Qarabag FK – Olimpija Ljubljana
Referee: Alejandro Hernandez Hernandez (ESP)
Assistant Referee 1: Jose Naranjo Perez (ESP)
Assistant Referee 2: Diego Sanchez Rojo (ESP)
Fourth Official: Alejandro Muniz Ruiz (ESP)
VAR: Juan Martinez Munuera (ESP)
AVAR: Valentin Pizzaro Gomez (ESP)
Referee Observer: Sokol Jareci (ALB)
Zorya Luhansk – Slavia Praha
Referee: Jerôme Brisard (FRA)
Assistant Referee 1: Nicolas Danos (FRA)
Assistant Referee 2: Aurelien Berthomieu (FRA)
Fourth Official: Thomas Leonard (FRA)
VAR: Benoît Millot (FRA)
AVAR: Eric Wattellier (FRA)
Referee Observer: Thomas Einwaller (AUT)
Sheriff Tiraspol – KI Klaksvik
Referee: Halil Meler (TUR)
Assistant Referee 1: Mustafa Eyisoy (TUR)
Assistant Referee 2: Kerem Ersoy (TUR)
Fourth Official: Arda Kardeşler (TUR)
VAR: Mete Kalkavan (TUR)
AVAR: Hakan Ceylan (TUR)
Referee Observer: David Fernandez Borbalan (ESP)
Aris Limassol – Slovan Bratislava
Referee: Erik Lambrechts (BEL)
Assistant Referee 1: Jo De Weirdt (BEL)
Assistant Referee 2: Kevin Monteny (BEL)
Fourth Official: Jasper Vergoote (BEL)
VAR: Bram Van Driessche (BEL)
AVA: Nathan Verboomen (BEL)
Referee Observer: Leslie Irvine (NIR)
Sparta Praha – GNK Dinamo
Referee: Tobias Stieler (GER)
Assistant Referee 1: Christian Gittelmann (GER)
Assistant Referee 2: Mark Borsch (GER)
Fourth Official: Martin Petersen (GER)
VAR: Marco Fritz (GER)
AVAR: Pascal Müller (GER)
Referee Observer: Emil Božinovski (MKD)
FK Čukarički – Olympiakos
Referee: Danny Makkelie (NED)
Assistant Referee 1: Hessel Steegstra (NED)
Assistant Referee 2: Jan de Vries (NED)
Fourth Official: Joey Kooij (NED)
VAR: Rob Dieperink (NED)
AVAR: Erwin Blank (NED)
Referee Observer: Rune Pedersen (NOR)
AFC Ajax – PFK Ludogorets
Referee: Ivan Kružliak (SVK)
Assistant Referee 1: Branislav Hancko (SVK)
Assistant Referee 2: Jan Pozor (SVK)
Fourth Official: Peter Kralovič (SVK)
VAR: Bastian Dankert (GER)
AVAR: Timo Gerach (GER)
Referee Observer: Bernardino Gonzalez Vazquez (ESP)
FC Lugano – Union St. Gilloise
Referee: Harm Osmers (GER)
Assistant Referee 1: Robert Kempter (GER)
Assistant Referee 2: Dominik Schaal (GER)
Fourth Official: Robert Schröder (GER)
VAR: Sören Storks (GER)
AVAR: Riem Hussein (GER)
Referee Observer: Darko Čeferin (SVN)
Aberdeen FC – BK Häcken
Referee: Daniel Siebert (GER)
Assistant Referee 1: Jan Seidel (GER)
Assistant Referee 2: Rafael Foltyn (GER)
Fourth Official: Florian Badstübner (GER)
VAR: Christian Dingert (GER)
AVAR: Benjamin Brand (GER)
Referee Observer: Alexandru Deaconu (ROU)
Zrinjski Mostar – LASK Linz
Referee: Tiago Martins (POR)
Assistant Referee 1: Pedro Martins (POR)
Assistant Referee 2: Paulo Bras (POR)
Fourth Official: Ricardo Baixinho (POR)
VAR: Fabio Oliveira Melo (POR)
AVAR: Gustavo Correia (POR)
Referee Observer: Tomasz Mikulski (POL)
