HJK Helsinki – Maccabi Tel Aviv
Referee: Pavel Orel (CZE, photo)
Assistant Referee 1: Tomas Mokrusch (CZE)
Assistant Referee 2: Radek Kotik (CZE)
Fourth Official: Jan Machalek (CZE)
Referee Observer: David Malcolm (NIR)
Alashkert FC – LASK
Referee: Jens Maae (DEN)
Assistant Referee 1: Victor Skytte (DEN)
Assistant Referee 2: Jesper Dahl (DEN)
Fourth Official: Morten Krogh (DEN)
Referee Observer: Goran Mihaljević (MNE)
Anorthosis Famagusta – Flora Tallinn
Referee: Istvan Vad (HUN)
Assistant Referee 1: Vencel Toth (HUN)
Assistant Referee 2: Istvan Albert (HUN)
Fourth Official: Ferenc Karako (HUN)
Referee Observer: Petteri Kari (FIN)
Bodo Glimt – AS Roma
Referee: Ali Palabiyik (TUR)
Assistant Referee 1: Serkan Olguncan (TUR)
Assistant Referee 2: Ali Ogel (TUR)
Fourth Official: Erkan Ozdamar (TUR)
Referee Observer: Karel Vidlak (CZE)
Feyenoord – Union Berlin
Referee: Giorgi Kruashvili (GEO)
Assistant Referee 1: Levan Varamishvili (GEO)
Assistant Referee 2: Zaza Pipia (GEO)
Fourth Official: Davit Kharitonashvili (GEO)
Referee Observer: Milan Karadžić (SRB)
Maccabi Haifa – Slavia Praha
Referee: Adam Farkas (HUN)
Assistant Referee 1: Balasz Szert (HUN)
Assistant Referee 2: Balasz Szalai (HUN)
Fourth Official: Peter Solymosi (HUN)
Referee Observer: Christos Nicolaides (CYP)
FC Copenhagen – PAOK FC
Referee: Erik Lambrechts (BEL)
Assistant Referee 1: Rien Vanyzere (BEL)
Assistant Referee 2: Jo De Weirdt (BEL)
Fourth Official: Nathan Verboomen (BEL)
Referee Observer: Sergejus Slyva (LTU)
Vitesse – Tottenham Hotspur
Referee: Harm Osmers (GER)
Assistant Referee 1: Marco Achmüller (GER)
Assistant Referee 2: Robert Kempter (GER)
Fourth Official: Robert Schröder (GER)
Referee Observer: Alain Hamer (LUX)
NS Mura – Stade Rennais
Referee: Volen Chinkov (BUL)
Assistant Referee 1: Georgi Todorov (BUL)
Assistant Referee 2: Deniz Sokolov (BUL)
Fourth Official: Nikola Popov (BUL)
Referee Observer: Vadims Direktorenko (LVA)
Qarabag Agdam – Kairat Almaty
Referee: Yevhenii Aranovskyi (UKR)
Assistant Referee 1: Semen Shlonchak (UKR)
Assistant Referee 2: Andrii Skrypka (UKR)
Fourth Official: Vitalii Romanov (UKR)
Referee Observer: Vladimir Antonov (MDA)
FK Partizan – KAA Gent
Referee: Robert Madden (SCO)
Assistant Referee 1: David Roome (SCO)
Assistant Referee 2: Alan Mulvanny (SCO)
Fourth Official: Donald Robertson (SCO)
Referee Observer: Georgi Yordanov (BUL)
CSKA Sofia – Zorya Luhansk
Referee: Manuel Schuttengruber (AUT)
Assistant Referee 1: Roland Brandner (AUT)
Assistant Referee 2: Robert Steinacher (AUT)
Fourth Official: Walter Altmann (AUT)
Referee Observer: Michalis Argyrou (CYP)
CFR Cluj – AZ Alkmaar
Referee: Halis Ozkahya (TUR)
Assistant Referee 1: Ceyhun Sesiguzel (TUR)
Assistant Referee 2: Cevdet Komurcuoglu (TUR)
Fourth Official: Alper Ulusoy (TUR)
Referee Observer: Jon Skjervold (NOR)
FK Jablonec – Randers FC
Referee: Aliyar Aghayev (AZE)
Assistant Referee 1: Zeynal Zeynalov (AZE)
Assistant Referee 2: Akif Amirali (AZE)
Fourth Official: Elchin Masiyev (AZE)
Referee Observer: Igor Pristovnik (CRO)
Slovan Bratislava – Lincoln Red Imps
Referee: Vilhjalmur Thorarinsson (ISL)
Assistant Referee 1: Gylfi Sigurdsson (ISL)
Assistant Referee 2: Birkir Sigurdarson (ISL)
Fourth Official: Helgi Jonasson (ISL)
Referee Observer: Augustus Constantin (ROU)
FC Basel – Omonia FC
Referee: Stepanie Frappart (FRA)
Assistant Referee 1: Mikael Berchebru (FRA)
Assistant Referee 2: Guillaume Debart (FRA)
Fourth Official: Johan Hamel (FRA)
Referee Observer: Orhan Erdemir (TUR)
Assistant Referee 1: Mikael Berchebru (FRA)
Assistant Referee 2: Guillaume Debart (FRA)
Fourth Official: Johan Hamel (FRA)
Referee Observer: Orhan Erdemir (TUR)