Legia Warszawa – AZ Alkmaar
Referee: Harald Lechner AUT (photo)
Assistant Referee 1: Andreas Heidenreich AUT
Assistant Referee 2: Maximilian Kolbitsch AUT
Fourth Official: Julian Weinberger AUT
VAR: Manuel Schüttengruber AUT
AVAR: Andreas Heiss AUT
Referee Observer: Albano Janku ALB
HSK Zrinjski – Aston Villa
Referee: Balazs Berke HUN
Assistant Referee 1: Vencel Toth HUN
Assistant Referee 2: Balazs Szert HUN
Fourth Official: Gergő Bogar HUN
VAR: Tamas Bognar HUN
AVAR: Ferenc Karako HUN
Referee Observer: Matteo Trefoloni ITA
KRC Genk – FK Čukarički
Referee: Trustin Farrugia Cann MLT
Assistant Referee 1: Luke Portelli MLT
Assistant Referee 2: Roberto Vella MLT
Fourth Official: Ishmael Barbara MLT
VAR: Bartosz Frankowski POL
AVAR: Pawel Pskit POL
Referee Observer: Dimitar Mečkarovski MKD
Ferencvarosi TC – ACF Fiorentina
Referee: Luis Godinho POR
Assistant Referee 1: Rui Teixeira POR
Assistant Referee 2: Pedro Mota POR
Fourth Official: Ricardo Baixinho POR
VAR: Helder Malheiro POR
AVAR: Vasco Santos POR
Referee Observer: Orhan Erdemir TUR
PAOK FC – HJK Helsinki
Referee: Giorgi Kruashvili GEO
Assistant Referee 1: Levan Varamishvili GEO
Assistant Referee 2: Zaza Pipia GEO
Fourth Official: Aleko Aptsiauri GEO
VAR: Cesar Soto Grado ESP
AVAR: Eduardo Prieto Iglesias ESP
Referee Observer: Volodymyr Petrov UKR
Aberdeen FC – Eintracht Frankfurt
Referee: Miguel Nogueira POR
Assistant Referee 1: Tiago Costa POR
Assistant Referee 2: Luis Campos POR
Fourth Official: Bruno Costa POR
VAR: Fabio Melo POR
AVAR: Gustavo Correia POR
Referee Observer: Michaíl Argyroú CYP
PFK Ludogorets – FC Nordsjaelland
Referee: Ovidiu Hațegan ROU
Assistant Referee 1: Mircea Grigoriu ROU
Assistant Referee 2: Sebastian Gheorghe ROU
Fourth Official: Radu Petrescu ROU
VAR: Horațiu Feșnic ROU
AVAR: Sebastian Colțescu ROU
Referee Observer: Gunnar Jonsson ISL
Fenerbahçe – Spartak Trnava
Referee: Aleksandar Stavrev MKD
Assistant Referee 1: Dejan Kostadinov MKD
Assistant Referee 2: Goce Petreski MKD
Fourth Official: Ivana Projkovska MKD
VAR: Mario Zebec CRO
AVAR: Ante Čuljak CRO
Referee Observer: Igor Șațchii MDA
Slovan Bratislava – Olimpija Ljubljana
Referee: Arda Kardeşler TUR
Assistant Referee 1: Mehmet Tugral TUR
Assistant Referee 2: Deniz Özaral TUR
Fourth Official: Ümit Öztürk TUR
VAR: Koray Gençerler TUR
AVAR: Erkan Engin TUR
Referee Observer: Mark Whitby WAL
LOSC Lille – KI Klaksvik
Referee: Antonio Nobre POR
Assistant Referee 1: Paulo a POR
Assistant Referee 2: Pedro Martins POR
Fourth Official: Helder Carvalho POR
VAR: Hugo Miguel POR
AVAR: Bruno Esteves POR
Referee Observer: Nenad Djokić SRB
Maccabi Tel Aviv – KAA Gent
Referee: Jesus Gil Manzano ESP
Assistant Referee 1: Angel Nevado Rodriguez ESP
Assistant Referee 2: Jose Naranjo Perez ESP
Fourth Official: Miguel Ortiz Arias ESP
