Sabah FK – Borussia Dortmund
Referee: Javier Alberola Rojas ESP (photo)
Assistant Referee 1: Alfredo Rodríguez Moreno ESP
Assistant Referee 2: Carlos Álvarez Fernández ESP
Fourth Official: Víctor García Verdura ESP
VAR: César Soto Grado ESP
AVAR: Valentín Pizarro Gómez ESP
Referee Observer: Michael Riley ENG
Fenerbahce – Slavia Praha
Referee: Ricardo de Burgos Bengoetxea ESP
Assistant Referee 1: Iker De Francisco Grijalba ESP
Assistant Referee 2: Iván Massó Granado ESP
Fourth Official: Adrián Cordero Vega ESP
VAR: Guillermo Cuadra Fernández ESP
AVAR: Javier Iglesias Villanueva ESP
Referee Observer: Aleksandar Stavrev MKD
Paris St. Germain – FC Barcelona
Referee: Michael Oliver ENG
Assistant Referee 1: Stuart Burt ENG
Assistant Referee 2: James Mainwaring ENG
Fourth Official: Robert Jones ENG
VAR: Marco Di Bello ITA
AVAR: Daniele Chiffi ITA
Referee Observer: Rune Pedersen NOR
Liverpool FC – Villarreal CF
Referee: Szymon Marciniak POL
Assistant Referee 1: Tomasz Listkiewicz POL
Assistant Referee 2: Adam Kupsik POL
Fourth Official: Wojciech Myc POL
VAR: Piotr Lasyk POL
AVAR: Benjamin Brand GER
Referee Observer: Itchko Lozev BUL
Manchester City – AEK Athens
Referee: Willy Delajod FRA
Assistant Referee 1: Erwan Finjean FRA
Assistant Referee 2: Valentin Evrard FRA
Fourth Official: Bastien Dechepy FRA
VAR: Bram Van Driessche BEL
AVAR: Christian Dingert GER
Referee Observer: Carlos Velasco Carballo ESP
AS Roma – Slovan Bratislava
Referee: Sandro Schärer SUI
Assistant Referee 1: Stéphane De Almeida SUI
Assistant Referee 2: Jonas Erni SUI
Fourth Official: Anojen Kanagasingam SUI
VAR: Fedayi San SUI
AVAR: Tomasz Kwiatkowski POL
Referee Observer: Peter Sippel GER
FC Porto – PSV Eindhoven
Referee: Daniel Siebert GER
Assistant Referee 1: Jan Seidel GER
Assistant Referee 2: Rafael Foltyn GER
Fourth Official: Max Burda GER
VAR: Sören Storks GER
AVAR: Robert Schröder GER
Referee Observer: Alain Hamer LUX
SSC Napoli – Bodo Glimt
Referee: José Sánchez Martínez ESP
Assistant Referee 1: Raúl Cabañero Martínez ESP
Assistant Referee 2: Íñigo Prieto López ESP
Fourth Official: Juan Martínez Munuera ESP
VAR: Tiago Martins POR
AVAR: Carlos del Cerro Grande ESP
Referee Observer: Leslie Irvine NIR
VfB Stuttgart – Atletico de Madrid
Referee: Serdar Gözübüyük NED
Assistant Referee 1: Patrick Inia NED
Assistant Referee 2: Rogier Honig NED
Fourth Official: Jeroen Manschot NED
VAR: Dennis Higler NED
AVAR: Stuart Attwell ENG
Referee: Javier Alberola Rojas ESP (photo)
Assistant Referee 1: Alfredo Rodríguez Moreno ESP
Assistant Referee 2: Carlos Álvarez Fernández ESP
Fourth Official: Víctor García Verdura ESP
VAR: César Soto Grado ESP
AVAR: Valentín Pizarro Gómez ESP
Referee Observer: Michael Riley ENG
Fenerbahce – Slavia Praha
Referee: Ricardo de Burgos Bengoetxea ESP
Assistant Referee 1: Iker De Francisco Grijalba ESP
Assistant Referee 2: Iván Massó Granado ESP
Fourth Official: Adrián Cordero Vega ESP
VAR: Guillermo Cuadra Fernández ESP
AVAR: Javier Iglesias Villanueva ESP
Referee Observer: Aleksandar Stavrev MKD
Paris St. Germain – FC Barcelona
Referee: Michael Oliver ENG
Assistant Referee 1: Stuart Burt ENG
Assistant Referee 2: James Mainwaring ENG
Fourth Official: Robert Jones ENG
VAR: Marco Di Bello ITA
AVAR: Daniele Chiffi ITA
Referee Observer: Rune Pedersen NOR
Liverpool FC – Villarreal CF
Referee: Szymon Marciniak POL
Assistant Referee 1: Tomasz Listkiewicz POL
Assistant Referee 2: Adam Kupsik POL
Fourth Official: Wojciech Myc POL
VAR: Piotr Lasyk POL
AVAR: Benjamin Brand GER
Referee Observer: Itchko Lozev BUL
Manchester City – AEK Athens
Referee: Willy Delajod FRA
Assistant Referee 1: Erwan Finjean FRA
Assistant Referee 2: Valentin Evrard FRA
Fourth Official: Bastien Dechepy FRA
VAR: Bram Van Driessche BEL
AVAR: Christian Dingert GER
Referee Observer: Carlos Velasco Carballo ESP
AS Roma – Slovan Bratislava
Referee: Sandro Schärer SUI
Assistant Referee 1: Stéphane De Almeida SUI
Assistant Referee 2: Jonas Erni SUI
Fourth Official: Anojen Kanagasingam SUI
VAR: Fedayi San SUI
AVAR: Tomasz Kwiatkowski POL
Referee Observer: Peter Sippel GER
FC Porto – PSV Eindhoven
Referee: Daniel Siebert GER
Assistant Referee 1: Jan Seidel GER
Assistant Referee 2: Rafael Foltyn GER
Fourth Official: Max Burda GER
VAR: Sören Storks GER
AVAR: Robert Schröder GER
Referee Observer: Alain Hamer LUX
SSC Napoli – Bodo Glimt
Referee: José Sánchez Martínez ESP
Assistant Referee 1: Raúl Cabañero Martínez ESP
Assistant Referee 2: Íñigo Prieto López ESP
Fourth Official: Juan Martínez Munuera ESP
VAR: Tiago Martins POR
AVAR: Carlos del Cerro Grande ESP
Referee Observer: Leslie Irvine NIR
VfB Stuttgart – Atletico de Madrid
Referee: Serdar Gözübüyük NED
Assistant Referee 1: Patrick Inia NED
Assistant Referee 2: Rogier Honig NED
Fourth Official: Jeroen Manschot NED
VAR: Dennis Higler NED
AVAR: Stuart Attwell ENG
Referee Observer: Martin Atkinson ENG