Referee: Daniel Stefanski (POL, photo)
Assistant Referee 1: Dawid Golis (POL)
Assistant Referee 2: Michal Obukowicz (POL)
Fourth Official: Damian Sylwestrzak (POL)
VAR: Tomasz Kwiatkowski (POL)
AVAR: Bastian Dankert (GER)
Referee Observer: Bariş Şimşek (TUR)
Zürich – Bodo Glimt
Referee: Yevhenii Aranovskiy (UKR)
Assistant Referee 1: Semen Shlonchak (UKR)
Assistant Referee 2: Oleksandr Berkut (UKR)
Fourth Official: Vitaliy Romanov (UKR)
VAR: David Coote (ENG)
AVAR: Pol van Boekel (NED)
Referee Observer: Manuel Díaz Vega (ESP)
PSV – Arsenal
Referee: Marco Di Bello (ITA)
Assistant Referee 1: Alberto Tegoni (ITA)
Assistant Referee 2: Davide Imperiale (ITA)
Fourth Official: Antonio Rapuano (ITA)
VAR: Massimiliano Irrati (ITA)
AVAR: Abdulkadir Bitigen (TUR)
Referee Observer: Thomas Einwaller (AUT)
Fenerbahçe – Rennes
Referee: Novak Simović (SRB)
Assistant Referee 1: Nikola Djorovic (SRB)
Assistant Referee 2: Miloš Simovic (SRB)
Fourth Official: Andrija Stojanovic (SRB)
VAR: Matej Jug (SVN)
AVAR: Nejc Kajtazovic (SVN)
Referee Observer: Raymond Ellingham (WAL)
AEK Larnaca – Dynamo Kyiv
Referee: John Beaton (SCO)
Assistant Referee 1: Daniel McFarlaine (SCO)
Assistant Referee 2: Douglas Potter (SCO)
Fourth Official: Steven McLean (SCO)
VAR: Jarred Gillett (ENG)
AVAR: Peter Bankes (ENG)
Referee Observer: Miroslav Tulinger (CZE)
Ludogorets – Real Betis
Referee: Harald Lechner (AUT)
Assistant Referee 1: Andreas Heidenreich (AUT)
Assistant Referee 2: Maximilian Kolbitsch (AUT)
Fourth Official: Markus Hameter (AUT)
VAR: Sören Storks (GER)
AVAR: Christian Gittelmann (GER)
Referee Observer: Karen Nalbandyan (ARM)
Malmö – Union St. Gilloise
Referee: Roi Reinshreiber (ISR)
Assistant Referee 1: David Bitton (ISR)
Assistant Referee 2: Sagy Metzamber (ISR)
Fourth Official: Snir Levy (ISR)
VAR: Paolo Valeri (ITA)
AVAR: Jerôme Brisard (FRA)
Referee Observer: Leslie Irvine (NIR)
Union Berlin – Braga
Referee: Craig Pawson (ENG)
Assistant Referee 1: Lee Betts (ENG)
Assistant Referee 2: Daniel Cook (ENG)
Fourth Official: Simon Hooper (ENG)
VAR: Stuart Attwell (ENG)
AVAR: Christopher Kavanagh (ENG)
Referee Observer: Alberto Undiano Mallenco (ESP)
Sturm Graz – Feyenoord
Referee: Espen Eskas (NOR)
Assistant Referee 1: Jan Engan (NOR)
Assistant Referee 2: Isaak Bashevkin (NOR)
Fourth Official: Kristoffer Hagenes (NOR)
VAR: Harm Osmers (GER)
AVAR: Katrin Rafalski (GER)
Referee Observer: Haim Yakov (ISR)
Manchester United – Sheriff
Referee: Anastasios Sidiropoulos (GRE)
Assistant Referee 1: Polychroinis Kostaras (GRE)
Assistant Referee 2: Lazaros Dimitriadis (GRE)
Fourth Official: Aristotelis Diamantopoulos (GRE)
VAR: Marco Fritz (GER)
AVAR: Willy Delajod (FRA)
Referee Observer: Marian Ružbarsky (SVK)
Omonia – Real Sociedad
Referee: Tamas Bognar (HUN)
Assistant Referee 1: Balazs Buzas (HUN)
Assistant Referee 2: Peter Kobor (HUN)
Fourth Official: Balazs Berke (HUN)
VAR: Piotr Lasyk (POL)
AVAR: Pawel Pskit (POL)
Referee Observer: William Young (SCO)
HJK Helsinki – AS Roma
Referee: Tiago Martins (POR)
Assistant Referee 1: Rui Tavares (POR)
Assistant Referee 2: Luis Campos (POR)
Fourth Official: Helder Carvalho (POR)
VAR: Luis Godinho (POR)
AVAR: Hugo Miguel (POR)
Referee Observer: Lutz-Michael Fröhlich (GER)
Freiburg – Olympiakos
Referee: Kristo Tohver (EST)
Assistant Referee 1: Karolin Kaivoja (EST)
Assistant Referee 2: Sten Klaasen (EST)
Fourth Official: Juri Frischer (EST)
VAR: Fedayi San (SUI)
AVAR: Dennis Higler (NED)
Referee Observer: Marinus Koopman (GER)
Nantes – Qarabag
Referee: Jakob Kehlet (DEN)
Assistant Referee 1: Lars Hummelgaard (DEN)
Assistant Referee 2: Victor Skytte (DEN)
Fourth Official: Jorgen Burchardt (DEN)
VAR: Jeroen Manschot (NED)
AVAR: Rob Dieperink (NED)
Referee Observer: Peter Sippel (GER)
Crvena Zvezda – Trabzonspor
Referee: Joao Pinheiro (POR)
Assistant Referee 1: Bruno Jesus (POR)
Assistant Referee 2: Luciano Maia (POR)
Fourth Official: Bruno Costa (POR)
VAR: Marco Guida (ITA)
AVAR: Fabio Maresca (ITA)
Referee Observer: Roberto Rosetti (ITA)
Ferencvaros – AS Monaco
Referee: Enea Jorgji (ALB)
Assistant Referee 1: Denis Rexha (ALB)
Assistant Referee 2: Ridiger Çokaj (ALB)
Fourth Official: Florian Lata (ALB)
VAR: Alejandro Hernandez Hernandez (ESP)
AVAR: Juan Martinez Munuera (ESP)
Referee Observer: Fritz Stuchlik (AUT)