VAR: Valentin Pizarro Gomez ESP
AVAR: Isidro Diaz de Mera ESP
Referee Observer: Sven Bindels LUX
Zorya Luhansk – Breidablik
Referee: Tomaš Klíma CZE
Assistant Referee 1: Jan Patak CZE
Assistant Referee 2: Petr Caletka CZE
Fourth Official: Jan Všetečka CZE
VAR: Miroslav Zelinka CZE
AVAR: Ondrej Berka CZE
Referee Observer: Andrejs Sipailo LVA
Viktoria Plzen – Astana FK
Referee: Harald Lechner AUT (photo)
Assistant Referee 1: Andreas Heidenreich AUT
Assistant Referee 2: Maximilian Kolbitsch AUT
Fourth Official: Julian Weinberger AUT
VAR: Manuel Schüttengruber AUT
AVAR: Andreas Heiss AUT
Referee Observer: Albano Janku ALB
HSK Zrinjski – Aston Villa
Referee: Balazs Berke HUN
Assistant Referee 1: Vencel Toth HUN
Assistant Referee 2: Balazs Szert HUN
Fourth Official: Gergő Bogar HUN
VAR: Tamas Bognar HUN
AVAR: Ferenc Karako HUN
Referee Observer: Matteo Trefoloni ITA
KRC Genk – FK Čukarički
Referee: Trustin Farrugia Cann MLT
Assistant Referee 1: Luke Portelli MLT
Assistant Referee 2: Roberto Vella MLT
Fourth Official: Ishmael Barbara MLT
VAR: Bartosz Frankowski POL
AVAR: Pawel Pskit POL
Referee Observer: Dimitar Mečkarovski MKD
Ferencvarosi TC – ACF Fiorentina
Referee: Luis Godinho POR
Assistant Referee 1: Rui Teixeira POR
Assistant Referee 2: Pedro Mota POR
Fourth Official: Ricardo Baixinho POR
VAR: Helder Malheiro POR
AVAR: Vasco Santos POR
Referee Observer: Orhan Erdemir TUR
PAOK FC – HJK Helsinki
Referee: Giorgi Kruashvili GEO
Assistant Referee 1: Levan Varamishvili GEO
Assistant Referee 2: Zaza Pipia GEO
Fourth Official: Aleko Aptsiauri GEO
VAR: Cesar Soto Grado ESP
AVAR: Eduardo Prieto Iglesias ESP
Referee Observer: Volodymyr Petrov UKR
Aberdeen FC – Eintracht Frankfurt
Referee: Miguel Nogueira POR
Assistant Referee 1: Tiago Costa POR
Assistant Referee 2: Luis Campos POR
Fourth Official: Bruno Costa POR
VAR: Fabio Melo POR
AVAR: Gustavo Correia POR
Referee Observer: Michaíl Argyroú CYP
PFK Ludogorets – FC Nordsjaelland
Referee: Ovidiu Hațegan ROU
Assistant Referee 1: Mircea Grigoriu ROU
Assistant Referee 2: Sebastian Gheorghe ROU
Fourth Official: Radu Petrescu ROU
VAR: Horațiu Feșnic ROU
AVAR: Sebastian Colțescu ROU
Referee Observer: Gunnar Jonsson ISL
Fenerbahçe – Spartak Trnava
Referee: Aleksandar Stavrev MKD
Assistant Referee 1: Dejan Kostadinov MKD
Assistant Referee 2: Goce Petreski MKD
Fourth Official: Ivana Projkovska MKD
VAR: Mario Zebec CRO
AVAR: Ante Čuljak CRO
Referee Observer: Igor Șațchii MDA
Slovan Bratislava – Olimpija Ljubljana
Referee: Arda Kardeşler TUR
Assistant Referee 1: Mehmet Tugral TUR
Assistant Referee 2: Deniz Özaral TUR
Fourth Official: Ümit Öztürk TUR
VAR: Koray Gençerler TUR
AVAR: Erkan Engin TUR
Referee Observer: Mark Whitby WAL
LOSC Lille – KI Klaksvik
Referee: Antonio Nobre POR
Assistant Referee 1: Paulo a POR
