Ruzomberok – Trabzonspor
Referee: Bastian Dankert GER (photo)
Assistant Referee 1: Lasse Koslowski GER
Assistant Referee 2: René Rohde GER
Fourth Official: Timo Gerach GER
VAR: Harm Osmers GER
AVAR: Patrick Hanslbauer GER
Referee Observer: Rien Koopman NED
Wisla Krakow – Rapid Wien
Referee: Mohammed Al-Emara FIN
Assistant Referee 1: Turkka Valjakka FIN
Assistant Referee 2: Juuso Mantere FIN
Fourth Official: Peiman Simani FIN
VAR: Jakob Kehlet DEN
AVAR: Jonas Hansen DEN
Referee Observer: Cyril Zimmermann SUI
Molde – Silkeborg
Referee: Adam Ladebäck SWE
Assistant Referee 1: Mehmet Culum SWE
Assistant Referee 2: Daniel Yng SWE
Fourth Official: Mohammed Al-Hakim SWE
VAR: Jochem Kamphuis NED
AVAR: Richard Martens NED
Referee Observer: Uno Tutk EST
Sheriff Tiraspol – Elfsborg
Referee: Marek Radina CZE
Assistant Referee 1: Petr Caletka CZE
Assistant Referee 2: Jan Váňa CZE
Fourth Official: Karel Rouček CZE
VAR: Miroslav Zelinka CZE
AVAR: Tomáš Kocourek CZE
Referee Observer: Boško Jovanetić SRB
Corvinul – Rijeka
Referee: Philip Farrugia MLT
Assistant Referee 1: Alan Camilleri MLT
Assistant Referee 2: Luke Portelli MLT
Fourth Official: Alex Johnson MLT
VAR: Gianluca Aureliano ITA
AVAR: Matteo Gariglio ITA
Referee Observer: Alberto Undiano Mallenco ESP
Panathinaikos – Plovdiv
Referee: David Fuxman ISR
Assistant Referee 1: Omer Barbiro ISR
Assistant Referee 2: Tuval Koltunoff ISR
Fourth Official: Idan Leiba ISR
VAR: Daniel Natan ISR
AVAR: David Biton ISR
Referee Observer: David Malcolm NIR
Ajax – Vojvodina
Referee: César Soto Grado ESP
Assistant Referee 1: Iván Massó Granado ESP
Assistant Referee 2: Carlos Álvarez Fernández ESP
Fourth Official: Victor García Verdura ESP
VAR: José Munuera Montero ESP
AVAR: Francisco Hernández Maeso ESP
Referee Observer: Lassin Isaksen FRO
Kilmarnock – Brugge
Referee: Martin Dohál SVK
Assistant Referee 1: František Ferenc SVK
Assistant Referee 2: Tomáš Vorel SVK
Fourth Official: Peter Ziemba SVK
VAR: Michal Očenáš SVK
AVAR: Filip Glova SVK
Referee Observer: Kristinn Jakobsson ISL
SC Braga – Maccabi Petah Tikva
Referee: Luca Pairetto ITA
Assistant Referee 1: Alessio Berti ITA
Assistant Referee 2: Khaled Bahri ITA
Fourth Official: Matteo Marchetti ITA
VAR: Valerio Marini ITA
AVAR: Paolo Mazzoleni ITA
Referee Observer: Edward Foley IRL