Djurgardens IF – Apoel
Referee: Juxhin Xhaja (ALB, photo)
Assistant Referee 1: Rejdi Avdo (ALB)
Assistant Referee 2: Dojando Myftari (ALB)
Fourth Official: Kreshnik Bajramaj (ALB)
Referee Observer: Peter Sippel (GER)
Rakow Czestochowa – Slavia Praha
Referee: Rohit Saggi (NOR)
Assistant Referee 1: Geir Isaksen (NOR)
Assistant Referee 2: Morten Jensen (NOR)
Fourth Official: Mohammad Aslam (NOR)
Referee Observer: Raymond Ellingham (WAL)
RFS – Linfield
Referee: Aliyar Agayev (AZE)
Assistant Referee 1: Zeynal Zeynalov (AZE)
Assistant Referee 2: Akif Amirəli (AZE)
Fourth Official: Elçin Masiyev (AZE)
Referee Observer: Miroslav Tulinger (CZE)
CSKA Sofia – FC Basel
Referee: Duje Strukan (CRO)
Assistant Referee 1: Bojan Zobenica (CRO)
Assistant Referee 2: Alen Jakšić (CRO)
Fourth Official: Ivan Bebek (CRO)
Referee Observer: Kostas Kapitanis (CYP)
Maccabi Tel Aviv – OGC Nice
Referee: Allard Lindhout (NED)
Assistant Referee 1: Rogier Honig (NED)
Assistant Referee 2: Roy de Nas (NED)
Fourth Official: Erwin Blank (NED)
Referee Observer: Stefan Messner (AUT)
BSC Young Boys – RSC Anderlecht
Referee: Aleksandar Stavrev (MKD)
Assistant Referee 1: Dejan Kostadinov (MKD)
Assistant Referee 2: Kuštrim Lika (MKD)
Fourth Official: Aleksandar Grujoski (MKD)
Referee Observer: Volodymyr Petrov (UKR)
FC Slovacko – AIK
Referee: Horațiu Feșnic (ROU)
Assistant Referee 1: Valentin Avram (ROU)
Assistant Referee 2: Alexandru Cerei (ROU)
Fourth Official: Sebastian Colțescu (ROU)
Referee Observer: Thomas Einwaller (AUT)
Molde FK – Wolfsberger AC
Referee: Anastasios Papapetrou (GRE)
Assistant Referee 1: Tryfon Petropoulos (GRE)
Assistant Referee 2: Iordanis Aptosoglou (GRE)
Fourth Official: Evangelos Manouchos (GRE)
Referee Observer: Leslie Irvine (NIR)
Universitatea Craiova – Hapoel Beer Sheva
Referee: Nicolas Walsh (SCO)
Assistant Referee 1: Graeme Stewart (SCO)
Assistant Referee 2: Calum Spence (SCO)
Fourth Official: Donald Robertson (SCO)
Referee Observer: Alain Hamer (LUX)
Istanbul Başakşehir – Royal Antwerp
Referee: Jerôme Brisard (FRA)
Assistant Referee 1: Erwan Finjean (FRA)
Assistant Referee 2: Alexis Auger (FRA)
Fourth Official: Thomas Leonard (FRA)
Referee Observer: Elmir Pilav (BIH)
HŠK Zrinjski – Slovan Bratislava
Referee: Julian Weinberger (AUT)
Assistant Referee 1: Maximilian Weiss (AUT)
Assistant Referee 2: Michael Obritzberger (AUT)
Fourth Official: Alan Kijas (AUT)
Referee Observer: Karen Nalbandyan (ARM)
NK Maribor – CFR Cluj
Referee: Pavel Orel (CZE)
Assistant Referee 1: Dan Vodražka (CZE)
Assistant Referee 2: Jirí Kríž (CZE)
Fourth Official: Zbyněk Proske (CZE)
Referee Observer: Igor Pristovnik (CRO)
Lech Poznan – F91 Diddeleng
Referee: Manfredas Lukjančukas (LTU)
Assistant Referee 1: Vytenis Kazlauskas (LTU)
Assistant Referee 2: Edgaras Bučinskas (LTU)
Fourth Official: Kęstutis Bartuškevičius (LTU)
Referee Observer: Emil Božinovski (MKD)
FCSB – Viking FK
Referee: Giorgi Kruashvili (GEO)
Assistant Referee 1: Levan Varamishvili (GEO)
Assistant Referee 2: Zaza Pipia (GEO)
Fourth Official: Davit Kharitonashvili (GEO)
Referee Observer: Bariş Şimşek (TUR)
FC Köln – MOL Fehervar
Referee: Tiago Martins (POR)
Assistant Referee 1: Luis Campos (POR)
Assistant Referee 2: Hugo Ribeiro (POR)
Fourth Official: Luis Godinho (POR)
Referee Observer: Georgios Bikas (GRE)
Villarreal CF – Hajduk Split
Referee: Aleksei Kulbakov (BLR)
Assistant Referee 1: Dmitri Zhuk (BLR)
Assistant Referee 2: Oleg Maslyanko (BLR)
Fourth Official: Viktor Shimusik (BLR)
Referee Observer: Edgar Steinborn (GER)
West Ham United – Viborg FF
Referee: Marco Di Bello (ITA)
Assistant Referee 1: Fabiano Preti (ITA)
Assistant Referee 2: Giorgio Peretti (ITA)
Fourth Official: Juan Sacchi (ITA)
Referee Observer: Alberto Undiano Mallenco (ESP)
FK Skupi – KF Ballkani
Referee: Ivar Kristjansson (ISL)
Assistant Referee 1: Birkir Sigurdarson (ISL)
Assistant Referee 2: Johann Gudmundsson (ISL)
Fourth Official: Thorvaldur Arnason (ISL)
Referee Observer: Jan Wegereef (NED)
ACF Fiorentina – FC Twente
Referee: Daniel Stefanski (PO)
Assistant Referee 1: Dawid Golis (POL)
Assistant Referee 2: Michal Obukowicz (POL)
Fourth Official: Damian Sylwestrzak (POL)
Referee Observer: Niklas a Lidarenda (FRO)
FC Vaduz – Rapid Wien
Referee: Kristo Tohver (EST)
Assistant Referee 1: Silver Koiv (EST)
Assistant Referee 2: Sten Klaasen (EST)
Fourth Official: Martti Pukk (EST)
Referee Observer: Levan Paniashvili (GEO)
FK Partizan – Hamrun Spartans
Referee: Filip Glova (SVK)
Assistant Referee 1: Peter a (SVK)
Assistant Referee 2: Daniel Polaček (SVK)
Fourth Official: Michal Očenaš (SVK)
Referee Observer: Rune Pedersen (NOR)
AZ Alkmaar – Gil Vicente
Referee: Guillermo Cuadra Fernandez (ESP)
Assistant Referee 1: Angel Nevado Rodriguez (ESP)
Assistant Referee 2: Jose Garrido Romero (ESP)
Fourth Official: Pablo Gonzalez Fuertes (ESP)
Referee Observer: Robert Sedlacek (AUT)