Olympique Lyonnais – Rangers FC
Referee: Radu Petrescu (ROU, photo)
Assistant Referee 1: Radu Ghinguleac (ROU)
Assistant Referee 2: Mihai Marica (ROU)
Fourth Official: Marcel Birsan (ROU)
VAR: Fedayi San (SUI)
AVAR: Lionel Tschudi (SUI)
Referee Observer: Jouni Hyytia (FIN)
Sparta Praha – Brondby IF
Referee: Craig Pawson (ENG)
Assistant Referee 1: Lee Betts (ENG)
Assistant Referee 2: Ian Hussin (ENG)
Fourth Official: Robert Jones (ENG)
VAR: Peter Bankes (ENG)
AVAR: Neil Davies (ENG)
Referee Observer: Zbigniew Przesmycki (POL)
Sturm Graz – AS Monaco
Referee: Mohammed Al-Hakim (SWE)
Assistant Referee 1: Fredrik Klyver (SWE)
Assistant Referee 2: Robin Wilde (SWE)
Fourth Official: Fredrik Klitte (SWE)
VAR: Ricardo De Burgos Bengoechea (ESP)
AVAR: Javier Estrada Fernandez (ESP)
Referee Observer: Shmuel Shteif (ISR)
Real Sociedad – PSV Eindhoven
Referee: Felix Zwayer (GER)
Assistant Referee 1: Marco Achmülller (GER)
Assistant Referee 2: Mike Pickel (GER)
Fourth Official: Sven Jablonski (GER)
VAR: Marco Fritz (GER)
AVAR: Bastian Dankert (GER)
Referee Observer: Stavros Tritsonis (GRE)
Legia Warszawa – Spartak Moskva
Referee: Matej Jug (SVN)
Assistant Referee 1: Matej Zunic (SVN)
Assistant Referee 2: Robert Vukan (SVN)
Fourth Official: Dragoslav Peric (SVN)
VAR: Jose Sanchez Martinez (ESP)
AVAR: Raul Cabanero Martinez (ESP)
Referee Observer: Uno Tutk (EST)
SSC Napoli – Leicester City
Referee: Antonio Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrian Devis (ESP)
Assistant Referee 2: Roberto Diaz Perez (ESP)
Fourth Official: Jose Munuera Montero (ESP)
VAR: Juan Martinez Munuera (ESP)
AVAR: Willy Delajod (FRA)
Referee Observer: Goran Mihaljević (MNE)
Royal Antwerp – Olympiacos FC
Referee: Marco Di Bello (ITA)
Assistant Referee 1: Daniele Bindoni (ITA)
Assistant Referee 2: Alberto Tegoni (ITA)
Fourth Official: Rosario Abisso (ITA)
VAR: Michael Fabbri (ITA)
AVAR: Fabio Maresca (ITA)
Referee Observer: Lucilio Batista (POR)
Fenerbahçe SK – Eintracht Frankfurt
Referee: Srdjan Jovanovic (SRB)
Assistant Referee 1: Uros Stojkovic (SRB)
Assistant Referee 2: Milan Mihajlovic (SRB)
Fourth Official: Momcilo Markovic (SRB)
VAR: Mario Zebec (CRO)
AVAR: Duje Strukan (CRO)
Referee Observer: Robert Sedlacek (AUT)
Lazio – Galatasaray
Referee: Carlos Del Cerro Grande (ESP)
Assistant Referee 1: Juan Yuste Jimenez (ESP)
Assistant Referee 2: Roberto Alonso Fernandez (ESP)
Fourth Official: Cesar Soto Grado (ESP)
VAR: Alejandro Hernandez Hernandez (ESP)
AVAR: Benoît Millot (FRA)
Referee Observer: Marian Ružbarsky (SVK)
Olympique de Marseille – Lokomotiv Moskva
Referee: William Collum (SCO)
Assistant Referee 1: David McGeachie (SCO)
Assistant Referee 2: Francis Connor (SCO)
Fourth Official: Kevin Clancy (SCO)
VAR: Allard Lindhout (NED)
AVAR: Rob Dieperink (NED)
Referee Observer: Thomas Einwaller (AUT)
PFC Ludogorets – FC Midtjylland
Referee: Tobias Stieler (GER)
Assistant Referee 1: Eduard Beitinger (GER)
Assistant Referee 2: Marcel Unger (GER)
Fourth Official: Florian Badstübner GER)
VAR: Günter Perl (GER)
AVAR: Katrin Rafalski (GER)
Referee Observer: Sokol Jareci (ALB)
SC Braga – Crvena Zvezda
Referee: Marco Guida (ITA)
Assistant Referee 1: Ciro Carbone (ITA)
Assistant Referee 2: Giorgio Peretti (ITA)
Fourth Official: Luca Pairetto (ITA)
VAR: Paolo Valeri (ITA)
AVAR: Amaury Delerue (FRA)
Referee Observer: Carlos Velasco Carballo (ESP)
Celtic FC – Real Betis
Referee: Daniel Stefanski (POL)
Assistant Referee 1: Michal Obukowicz (POL)
Assistant Referee 2: Krzysztof Myrmus (POL)
Fourth Official: Damian Sylwestrzak (POL)
VAR: Pawel Raczkowski (POL)
AVAR: Tomasz Musial (POL)
Referee Observer: Neale Barry (ENG)
Ferencvarosi TC – Bayer Leverkusen
Referee: Kirill Levnikov (RUS)
Assistant Referee 1: Egor Bolkhovitin (RUS)
Assistant Referee 2: Andrei Vereteshkin (RUS)
Fourth Official: Vladislav Bezborodov (RUS)
VAR: Vitali Meshkov (RUS)
AVAR: Sergei Ivanov (RUS)
Referee Observer: Igor Pristovnik (CRO)
KRC Genk – Rapid Wien
Referee: Tiago Martins (POR)
Assistant Referee 1: Luis Campos (POR)
Assistant Referee 2: Pedro Mota (POR)
Fourth Official: Helder Malheiro (POR)
VAR: Luis Godinho (POR)
AVAR: Fabio Verissimo (POR)
Referee Observer: Matteo Trefoloni (ITA)
West Ham United – GNK Dinamo
Referee: Maurizio Mariani (ITA)
Assistant Referee 1: Stefano Alassio (ITA)
Assistant Referee 2: Giovanni Baccini (ITA)
Fourth Official: Daniele Chiffi (ITA)
VAR: Massimiliano Irrati (ITA)
AVAR: Jerôme Brisard (FRA)
Referee Observer: Markus Strömbergsson (SWE)