2 October 2018CSKA Moskva – Real Madrid
Referee: Ali Palabıyık (TUR, photo)
Assistant Referee 1: Soner Maraş (TUR)
Assistant Referee 2: Bersan Duran (TUR)
Fourth Official: Anastasia Pustovoitova (RUS)
Referee Observer: Aleksei Spirin (RUS)
Bayern München – AFC Ajax
Referee: Vitali Meshkov (RUS)
Assistant Referee 1: Aleksandr Bogdanov (RUS)
Assistant Referee 2: Valentin Murashov (RUS)
Fourth Official: Benedikt Kempkes (GER)
Referee Observer: Thomas Einwaller (AUT)
TSG Hoffenheim – Manchester City
Referee: Juri Frischer (EST)
Assistant Referee 1: Aron Härsing (EST)
Assistant Referee 2: Neeme Neemlaid (EST)
Fourth Official: Patrick Alt (GER)
Referee Observer: Eugen Strigel (GER)
Juventus – Young Boys
Referee: Karim Abed (FRA)
Assistant Referee 1: Stephan Luzi (FRA)
Assistant Referee 2: Mikaël Berchebru (FRA)
Fourth Official: Marco Serra (ITA)
Referee Observer: Ferenc Székely (HUN)
AS Roma – Viktoria Plzeň
Referee: Ádám Farkas (HUN)
Assistant Referee 1: Tibor Csatári (HUN)
Assistant Referee 2: Zsolt Király (HUN)
Fourth Official: Livio Marinelli (ITA)
Referee Observer: Patrițiu Abrudan (ROU)
Olympique Lyonnais – Shakhtar Donetsk
Referee: Nikola Popov (BUL)
Assistant Referee 1: Georgi Todorov (BUL)
Assistant Referee 2: Martin Venev (BUL)
Fourth Official: Jérémie Pignard (FRA)
Referee Observer: Edward Foley (IRL)
AEK Athens – SL Benfica
Referee: Marco Di Bello (ITA)
Assistant Referee 1: Salvatore Longo (ITA)
Assistant Referee 2: Valentino Fiorito (ITA)
Fourth Official: Aristotélis Diamandópoulos (GRE)
Referee Observer: Sabri Çelik (TUR)
Manchester United – Valencia CF
Referee: Ville Nevalainen (FIN)
Assistant Referee 1: Mika Lamppu (FIN)
Assistant Referee 2: Veli-Matti Leppänen (FIN)
Fourth Official: Anthony Backhouse (ENG)
Referee Observer: Brian Lawlor (WAL)
3 October 2018
Atlético de Madrid – Club Brugge
Referee: Robert Harvey (IRL)
Assistant Referee 1: Darren Carey (IRL)
Assistant Referee 2: Shane O'Brien (IRL)
Fourth Official: Miguel Ortiz Arias (ESP)
Referee Observer: Lucílio Batista (POR)
PSV Eindhoven – Internazionale Milano
Referee: Bart Vertenten (BEL)
Assistant Referee 1: Rien Vanyzere (BEL)
Assistant Referee 2: Koen Thijs (BEL)
Fourth Official: Jochem Kamphuis (NED)
Referee Observer: Marinus Koopman (NED)
SSC Napoli – Liverpool FC
Referee: Marius Avram (ROU)
Assistant Referee 1: Valentin Avram (ROU)
Assistant Referee 2: Mihai Marica (ROU)
Fourth Official: Luigi Nasca (ITA)
Referee Observer: Kjell Alseth (NOR)
Paris St. Germain – Crvena Zvezda
Referee: Alan Sant (MLT)
Assistant Referee 1: Mitchell Scerri (MLT)
Assistant Referee 2: Christopher Francalanza (MLT)
Fourth Official: Romain Lissorgue (FRA)
Referee Observer: John Ferry (NIR)
Lokomotiv Moskva – FC Schalke
Referee: Donatas Rumšas (LTU)
Assistant Referee 1: Aleksandr Radiuš (LTU)
Assistant Referee 2: Edgaras Bučinskas (LTU)
Fourth Official: Aleksandra Ponomareva (RUS)
Referee Observer: Aleksandr Gvardis (RUS)
FC Porto – Galatasaray
Referee: Ricardo de Burgos Bengoetxea (ESP)
Assistant Referee 1: Íñigo López de Ceraín (ESP)
Assistant Referee 2: Iker de Francisco Grijalba (ESP)
Fourth Official: Sérgio Gomes Soares (POR)
Referee Observer: António Almeida (POR)
Borussia Dortmund – AS Monaco
Referee: Jens Maae (DEN)
Assistant Referee 1: Victor Skytte (DEN)
Assistant Referee 2: Jesper Dahl (DEN)
Fourth Official: Johann Pfeifer (DEN)
Referee Observer: Konrad Plautz (AUT)
Tottenham Hotspur – FC Barcelona
Referee: Vilhjálmur Thórarinsson (ISL)
Assistant Referee 1: Gylfi Sigurdsson (ISL)
Assistant Referee 2: Oddur Gudmundsson (ISL)
Fourth Official: Alan Young (ENG)
Referee Observer: Peter Jones (ENG)
