Chelsea FC – Shamrock Rovers
Referee: Willy Delajod FRA (photo)
Assistant Referee 1: Erwan Finjean FRA
Assistant Referee 2: Philippe Jeanne FRA
Fourth Official: Thomas Leonard FRA
VAR: Bastien Dechepy FRA
AVAR: Jérémie Pignard FRA
Referee Observer: Herbert Fandel GER
LASK Linz – Vikingur Reykjavik
Referee: Mohammed Al-Emara FIN
Assistant Referee 1: Turkka Valjakka FIN
Assistant Referee 2: Juuso Mantere FIN
Fourth Official: Peiman Simani FIN
VAR: Jeroen Manschot NED
AVAR: Richard Martens NED
Referee Observer: Matteo Trefoloni ITA
Real Betis – HJK Helsinki
Referee: Patrik Kolarić CRO
Assistant Referee 1: Luka Pajić CRO
Assistant Referee 2: Ivan Starčević CRO
Fourth Official: Dario Bel CRO
VAR: Mario Zebec CRO
AVAR: Fran Jović CRO
Referee Observer: Stavros Tritsonis GRE
Molde FK – Mlada Boleslav
Referee: Visar Kastrati KOS
Assistant Referee 1: Fatmir Sekiraqa KOS
Assistant Referee 2: Arbnor Bullatovci KOS
Fourth Official: Lirim Jashar KOS
VAR: Luca Pairetto ITA
AVAR: Dardan Çaka KOS
Referee Observer: Kevin Parry WAL
FC Heidenheim – FC St. Gallen
Referee: Javier Alberola Rojas ESP
Assistant Referee 1: Alfredo Rodriguez Moreno ESP
Assistant Referee 2: Iker De Francisco Grijalba ESP
Fourth Official: Alejandro Muñiz Ruiz ESP
VAR: Guillermo Cuadra Fernández ESP
AVAR: José Munuera Montero ESP
Referee Observer: Martin Atkinson ENG
Djugardens IF – Legia Warszawa
Referee: David Šmajc SVN
Assistant Referee 1: David Gabrovec SVN
Assistant Referee 2: Tomaž Cerne SVN
Fourth Official: Aleksandar Matković SVN
VAR: Asmir Sagrković SVN
AVAR: Matej Jug SVN
Referee Observer: Niklas Lídarenda FRO
Apoel – Astana
Referee: Sebastian Gishamer AUT
Assistant Referee 1: Roland Riedel AUT
Assistant Referee 2: Santino Schreiner AUT
Fourth Official: Jakob Semler AUT
VAR: Alan Kijas AUT
AVAR: Josef Spurny AUT
Referee Observer: Kyros Vassaras GRE
Rapid Wien – FC Copenhagen
Referee: John Beaton SCO
Assistant Referee 1: Daniel McFarlane SCO
Assistant Referee 2: David McGeachie SCO
Fourth Official: Calum Scott SCO
VAR: Kevin Clancy SCO
AVAR: Steven McLean SCO
Referee Observer: Jouni Hyytiä FIN
Vitoria SC – AC Fiorentina
Referee: Juxhin Xhaja ALB
Assistant Referee 1: Arber Zalla ALB
Assistant Referee 2: Rejdi Avdo ALB
Fourth Official: Albert Doda ALB
VAR: Robert Schröder GER
AVAR: Kreshnik Barjamaj ALB
Referee Observer: Terje Hauge NOR
Cercle Brugge – Basaksehir
Referee: István Vad HUN
Assistant Referee 1: Vencel Tóth HUN
Assistant Referee 2: Istvan Albert HUN
Fourth Official: Gergo Bogár HUN
VAR: Tamás Bognár HUN
AVAR: Katalin Kulcsár HUN
Referee Observer: Boško Jovanetić SRB
Lugano – Pafos
Referee: Nenad Minaković SRB
Assistant Referee 1: Nikola Borović SRB
Assistant Referee 2: Boško Božović SRB
Fourth Official: Milan Mitić SRB
VAR: Momčilo Marković SRB
AVAR: Aleksandar Živković SRB
Referee Observer: Georgios Bikas GRE
Heart of Midlothian – Petrocub
Referee: Ondřej Berka CZE
Assistant Referee 1: Ivo Nadvornik CZE
Assistant Referee 2: Matěj Vlček CZE
Fourth Official: Ondrej Pechanec CZE
VAR: Paolo Mazzoleni ITA
AVAR: Valerio Marini ITA
Referee Observer: Edgar Steinborn GER
Panathinaikos – Dynamo Minsk
Referee: Rob Hennessy IRL
Assistant Referee 1: Dermot Broughton IRL
Assistant Referee 2: Emmett Dynan IRL
Fourth Official: Kevin O'Sullivan IRL
VAR: Darren England ENG
AVAR: Sian Massey-Ellis ENG
Referee Observer: Georgi Vadachkoria GEO
TSC Backa Topola – Noa FC
Referee: Marian Barbu ROU
Assistant Referee 1: Ovidiu Artene ROU
Assistant Referee 2: Imre Bucsi ROU
Fourth Official: Rares Vidican ROU
VAR: Ovidiu Haţegan ROU
AVAR: Sebastian Colţescu ROU
Referee Observer: Gerard Perry IRL
Borac Banja Luka – Omonia Nicosia
Referee: Mohammed Al-Hakim SWE
Assistant Referee 1: Mehmet Culum SWE
Assistant Referee 2: Fredrik Klyver SWE
Fourth Official: Granit Maqedonci SW
VAR: Jakob Kehlet DEN
AVAR: Sandi Putros DEN
Referee Observer: Augustus Constantin ROU
Jagiellonia Bialystok – Olimpija Ljubljana
Referee: Luis Godinho POR
Assistant Referee 1: Rui Teixeira POR
Assistant Referee 2: Pedro Almeida POR
Fourth Official: Miguel Nogueira POR
VAR: Tiago Martins POR
AVAR: André Narciso POR
Referee Observer: Manuel Díaz Vega ESP
NK Celje – The New Saints
Referee: Lukas Fähndrich SUI
Assistant Referee 1: Guillaume Maire SUI
Assistant Referee 2: Nicolas Müller SUI
Fourth Official: Nico Gianforte SUI
VAR: Lionel Tschudi SUI
AVAR: Johannes von Mandach SUI
Referee Observer: Salustià Ciprés AND
Larne FC – KAA Gent
Referee: Sigurd Kringstad NOR
Assistant Referee 1: Runar Langseth NOR
Assistant Referee 2: Ole Haukasen NOR
Fourth Official: Daniel Higraff NOR
VAR: Tom Hagen NOR
AVAR: Kristoffer Hagenes NOR
Referee Observer: Cyril Zimmermann SUI
