24-25 July 2018Bate Borisov – HJK Helsinki
Referee: Marco Di Bello (ITA, photo)
Assistant Referee 1: Alessandro Costanzo (ITA)
Assistant Referee 2: Giorgio Peretti (ITA)
Fourth Official: Fabio Maresca (ITA)
Referee Observer: Levan Paniashvili (GEO)
Astana – Midtjylland
Referee: Radu Petrescu (ROU)
Assistant Referee 1: Radu Ghinguleac (ROU)
Assistant Referee 2: Mircea Grigoriu (ROU)
Fourth Official: Marcel Bîrsan (ROU)
Referee Observer: Murat Ilgaz (TUR)
CFR Cluj – Malmö FF
Referee: Nikola Dabanović (MNE)
Assistant Referee 1: Djordjije Ražnatović (MNE)
Assistant Referee 2: Marjan Paunović (MNE)
Fourth Official: Miloš Bošković (MNE)
Referee Observer: Iain Robertson Brines (SCO)
PAOK – Basel
Referee: Robert Madley (ENG)
Assistant Referee 1: Ian Hussin (ENG)
Assistant Referee 2: Marc Perry (ENG)
Fourth Official: Jonathan Moss (ENG)
Referee Observer: Alain Hamer (LUX)
GNK Dinamo – Hapoel Beer Sheva
Referee: Ali Palabiyik (TUR)
Assistant Referee 1: Kerem Ersoy (TUR)
Assistant Referee 2: Serkan Olguncan (TUR)
Fourth Official: Alper Ulusoy (TUR)
Referee Observer: László Vágner (HUN)
KF Shkëndija – Sheriff Tiraspol
Referee: Mads-Kristoffer Kristoffersen (DEN)
Assistant Referee 1: Dennis Rasmussen (DEN)
Assistant Referee 2: Victor Skytte (DEN)
Fourth Official: Michael Tykgaard (DEN)
Referee Observer: Nuno Castro (POR)
Crvena Zvezda – FK Sūduva
Referee: Bastian Dankert (GER)
Assistant Referee 1: Markus Häcker (GER)
Assistant Referee 2: Christian Gittelmann (GER)
Fourth Official: Robert Hartmann (GER)
Referee Observer: Fritz Stuchlik (AUT)
Legia Warszawa – Spartak Trnava
Referee: Ádám Farkas (HUN)
Assistant Referee 1: Péter Kóbor (HUN)
Assistant Referee 2: Balázs Szert (HUN)
Fourth Official: Ferenc Karakó (HUN)
Referee Observer: Konrad Plautz (AUT)
PFC Ludogorets – Vidi FC
Referee: Bojan Pandzic (SWE)
Assistant Referee 1: Fredrik Klyver (SWE)
Assistant Referee 2: Mikael Hallin (SWE)
Fourth Official: Kaspar Sjöberg (SWE)
Referee Observer: Edgar Steinborn (GER)
Kukësi – Qarabağ
Referee: Ola Hobber Nilsen (NOR)
Assistant Referee 1: Tom Harald Grønevik (NOR)
Assistant Referee 2: Geir Oskar Isaksen (NOR)
Fourth Official: Kai Erik Steen (NOR)
Referee Observer: Juan Fernández Marín (ESP)
AFC Ajax – Sturm Graz
Referee: Alejandro Hernández Hernández (ESP)
Assistant Referee 1: Teodoro Sobrino Magán (ESP)
Assistant Referee 2: José Naranjo Pérez (ESP)
Fourth Official: José Munuera Montero (ESP)
Referee Observer: Tomasz Mikulski (POL)
Celtic – Rosenborg
Referee: Bart Vertenten (BEL)
Assistant Referee 1: Rien Vanyzere (BEL)
Assistant Referee 2: Thibaud Nijssen (BEL)
Fourth Official: Wesley Alen (BEL)
Referee Observer: Markus Nobs (SUI)
