Southampton – Midtjylland
Referee: Clément Turpin (FRA, photo)
Assistant Referee 1: Frédéric Cano (FRA)
Assistant Referee 2: Nicolas Danos (FRA)
Fourth Official: Benoît Bastien (FRA)
Referee Observer: Matteo Trefoloni (ITA)
Dinamo Minsk – RB Salzburg
Referee: Miroslav Zelinka (CZE)
Assistant Referee 1: Jan Paták (CZE)
Assistant Referee 2: Radek Kotik (CZE)
Fourth Official: Emanuel Marek (CZE)
Referee Observer: Terje Hauge (NOR)
Qäbälä FK – Panathinaikos
Referee: Andre Marriner (ENG)
Assistant Referee 1: Simon Bennett (ENG)
Assistant Referee 2: Lee Betts (ENG)
Fourth Official: Robert Madley (ENG)
Referee Observer: Zbigniew Przesmycki (POL)
Slovan Liberec – Hajduk Split
Referee: David Fernández Borbalán (ESP)
Assistant Referee 1: Raúl Cabañero Martínez (ESP)
Assistant Referee 2: Jorge Canelo Prieto (ESP)
Fourth Official: Pedro Pérez Montero (ESP)
Referee Observer: László Vagner (HUN)
Zorya Luhansk – Legia Warszawa
Referee: Anastasios Sidiropoulos (GRE)
Assistant Referee 1: Damianos Efthymiadis (GRE)
Assistant Referee 2: Polychronis Kostaras (GRE)
Fourth Official: Ilias Spathas (GRE)
Referee Observer: Juan Fernández Marín (ESP)
Ajax Amsterdam – FK Jablonec
Referee: Tony Chapron (FRA)
Assistant Referee 1: Hicham Zakrani (FRA)
Assistant Referee 2: Alexandre Viala (FRA)
Fourth Official: Wilfried Bien (FRA)
Referee Observer: Peter Jones (ENG)
Molde FK – Standard Liège
Referee: Aleksei Kulbakov (BLR)
Assistant Referee 1: Dmitry Zhuk (BLR)
Assistant Referee 2: Aleh Maslianka (BLR)
Fourth Official: Dzianis Shcharbakou (BLR)
Referee Observer: Vítor Melo Pereira (POR)
PAOK FC – Brøndby IF
Referee: Alberto Undiano Mallenco (ESP)
Assistant Referee 1: Roberto Díaz Pérez (ESP)
Assistant Referee 2: Juan Yuste Jiménez (ESP)
Fourth Official: Eduardo Prieto Iglesias (ESP)
Referee Observer: Adrian Casha (MLT)
FC Krasnodar – HJK Helsinki
Referee: Marijo Strahonja (CRO)
Assistant Referee 1: Ivica Modrić (CRO)
Assistant Referee 2: Dario Vrabec (CRO)
Fourth Official: Fran Jović (CRO)
Referee Observer: Karen Nalbandyan (ARM)
Sparta Praha – FC Thun
Referee: Danny Makkelie (NED)
Assistant Referee 1: Mario Diks (NED)
Assistant Referee 2: Hessel Steegstra (NED)
Fourth Official: Kevin Blom (NED)
Referee Observer: Alexandru Deaconu (ROU)
Milsami Orhei – AS Saint Étienne
Referee: Pawel Gil (POL)
Assistant Referee 1: Piotr Sadczuk (POL)
Assistant Referee 2: Marcin Borkowski (POL)
Fourth Official: Bartosz Frankowski (POL)
Referee Observer: Stefan Messner (AUT)
Young Boys – Qarabağ FK
Referee: Vladislav Bezborodov (RUS)
Assistant Referee 1: Nikolai Golubev (RUS)
Assistant Referee 2: Maksim Gavrilin (RUS)
Fourth Official: Aleksei Eskov (RUS)
Referee Observer: Lassin Isaksen (FRO)
Atromitos – Fenerbahçe
Referee: Daniele Orsato (ITA)
Assistant Referee 1: Lorenzo Manganelli (ITA)
Assistant Referee 2: Andrea Padovan (ITA)
Fourth Official: Andrea Gervasoni (ITA)
Referee Observer: Vladimir Antonov (MDA)
FK Rabotnicki – Rubin Kazan
Referee: István Vad (HUN)
Assistant Referee 1: Peter Berretyán (HUN)
Assistant Referee 2: László Viszokai (HUN)
Fourth Official: Sandor Ando-Szabo (HUN)
Referee Observer: Rune Pedersen (NOR)
Astra Giurgiu – AZ Alkmaar
Referee: Slavko Vinčić (SVN)
Assistant Referee 1: Bojan Ul (SVN)
Assistant Referee 2: Andraž Kovačič (SVN)
