI)
Fourth Official: Carlos Ulloa (CHI)
Referee Assessor: Miguel Buitrago (VEN)
Libertad – Sport Boys
Referee: Alexis Herrera (VEN)
Assistant Referee 1: Franchescoly Chacon (VEN)
Assistant Referee 2: Tulio Moreno (VEN)
Fourth Official: Jose Hoyo (VEN)
Referee Assessor: Carlos Torres (PAR)
17 May 2017
Universidad Catolica – Atletico Paranaense
Referee: Jonathan Fuentes (URU)
Assistant Referee 1: Miguel Nievas (URU)
Assistant Referee 2: Gabriel Popovits (URU)
Fourth Official: Leodan Gonzalez (URU)
Referee Assessor: Jose Buitrago (COL)
San Lorenzo – Flamengo
Referee: Enrique Caceres (PAR)
Assistant Referee 1: Eduardo Cardozo (PAR)
Assistant Referee 2: Juan Zorrilla (PAR)
Fourth Official: Julio Quintana (PAR)
Referee Assessor: Victor Rivera (PER)
Lanus – Chapecoense
Referee: Wilson Lamouroux (COL)
Assistant Referee 1: Wilmar Navarro (COL)
Assistant Referee 2: Dionisio Ruiz (COL)
Fourth Official: Andres Rojas (COL)
Referee Assessor: Angel Sanchez (ARG)
The Strongest – Santos
Referee: Dario Herrera (ARG)
Assistant Referee 1: Diego Bonfa (ARG)
Assistant Referee 2: Ivan Nunez (ARG)
Fourth Official: Jorge Balino (ARG)
Referee Assessor: Martin Vazquez (URU)
Sporting Cristal – Santa Fe
Referee: Nestor Pitana (ARG)
Assistant Referee 1: Hernan Maidana (ARG)
Assistant Referee 2: Juan Belatti (ARG)
Fourth Official: Fernando Espinoza (ARG)
Referee Assessor: Sandro Vera (ECU)
18 May 2017
Melgar – River Plate
Referee: Jesus Valenzuela (VEN)
Assistant Referee 1: Carlos Lopez (VEN)
Assistant Referee 2: Luis Murillo (VEN)
Fourth Official: Marlon Escalante (VEN)
Referee Assessor: Jorge Antequera (BOL)
Botafogo – Atletico Nacional
Referee: Victor Carrillo (PER)
Assistant Referee 1: Coty Carrera (PER)
Assistant Referee 2: Jorge Yupanqui (PER)
Fourth Official: Luis Garay (PER)
Referee Assessor: Ubaldo Aquino (PAR)
Barcelona – Estudiantes
Referee: Eber Aquino (PAR)
Assistant Referee 1: Milciades Saldivar (PAR)
Assistant Referee 2: Rodney Aquino (PAR)
Fourth Official: Arnaldo Samaniego (PAR)
Referee Assessor: Hugo Munoz (CHI)