Feyenoord – FC Porto
Referee: Sergei Karasev (RUS, photo)
Assistant Referee 1: Igor Demeshko (RUS)
Assistant Referee 2: Maksim Gavrilin (RUS)
Fourth Official: Vitali Meshkov (RUS)
Referee Observer: Miroslav Liba (CZE)
FC Astana – FK Partizan
Referee: Mohammed Al-Hakim (SWE)
Assistant Referee 1: Fredrik Klyver (SWE)
Assistant Referee 2: Mahbod Beigi (SWE)
Fourth Official: Martin Strömbergsson (SWE)
Referee Observer: Ichko Lozev (BUL)
BSC Young Boys – Rangers FC
Referee: Manuel Schüttengruber (AUT)
Assistant Referee 1: Roland Brandner (AUT)
Assistant Referee 2: Stefan Kühr (AUT)
Fourth Official: Christopher Jäger (AUT)
Referee Observer: Kevin Azzopardi (MLT)
Ferencvárosi TC – PFC Ludogorets
Referee: Bartosz Frankowski (POL)
Assistant Referee 1: Marcin Boniek (POL)
Assistant Referee 2: Jakub Winkler (POL)
Fourth Official: Daniel Stefański (POL)
Referee Observer: Stephen Lodge (ENG)
CSKA Moskva – Espanyol de Barcelona
Referee: Ali Palabiyik (TUR)
Assistant Referee 1: Serkan Olguncan (TUR)
Assistant Referee 2: Mehmet Satman (TUR)
Fourth Official: Mete Kalkavan (TUR)
Referee Observer: Levan Paniashvili (GEO)
FC Oleksandriya – KAA Gent
Referee: Jens Maae (DEN)
Assistant Referee 1: Jesper Dahl (DEN)
Assistant Referee 2: Victor Skytte (DEN)
Fourth Official: Jørgen Daugbjerg (DEN)
Referee Observer: Juan Fernández Marín (ESP)
AS Saint Étienne – VfL Wolfsburg
Referee: Craig Pawson (ENG)
Assistant Referee 1: Lee Betts (ENG)
Assistant Referee 2: Ian Hussin (ENG)
Fourth Official: David Coote (ENG)
Referee Observer: Goran Mihaljević (MNE)
Wolfsberger AC – AS Roma
Referee: Tiago Martins (POR)
Assistant Referee 1: Luís Campos (POR)
Assistant Referee 2: Pedro Mota (POR)
Fourth Official: Hugo Miguel (POR)
Referee Observer: Bo Karlsson (SWE)
Medipol Başakşehir – Borussia Mönchengladbach
Referee: Stuart Attwell (ENG)
Assistant Referee 1: Constantine Hatzidakis (ENG)
Assistant Referee 2: Daniel Cook (ENG)
Fourth Official: Andrew Madley (ENG)
Referee Observer: Emil Božinovski (MKD)
SC Braga – Slovan Bratislava
Referee: Adrien Jaccottet (SUI)
Assistant Referee 1: Vital Jobin (SUI)
Assistant Referee 2: Raffael Zeder (SUI)
Fourth Official: Alain Bieri (SUI)
Referee Observer: Draženko Kovačič (CRO)
Beşiktaş JK – Wolverhampton Wanderers
Referee: Harald Lechner (AUT)
Assistant Referee 1: Andreas Heidenreich (AUT)
Assistant Referee 2: Maximilian Kolbitsch (AUT)
Fourth Official: Julian Weinberger (AUT)
Referee Observer: Kaj Østergaard (DEN)
AZ Alkmaar – Manchester United
Referee: Gediminas Mažeika (LTU)
Assistant Referee 1: Vytautas Šimkus (LTU)
Assistant Referee 2: Vytenis Kazlauskas (LTU)
Fourth Official: Robertas Valikonis (LTU)
Referee Observer: Sokol Jareci (ALB)
F91 Dudelange – Qarabağ FK
Referee: John Beaton (SCO)
Assistant Referee 1: Daniel McFarlane (SCO)
Assistant Referee 2: Douglas Potter (SCO)
Fourth Official: Donald Robertson (SCO)
Referee Observer: Jon Skjervold (NOR)
Sevilla FC – Apoel FC
Referee: Bas Nijhuis (NED)
Assistant Referee 1: Johan Balder (NED)
Assistant Referee 2: Joost van Zuilen (NED)
Fourth Official: Jeroen Manschot (NED)
Referee Observer: Ferenc Székely (HUN)
FC Lugano – Dynamo Kyiv
Referee: Karim Abed (FRA)
Assistant Referee 1: Mehdi Rahmouni (FRA)
Assistant Referee 2: Benjamin Pagès (FRA)
Fourth Official: Florent Batta (FRA)
Referee Observer: Vlado Svilokos (CRO)
Malmö FF – FC København
Referee: Deniz Aytekin (GER)
Assistant Referee 1: Eduard Beitinger (GER)
Assistant Referee 2: Rafael Foltyn (GER)
Fourth Official: Benjamin Cortus (GER)
Referee Observer: Roberto Rosetti (ITA)
FC Krasnodar – Getafe
Referee: Ivan Bebek (CRO)
Assistant Referee 1: Goran Pataki (CRO)
Assistant Referee 2: Bojan Zobenica (CRO)
Fourth Official: Mario Zebec (CRO)
Referee Observer: Nicolae Grigorescu (ROU)
Trabzonspor – FC Basel
Referee: Marco Di Bello (ITA)
Assistant Referee 1: Alessandro Costanzo (ITA)
Assistant Referee 2: Matteo Passeri (ITA)
Fourth Official: Rosario Abisso (ITA)
Referee Observer: Fritz Stuchlik (AUT)
Rosenborg BK – PSV Eindhoven
Referee: Halil Umut Meler (TUR)
Assistant Referee 1: Mustafa Eyisoy (TUR)
Assistant Referee 2: Cevdet Kömürcüoğlu (TUR)
Fourth Official: Arda Kardeşler (TUR)
Referee Observer: Nikolai Ivanov (RUS)
Sporting CP – Linzer ASK
Referee: Alain Durieux (LUX)
Assistant Referee 1: Gilles Becker (LUX)
Assistant Referee 2: Joaquim Da Silva (LUX)
Fourth Official: Laurent Kopriwa (LUX)
Referee Observer: Bernardino González Vázquez (ESP)
Lazio – Stade Rennais
Referee: Serhiy Boyko (UKR)
Assistant Referee 1: Volodymyr Volodin (UKR)
Assistant Referee 2: Oleksandr Voytyuk (UKR)
Fourth Official: Vitaliy Romanov (UKR)
Referee Observer: Geórgios Bíkas (GRE)
Celtic FC – CFR Cluj
Referee: Daniel Siebert (GER)
Assistant Referee 1: Jan Seidel (GER)
Assistant Referee 2: Stefan Lupp (GER)
Fourth Official: Harm Osmers (GER)
Referee Observer: Martin Ingvarsson (SWE)
Vitória SC – Eintracht Frankfurt
Referee: Radu Petrescu (ROU)
Assistant Referee 1: Radu Ghinguleac (ROU)
Assistant Referee 2: Mircea Grigoriu (ROU)
Fourth Official: Marcel Bîrsan (ROU)
Referee Observer: Rune Pedersen (NOR)
Arsenal FC – Standard de Liège
Referee: Sandro Schärer (SUI)
Assistant Referee 1: Stéphane De Almeida (SUI)
Assistant Referee 2: Bekim Zogaj (SUI)
Fourth Official: Fedayi San (SUI)
Referee Observer: Kýros Vassáras (GRE)
