Copa Libertadores – Group Stage (Matchday 1)

27 February 2018
Monagas – Cerro Porteño
Referee: Mauro Vigliano (ARG, photo)
Assistant Referee 1: Ezequiel Brailovsky (ARG)
Assistant Referee 2: Lucas Germanotta (ARG)
Fourth Official: Silvio Trucco (ARG)
Referee Assessor: Miguel Buitrago (VEN)

Defensor Sporting – Gremio
Referee: Fernando Rapallini (ARG)
Assistant Referee 1: Hernán Maidana (ARG)
Assistant Referee 2: Juan Belatti (ARG)
Fourth Official: Fernando Espinoza (ARG)
Referee Assessor: Alberto Tejada (PER)

Racing Club – Gremio
Referee: Wilmar Roldán (COL)
Assistant Referee 1: Alexander Guzmán (COL)
Assistant Referee 2: Cristian De La Cruz (COL)
Fourth Official: Carlos Herrera (COL)
Referee Assessor: Juan Lugones (BOL)

Colo Colo – Atlético Nacional
Referee: Wilton Sampaio (BRA)
Assistant Referee 1: Emerson De Carvalho (BRA)
Assistant Referee 2: Marcelo Van Gasse (BRA)
Fourth Official: Wagner Reway (BRA)
Referee Assessor: Ricardo Casas (ARG)

28 February 2018
Nacional – Estudiantes De La Plata
Referee: Mario Díaz de Vivar (PAR)
Assistant Referee 1: Carlos Cáceres (PAR)
Assistant Referee 2: Darío Gaona (PAR)
Fourth Official: José Méndez (PAR)
Referee Assessor: Alberto Tejada (PER)

Delfín – Bolívar
Referee: Rodolpho Toski (BRA)
Assistant Referee 1: Danilo Manis (BRA)
Assistant Referee 2: Fabricio Vilarinho (BRA)
Fourth Official: Dewson Freitas (BRA)
Referee Assessor: Darío Ubriaco (URU)

Millonarios – Corinthians
Referee: Roddy Zambrano (ECU)
Assistant Referee 1: Christian Lescano (ECU)
Assistant Referee 2: Edwin Bravo (ECU)
Fourth Official: Guillermo Guerrero (ECU)
Referee Assessor: Manuel Bernal (PAR)

Flamengo – River Plate

Referee: Víctor Carrillo (PER)
Assistant Referee 1: Jonny Bossio (PER)
Assistant Referee 2: Coty Carrera (PER)
Fourth Official: Joel Alarcón (PER)
Referee Assessor: Juan Cardellino (URU)

1 March 2018
Independiente Santa Fe – Emelec
Referee: Juan Soto (VEN)
Assistant Referee 1: Luis Murillo (VEN)
Assistant Referee 2: Elbis Gómez (VEN)
Fourth Official: Jesús Valenzuela (VEN)
Referee Assessor: Manuel Bernal (PAR)

Real Garcilaso – Santos
Referee: Gery Vargas (BOL)
Assistant Referee 1: José Antelo (BOL)
Assistant Referee 2: Juan Montaño (BOL)
Fourth Official: Luis Yrusta (BOL)
Referee Assessor: Joel Ruiz (PAR)

Deportivo Lara – Independiente
Referee: Diego Haro (PER)
Assistant Referee 1: Michael Orue (PER)
Assistant Referee 2: Jesús Sánchez (PER)
Fourth Official: Luis Garay (PER)
Referee Assessor: Candelario Andarcia (VEN)

Alianza Lima – Boca Juniors
Referee: Daniel Fedorzuck (URU)
Assistant Referee 1: Mauricio Espinosa (URU)
Assistant Referee 2: Nicolás Tarán (URU)
Fourth Official: Gustavo Tejera (URU)
Referee Assessor: Sergio Cristiano (BRA)

Junior – Palmeiras
Referee: Enrique Cáceres (PAR)
Assistant Referee 1: Eduardo Cardozo (PAR)
Assistant Referee 2: Juan Zorrilla (PAR)
Fourth Official: Julio Quintana (PAR)
Referee Assessor: Claudio Puga (CHI)