Assistant Referee 2: Pedro Martins POR
Fourth Official: Helder Carvalho POR
VAR: Hugo Miguel POR
AVAR: Bruno Esteves POR
Referee Observer: Nenad Djokić SRB
Maccabi Tel Aviv – KAA Gent
Referee: Jesus Gil Manzano ESP
Assistant Referee 1: Angel Nevado Rodriguez ESP
Assistant Referee 2: Jose Naranjo Perez ESP
Fourth Official: Miguel Ortiz Arias ESP
VAR: Valentin Pizarro Gomez ESP
AVAR: Isidro Diaz de Mera ESP
Referee Observer: Sven Bindels LUX
Zorya Luhansk – Breidablik
Referee: Tomaš Klíma CZE
Assistant Referee 1: Jan Patak CZE
Assistant Referee 2: Petr Caletka CZE
Fourth Official: Jan Všetečka CZE
VAR: Miroslav Zelinka CZE
AVAR: Ondrej Berka CZE
Referee Observer: Andrejs Sipailo LVA
Viktoria Plzen – Astana FK
Referee: Willy Delajod FRA
Assistant Referee 1: Erwan Finjean FRA
Assistant Referee 2: Philippe Jeanne FRA
Fourth Official: Thomas Leonard FRA
VAR: Eric Wattellier FRA
AVAR: Bastien Dechepy FRA
Referee Observer: Viktor Kassai HUN
GNK Dinamo – FC Ballkani
Referee: Ricardo de Burgos Bengoetxea ESP
Assistant Referee 1: Iker de Francisco Grijalba ESP
Assistant Referee 2: Jon Nunez Fernnadez ESP
Fourth Official: Pablo Gonzalez Fuertes ESP
VAR: Jose Munuera Montero ESP
AVAR: Mario Melero Lopez ESP
Referee Observer: Kevin Parry WAL
Club Brugge – Bodo Glimt
Referee: Anastsios Papapetrou GRE
Assistant Referee 1: Tryfon Petropoulos GRE
Assistant Referee 2: Iordanis Aptosoglou GRE
Fourth Official: Andreas Gamaris GRE
VAR: Angelos Evangelou GRE
AVAR: Evangelos Manouchos GRE
Referee Observer: Domagoj Vučkov CRO
FC Lugano – Beşiktaş
Referee: Pawel Raczkowski POL
Assistant Referee 1: Pawel Sokolnicki POL
Assistant Referee 2: Radoslaw Siejka POL
Fourth Official: Tomasz Musial POL
VAR: Piotr Lasyk POL
AVAR: Pawel Malec POL
Referee Observer: Kristinn Jakobsson ISL
Assistant Referee 1: Erwan Finjean FRA
Assistant Referee 2: Philippe Jeanne FRA
Fourth Official: Thomas Leonard FRA
VAR: Eric Wattellier FRA
AVAR: Bastien Dechepy FRA
Referee Observer: Viktor Kassai HUN
GNK Dinamo – FC Ballkani
Referee: Ricardo de Burgos Bengoetxea ESP
Assistant Referee 1: Iker de Francisco Grijalba ESP
Assistant Referee 2: Jon Nunez Fernnadez ESP
Fourth Official: Pablo Gonzalez Fuertes ESP
VAR: Jose Munuera Montero ESP
AVAR: Mario Melero Lopez ESP
Referee Observer: Kevin Parry WAL
Club Brugge – Bodo Glimt
Referee: Anastsios Papapetrou GRE
Assistant Referee 1: Tryfon Petropoulos GRE
Assistant Referee 2: Iordanis Aptosoglou GRE
Fourth Official: Andreas Gamaris GRE
VAR: Angelos Evangelou GRE
AVAR: Evangelos Manouchos GRE
Referee Observer: Domagoj Vučkov CRO
FC Lugano – Beşiktaş
Referee: Pawel Raczkowski POL
Assistant Referee 1: Pawel Sokolnicki POL
Assistant Referee 2: Radoslaw Siejka POL
Fourth Official: Tomasz Musial POL
VAR: Piotr Lasyk POL
AVAR: Pawel Malec POL
Referee Observer: Kristinn Jakobsson ISL