Fourth Official: Dragoslav Peric (SVN)
Referee Observer: Jørn West Larsen (DEN)
Steaua Bucureşti – Rosenborg BK
Referee: Luca Banti (ITA)
Assistant Referee 1: Alessandro Costanzo (ITA)
Assistant Referee 2: Alfonso Marrazzo (ITA)
Fourth Official: Daniele Doveri (ITA)
Referee Observer: Georgios Bikas (GRE)
MSK Žilina – Athletic Club
Referee: Ovidiu Hategan (ROU)
Assistant Referee 1: Octavian Sovre (ROU)
Assistant Referee 2: Sebastian Gheorghe (ROU)
Fourth Official: Alexandru Tudor (ROU)
Referee Observer: William Young (SCO)
Altach – Belenenses
Referee: Matej Jug (SVN)
Assistant Referee 1: Matej Žunič (SVN)
Assistant Referee 2: Manuel Vidali (SVN)
Fourth Official: Dejan Balažič (SVN)
Referee Observer: Haim Jakov (ISR)
Odds BK – Borussia Dortmund
Referee: Manuel De Sousa (POR)
Assistant Referee 1: Bertino Miranda (POR)
Assistant Referee 2: Ricardo Santos (POR)
Fourth Official: Costa Verissimo (POR)
Referee Observer: Tomasz Mikulski (POL)
Girondins Bordeaux – Kairat Almaty
Referee: Arnold Hunter (NIR)
Assistant Referee 1: Richard Storey (NIR)
Assistant Referee 2: Gareth Eakin (NIR)
Fourth Official: Raymond Crangle (NIR)
Referee Observer: Darko Čeferin (SVN)
Viktoria Plzen – FK Vojvodina
Referee: Javier Estrada Fernández (ESP)
Assistant Referee 1: Miguel Martínez Munuera (ESP)
Assistant Referee 2: Francisco Martin Garcia (ESP)
Fourth Official: Carlos Clos Gómez (ESP)
Referee Observer: Hans Reijgwart (NED)
Lech Poznán – Videoton FC
Referee: Oliver Drachta (AUT)
Assistant Referee 1: Roland Brandner (AUT)
Assistant Referee 2: Stefan Kühr (AUT)
Fourth Official: Manuel Schüttengruber (AUT)
Referee Observer: Igor Ischenko (UKR)
Referee: Clément Turpin (FRA, photo)
Assistant Referee 1: Frédéric Cano (FRA)
Assistant Referee 2: Nicolas Danos (FRA)
Fourth Official: Benoît Bastien (FRA)
Referee Observer: Matteo Trefoloni (ITA)
Dinamo Minsk – RB Salzburg
Referee: Miroslav Zelinka (CZE)
Assistant Referee 1: Jan Paták (CZE)
Assistant Referee 2: Radek Kotik (CZE)
Fourth Official: Emanuel Marek (CZE)
Referee Observer: Terje Hauge (NOR)
Qäbälä FK – Panathinaikos
Referee: Andre Marriner (ENG)
Assistant Referee 1: Simon Bennett (ENG)
Assistant Referee 2: Lee Betts (ENG)
Fourth Official: Robert Madley (ENG)
Referee Observer: Zbigniew Przesmycki (POL)
Slovan Liberec – Hajduk Split
Referee: David Fernández Borbalán (ESP)
Assistant Referee 1: Raúl Cabañero Martínez (ESP)
Assistant Referee 2: Jorge Canelo Prieto (ESP)
Fourth Official: Pedro Pérez Montero (ESP)
Referee Observer: László Vagner (HUN)
Zorya Luhansk – Legia Warszawa
Referee: Anastasios Sidiropoulos (GRE)
Assistant Referee 1: Damianos Efthymiadis (GRE)
Assistant Referee 2: Polychronis Kostaras (GRE)
Fourth Official: Ilias Spathas (GRE)
Referee Observer: Juan Fernández Marín (ESP)
Ajax Amsterdam – FK Jablonec
Referee: Tony Chapron (FRA)
Assistant Referee 1: Hicham Zakrani (FRA)
Assistant Referee 2: Alexandre Viala (FRA)
Fourth Official: Wilfried Bien (FRA)
Referee Observer: Peter Jones (ENG)
Molde FK – Standard Liège
Referee: Aleksei Kulbakov (BLR)
Assistant Referee 1: Dmitry Zhuk (BLR)
Assistant Referee 2: Aleh Maslianka (BLR)
Fourth Official: Dzianis Shcharbakou (BLR)
Referee Observer: Vítor Melo Pereira (POR)
PAOK FC – Brøndby IF
Referee: Alberto Undiano Mallenco (ESP)
