Austria Wien – Spartak Trnava
Referee: Alexandru Tudor (ROU, photo)
Assistant Referee 1: Alexandru Cerei (ROU)
Assistant Referee 2: Aurel Onita (ROU)
Fourth Official: Sebastian Coltescu (ROU)
Referee Observer: Volodimir Petrov (UKR)
AEK Larnaca – Spartak Moskva
Referee: Alejandro Hernández Hernández (ESP)
Assistant Referee 1: Teodoro Sobrino Magán (ESP)
Assistant Referee 2: José Naranjo Pérez (ESP)
Fourth Official: José González González (ESP)
Referee Observer: Vladimir Antonov (MDA)
FC Oleksandriya – Hajduk Split
Referee: Gediminas Mažeika (LTU)
Assistant Referee 1: Vytautas Simkus (LTU)
Assistant Referee 2: Vytenis Kazlauskas (LTU)
Fourth Official: Donatas Šimėnas (LTU)
Referee Observer: Goran Mihaljević (MNE)
Heracles Almelo – FC Arouca
Referee: Charalampos Kalogeropoulos (GRE)
Assistant Referee 1: Chasan Koula (GRE)
Assistant Referee 2: Tryfon Petropoulos (GRE)
Fourth Official: Georgios Kyzas (GRE)
Referee Observer: Tomasz Mikulski (POL)
LOSC Lille – FK Qäbälä
Referee: Daniel Stefanski (POL)
Assistant Referee 1: Rafal Rostkowski (POL)
Assistant Referee 2: Dawid Golis (POL)
Fourth Official: Zbigniew Dobrynin (POL)
Referee Observer: Frank De Bleeckere (BEL)
Torpedo Zhodino – Rapid Wien
Referee: Thorvaldur Arnason (ISL)
Assistant Referee 1: Gunnar Gudmundsson (ISL)
Assistant Referee 2: Gylfi Sigurdsson (ISL)
Fourth Official: Thoroddur Hjaltalin (ISL)
Referee Observer: Marinus Koopman (NED)
FK Jelgava – Beitar Jerusalem
Referee: Georgi Kabakov (BUL)
Assistant Referee 1: Martin Margaritov (BUL)
Assistant Referee 2: Martin Venev (BUL)
Fourth Official: Ivaylo Stoyanov (BUL)
Referee Observer: William Young (SCO)
Zagłębie Lubin – Sonderjyske
Referee: Robert Madley (ENG)
Assistant Referee 1: Stephen Child (ENG)
Assistant Referee 2: Ian Hussin (ENG)
Fourth Official: Kevin Friend (ENG)
Referee Observer: Jan Wegereef (NED)
Lokomotiva Zagreb – Vorskla Poltava
Referee: Harald Lechner (AUT)
Assistant Referee 1: Andreas Heidenreich (AUT)
Assistant Referee 2: Maximilian Kolbitsch (AUT)
Fourth Official: Julian Weinberger (AUT)
Referee Observer: Rune Pedersen (NOR)
Slavia Praha – Rio Ave
Referee: Sergey Lapochkin (RUS)
Assistant Referee 1: Aleksei Lebedev (RUS)
Assistant Referee 2: Aleksandr Kudriavtsev (RUS)
Fourth Official: Mikhail Vilkov (RUS)
Referee Observer: Zoran Petrović (SRB)
IFK Göteborg – HJK Helsinki
Referee: Kevin Clancy (SCO)
Assistant Referee 1: Douglas Ross (SCO)
Assistant Referee 2: Douglas Potter (SCO)
Fourth Official: John Beaton (SCO)
Referee Observer: Georgios Bikas (GRE)
İstanbul Başakşehir – HNK Rijeka
Referee: Svein Erik Edvartsen (NOR)
Assistant Referee 1: Magnus Lundberg (NOR)
Assistant Referee 2: Jan Erik Engan (NOR)
Fourth Official: Dag Vidar Hafsås (NOR)
Referee Observer: Gerard Perry (IRL)
Birkirkara FC – Kuban Krasnodar
Referee: Bart Vertenten (BEL)
Assistant Referee 1: Rien Vanyzere (BEL)
Assistant Referee 2: Thibaud Nijssen (BEL)
Fourth Official: Bram Van Driessche (BEL)
Referee Observer: Manuel Mejuto González (ESP)
FC Luzern – Sassuolo Calcio
Referee: Andreas Ekberg (SWE)
Assistant Referee 1: Fredrik Nilsson (SWE)
Assistant Referee 2: Mehmet Culum (SWE)
Fourth Official: Kristoffer Karlsson (SWE)
Referee Observer: Jaap Uilenberg (NED)
Grasshoppers – Apollon Limassol
Referee: Andris Treimanis (LVA)
