16-17 August 2017FC Utrecht – FC Zenit
Referee: Slavko Vinčić (SVN, photo)
Assistant Referee 1: Tomaž Klančnik (SVN)
Assistant Referee 2: Andraž Kovačič (SVN)
Fourth Official: Roberto Ponis (SVN)
Referee Observer: László Vagner (HUN)
GNK Dinamo – KF Skënderbeu
Referee: Andris Treimanis (LVA)
Assistant Referee 1: Haralds Gudermanis (LVA)
Assistant Referee 2: Aleksejs Spasjonnikovs (LVA)
Fourth Official: Aleksandrs Golubevs (LVA)
Referee Observer: Jan Wegereef (NED)
Bate Borisov – FC Olexandriya
Referee: Tamás Bognár (HUN)
Assistant Referee 1: Balázs Buzás (HUN)
Assistant Referee 2: Theodoros Georgiou (HUN)
Fourth Official: Ádam Farkas (HUN)
Referee Observer: Robert Malek (POL)
Apollon Limassol – FC Midtjylland
Referee: Michael Oliver (ENG)
Assistant Referee 1: Simon Bennett (ENG)
Assistant Referee 2: Ian Hussin (ENG)
Fourth Official: Stuart Attwell (ENG)
Referee Observer: Sándor Piller (HUN)
FC Krasnodar – Crvena Zvezda
Referee: Gediminas Mažeika (LTU)
Assistant Referee 1: Vytautas Simkus (LTU)
Assistant Referee 2: Vytenis Kazlauskas (LTU)
Fourth Official: Jurij Paskovskij (LTU)
Referee Observer: Marián Ružbarský (SVK)
FH Hafnarfjördur – SC Braga
Referee: Kevin Blom (NED)
Assistant Referee 1: Charles Schaap (NED)
Assistant Referee 2: Jan de Vries (NED)
Fourth Official: Edwin van de Graaf (NED)
Referee Observer: Jon Skjervold (NOR)
PAOK – Östersunds
Referee: Bas Nijhuis (NED)
Assistant Referee 1: Rob van de Ven (NED)
Assistant Referee 2: Davie Goossens (NED)
Fourth Official: Allard Lindhout (NED)
Referee Observer: Nikolai Ivanov (RUS)
Vardar – Fenerbahçe
Referee: Luca Banti (ITA)
Assistant Referee 1: Matteo Passeri (ITA)
Assistant Referee 2: Fabiano Preti (ITA)
Fourth Official: Marco Guida (ITA)
Referee Observer: Drago Kos (SVN)
Viktoria Plzeň – AEK Larnaca
Referee: Matej Jug (SVN)
Assistant Referee 1: Matej Žunič (SVN)
Assistant Referee 2: Manuel Vidali (SVN)
Fourth Official: Nejc Kajtazović (SVN)
Referee Observer: Paulius Malzinskas (LTU)
Ludogorets – Sūduva
Referee: Sébastien Delferiere (BEL)
Assistant Referee 1: Yves De Neve (BEL)
Assistant Referee 2: Rien Vanyzere (BEL)
Fourth Official: Lawrence Visser (BEL)
Referee Observer: Peter Sippel (GER)
SCR Altach – Maccabi Tel Aviv
Referee: Alexei Kulbakov (BLR)
Assistant Referee 1: Dmitry Zhuk (BLR)
Assistant Referee 2: Aleh Maslianka (BLR)
Fourth Official: Dzianis Shcharbakou (BLR)
Referee Observer: Karen Nalbandyan (ARM)
Panathinaikos – Athletic Club
Referee: Manuel De Sousa (POR)
Assistant Referee 1: Alvaro Mesquita (POR)
Assistant Referee 2: Ricardo Santos (POR)
Fourth Official: Carlos Xistra (POR)
Referee Observer: Rodger Gifford (WAL)
Legia Warszawa – FC Sheriff
Referee: Aleksandar Stavrev (MKD)
Assistant Referee 1: Marjan Kirovski (MKD)
Assistant Referee 2: Dejan Kostadinov (MKD)
Fourth Official: Dimitar Meckarovski (MKD)
Referee Observer: Jouni Hyytiä (FIN)
NK Domžale – Olympique Marseille
Referee: Robert Madden (SCO)
Assistant Referee 1: Douglas Gordon Ross (SCO)
Assistant Referee 2: Alastair Mather (SCO)
Fourth Official: Nicolas Walsh (SCO)
Referee Observer: Martin Ingvarsson (SWE)
AFC Ajax – Rosenborg BK
Referee: Craig Thomson (SCO)
Assistant Referee 1: David McGeachie (SCO)
Assistant Referee 2: Alan Mulvanny (SCO)
Fourth Official: Steven McLean (SCO)
Referee Observer: Elmir Pilav (BIH)
FC Viitorul – FC Salzburg
Referee: Anthony Taylor (ENG)
Assistant Referee 1: Gary Beswick (ENG)
Assistant Referee 2: Adam Nunn (ENG)
Fourth Official: Robert Madley (ENG)
Referee Observer: Juan Fernandez Marín (ESP)
Club Brugge – AEK Athens
Referee: Viktor Kassai (HUN)
Assistant Referee 1: Vencel Tóth (HUN)
Assistant Referee 2: György Ring (HUN)
Fourth Official: Sándor Andó-Szabó (HUN)
Referee Observer: Sergey Zuev (RUS)
NK Osijek – Austria Wien
Referee: Deniz Aytekin (GER)
Assistant Referee 1: Guido Kleve (GER)
Assistant Referee 2: Eduard Beitinger (GER)
Fourth Official: Benjamin Cortus (GER)
Referee Observer: Patrick Kelly (IRL)
AC Milan – KF Shkëndija
Referee: Harald Lechner (AUT)
Assistant Referee 1: Andreas Heidenreich (AUT)
Assistant Referee 2: Maximilan Kolbitsch (AUT)
Fourth Official: Julian Weinberger (AUT)
Referee Observer: Sokol Jareci (ALB)
Partizan – Videoton
Referee: John Beaton (SCO)
Assistant Referee 1: Graeme Stewart (SCO)
Assistant Referee 2: Stuart Stevenson (SCO)
Fourth Official: Donald Robertson (SCO)
Referee Observer: Igor Ischenko (UKR)
Everton – Hajduk Split
Referee: Ivan Kružliak (SVK)
Assistant Referee 1: Martin Balko (SVK)
Assistant Referee 2: Branislav Hancko (SVK)
Fourth Official: Boris Marhefka (SVK)
Referee Observer: Luciano Luci (ITA)
CS Marítimo – Dynamo Kyiv
Referee: Jakob Kehlet (DEN)
Assistant Referee 1: Henrik Larsen (DEN)
Assistant Referee 2: Heine Sorensen (DEN)
Fourth Official: Jens Maae (DEN)
Referee Observer: Frank De Bleeckere (BEL)