Assistant Referee 1: Roberto Díaz Pérez (ESP)
Assistant Referee 2: Juan Yuste Jiménez (ESP)
Fourth Official: Eduardo Prieto Iglesias (ESP)
Referee Observer: Adrian Casha (MLT)
FC Krasnodar – HJK Helsinki
Referee: Marijo Strahonja (CRO)
Assistant Referee 1: Ivica Modrić (CRO)
Assistant Referee 2: Dario Vrabec (CRO)
Fourth Official: Fran Jović (CRO)
Referee Observer: Karen Nalbandyan (ARM)
Sparta Praha – FC Thun
Referee: Danny Makkelie (NED)
Assistant Referee 1: Mario Diks (NED)
Assistant Referee 2: Hessel Steegstra (NED)
Fourth Official: Kevin Blom (NED)
Referee Observer: Alexandru Deaconu (ROU)
Milsami Orhei – AS Saint Étienne
Referee: Pawel Gil (POL)
Assistant Referee 1: Piotr Sadczuk (POL)
Assistant Referee 2: Marcin Borkowski (POL)
Fourth Official: Bartosz Frankowski (POL)
Referee Observer: Stefan Messner (AUT)
Young Boys – Qarabağ FK
Referee: Vladislav Bezborodov (RUS)
Assistant Referee 1: Nikolai Golubev (RUS)
Assistant Referee 2: Maksim Gavrilin (RUS)
Fourth Official: Aleksei Eskov (RUS)
Referee Observer: Lassin Isaksen (FRO)
Atromitos – Fenerbahçe
Referee: Daniele Orsato (ITA)
Assistant Referee 1: Lorenzo Manganelli (ITA)
Assistant Referee 2: Andrea Padovan (ITA)
Fourth Official: Andrea Gervasoni (ITA)
Referee Observer: Vladimir Antonov (MDA)
FK Rabotnicki – Rubin Kazan
Referee: István Vad (HUN)
Assistant Referee 1: Peter Berretyán (HUN)
Assistant Referee 2: László Viszokai (HUN)
Fourth Official: Sandor Ando-Szabo (HUN)
Referee Observer: Rune Pedersen (NOR)
Astra Giurgiu – AZ Alkmaar
Referee: Slavko Vinčić (SVN)
Assistant Referee 1: Bojan Ul (SVN)
Assistant Referee 2: Andraž Kovačič (SVN)
Fourth Official: Dragoslav Peric (SVN)
Referee Observer: Jørn West Larsen (DEN)
Steaua Bucureşti – Rosenborg BK
Referee: Luca Banti (ITA)
Assistant Referee 1: Alessandro Costanzo (ITA)
Assistant Referee 2: Alfonso Marrazzo (ITA)
Fourth Official: Daniele Doveri (ITA)
Referee Observer: Georgios Bikas (GRE)
MSK Žilina – Athletic Club
Referee: Ovidiu Hategan (ROU)
Assistant Referee 1: Octavian Sovre (ROU)
Assistant Referee 2: Sebastian Gheorghe (ROU)
Fourth Official: Alexandru Tudor (ROU)
Referee Observer: William Young (SCO)
Altach – Belenenses
Referee: Matej Jug (SVN)
Assistant Referee 1: Matej Žunič (SVN)
Assistant Referee 2: Manuel Vidali (SVN)
Fourth Official: Dejan Balažič (SVN)
Referee Observer: Haim Jakov (ISR)
Odds BK – Borussia Dortmund
Referee: Manuel De Sousa (POR)
Assistant Referee 1: Bertino Miranda (POR)
Assistant Referee 2: Ricardo Santos (POR)
Fourth Official: Costa Verissimo (POR)
Referee Observer: Tomasz Mikulski (POL)
Girondins Bordeaux – Kairat Almaty
Referee: Arnold Hunter (NIR)
Assistant Referee 1: Richard Storey (NIR)
Assistant Referee 2: Gareth Eakin (NIR)
Fourth Official: Raymond Crangle (NIR)
Referee Observer: Darko Čeferin (SVN)
Viktoria Plzen – FK Vojvodina
Referee: Javier Estrada Fernández (ESP)
Assistant Referee 1: Miguel Martínez Munuera (ESP)
Assistant Referee 2: Francisco Martin Garcia (ESP)
Fourth Official: Carlos Clos Gómez (ESP)
Referee Observer: Hans Reijgwart (NED)
Lech Poznán – Videoton FC
Referee: Oliver Drachta (AUT)
Assistant Referee 1: Roland Brandner (AUT)
Assistant Referee 2: Stefan Kühr (AUT)
Fourth Official: Manuel Schüttengruber (AUT)
Referee Observer: Igor Ischenko (UKR)