Assistant Referee 1: Haralds Gudermanis (LVA)
Assistant Referee 2: Aleksejs Spasjonnikovs (LVA)
Fourth Official: Aleksandrs Golubevs (LVA)
Referee Observer: Nikolai Levnikov (RUS)
KRC Genk – Cork City
Referee: Clayton Pisani (MLT)
Assistant Referee 1: Alan Camilleri (MLT)
Assistant Referee 2: Edward Spiteri (MLT)
Fourth Official: Philip Farrugia (MLT)
Referee Observer: Kjell Alseth (NOR)
Osmanlispor – Nõmme Kalju
Referee: Nikola Dabanović (MNE)
Assistant Referee 1: Djordjije Ražnatović (MNE)
Assistant Referee 2: Nikola Radulović (MNE)
Fourth Official: Miloš Bošković (MNE)
Referee Observer: Manuel López Fernández (ESP)
Pandurii Târgu Jiu – Maccabi Tel Aviv
Referee: Sergii Boiko (UKR)
Assistant Referee 1: Oleksandr Voytyuk (UKR)
Assistant Referee 2: Volodymyr Volodin (UKR)
Fourth Official: Oleksandr Derdo (UKR)
Referee Observer: Ichko Lozev (BUL)
FK Shkëndija – Mladá Boleslav (CZE)
Referee: Artyom Kuchin (KAZ)
Assistant Referee 1: Yevgeniy Belskiy (KAZ)
Assistant Referee 2: Anatoliy Khodin (KAZ)
Fourth Official: Aleksander Gauzer (KAZ)
Referee Observer: Alexandru Deaconu (ROU)
FK Vojvodina – Dinamo Minsk
Referee: Oliver Drachta (AUT)
Assistant Referee 1: Roland Brandner (AUT)
Assistant Referee 2: Andreas Rothmann (AUT)
Fourth Official: Dieter Muckenhammer (AUT)
Referee Observer: Christoforos Zografos (GRE)
Panathinaikos – AIK Solna
Referee: Bastian Dankert (GER)
Assistant Referee 1: Markus Häcker (GER)
Assistant Referee 2: René Rohde (GER)
Fourth Official: Benjamin Brand (GER)
Referee Observer: Miroslav Tulinger (CZE)
Hertha BSC – Brøndby IF (DEN)
Referee: Kevin Blom (NED)
Assistant Referee 1: Patrick Langkamp (NED)
Assistant Referee 2: Joost Van Zuilen (NED)
Fourth Official: Edwin van de Graaf (NED)
Referee Observer: Marián Ružbarský (SVK)
KAA Gent – Viitorul Constanța
Referee: Stephan Klossner (SUI)
Assistant Referee 1: Remy Zgraggen (SUI)
Assistant Referee 2: Marco Zürcher (SUI)
Fourth Official: Sascha Amhof (SUI)
Referee Observer: Oguz Sarvan (TUR)
Videoton FC – Midtjylland FC
Referee: Ville Nevalainen (FIN)
Assistant Referee 1: Ville Koskiniemi (FIN)
Assistant Referee 2: Sami Nykänen (FIN)
Fourth Official: Dennis Antamo (FIN)
Referee Observer: Gevorg Hovhannisyan (ARM)
NK Domžale – West Ham
Referee: Mete Kalkavan (TUR)
Assistant Referee 1: Ceyhun Sesiguzel (TUR)
Assistant Referee 2: Aleks Tascioglu (TUR)
Fourth Official: Tolga Özkalfa (TUR)
Referee Observer: Luciano Luci (ITA)
AZ Alkmaar – PAS Giannina
Referee: Mattias Gestranius (FIN)
Assistant Referee 1: Jan-Peter Aravirta (FIN)
Assistant Referee 2: Mikko Alakare (FIN)
Fourth Official: Antti Munukka (FIN)
Referee Observer: Eyjolfur Olafsson (ISL)
FC Aberdeen – NK Maribor
Referee: Tore Hansen (NOR)
Assistant Referee 1: Jon-Michael Knutsen (NOR)
Assistant Referee 2: Øystein Ytterland (NOR)
Fourth Official: Kai Erik Steen (NOR)
Referee Observer: Lassin Isaksen (FRO)
AS Saint Étienne – AEK Athens
Referee: Antonio Damato (ITA)
Assistant Referee 1: Riccardo Di Fiore (ITA)
Assistant Referee 2: Salvatore Longo (ITA)
Fourth Official: Domenico Celi (ITA)
Referee Observer: Erol Ersoy (TUR)
Admira Wacker Mödling – Slovan Liberec
Referee: Halis Özkahya (TUR)
Assistant Referee 1: Cem Satman (TUR)
Assistant Referee 2: Ekrem Kan (TUR)
Fourth Official: Ali Palabiyik (TUR)
Referee Observer: Igor Ischenko (UKR)