17 October 2017
Maribor – Liverpool
Referee: Viktor Kassai (HUN, photo)
Assistant Referee 1: György Ring (HUN)
Assistant Referee 2: Vencel Tóth (HUN)
Additional AR 1: Tamás Bognár (HUN)
Additional AR 2: Sándor Andó-Szabó (HUN)
Fourth Official: Balázs Buzás (HUN)
Referee Observer: Michel Piraux (BEL)
Spartak Moskva – Sevilla FC
Referee: Gianluca Rocchi (ITA)
Assistant Referee 1: Elenito Di Liberatore (ITA)
Assistant Referee 2: Filippo Meli (ITA)
Additional AR 1: Luca Banti (ITA)
Additional AR 2: Massimiliano Irrati (ITA)
Fourth Official: Andrea Crispo (ITA)
Referee Observer: Sándor Piller (HUN)
Feyenoord – Shakhtar Donetsk
Referee: Alberto Undiano Mallenco (ESP)
Assistant Referee 1: Roberto Alonso Fernández (ESP)
Assistant Referee 2: Juan Yuste Jiménez (ESP)
Additional AR 1: Javier Estrada Fernández (ESP)
Additional AR 2: José Sánchez Martínez (ESP)
Fourth Official: Raúl Cabañero Martínez (ESP)
Referee Observer: Francesco Bianchi (SUI)
Manchester City – SSC Napoli
Referee: Antonio Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrián Devís (ESP)
Assistant Referee 2: Roberto Díaz Pérez (ESP)
Additional AR 1: Carlos Del Cerro Grande (ESP)
Additional AR 2: Alejandro Hernández Hernández (ESP)
Fourth Official: Teodoro Sobrino Magán (ESP)
Referee Observer: Miroslav Tulinger (CZE)
RB Leipzig – FC Porto
Referee: Paolo Tagliavento (ITA)
Assistant Referee 1: Riccardo Di Fiore (ITA)
Assistant Referee 2: Lorenzo Manganelli (ITA)
Additional AR 1: Paolo Valeri (ITA)
Additional AR 2: Antonio Damato (ITA)
Fourth Official: Fabiano Preti (ITA)
Referee Observer: Peter Fröjdfeldt (SWE)
AS Monaco – Beşiktaş
Referee: Milorad Mažić (SRB)
Assistant Referee 1: Milovan Ristić (SRB)
Assistant Referee 2: Dalibor Djurdjević (SRB)
Additional AR 1: Nenad Djokić (SRB)
Additional AR 2: Danilo Grujić (SRB)
Fourth Official: Nemanja Petrović (SRB)
Referee Observer: Nikolai Ivanov (RUS)
Real Madrid – Tottenham Hotspur
Referee: Szymon Marciniak (POL)
Assistant Referee 1: Paweł Sokolnicki (POL)
Assistant Referee 2: Tomasz Listkiewicz (POL)
Additional AR 1: Paweł Raczkowski (POL)
Additional AR 2: Tomasz Musiał (POL)
Fourth Official: Radosław Siejka (POL)
Referee Observer: Bertrand Layec (FRA)
Apoel – Borussia Dortmund
Referee: Aleksei Kulbakov (BLR)
Assistant Referee 1: Dmitri Zhuk (BLR)
Assistant Referee 2: Oleg Maslyanko (BLR)
Additional AR 1: Denis Scherbakov (BLR)
Additional AR 2: Dmitry Dmitryieu (BLR)
Fourth Official: Yury Khomchenko (BLR)
Referee Observer: Leslie Irvine (NIR)
18 October 2017
Benfica – Manchester United
Referee: Felix Zwayer (GER)
Assistant Referee 1: Thorsten Schiffner (GER)
Assistant Referee 2: Marco Achmüller (GER)
Additional AR 1: Daniel Siebert (GER)
Additional AR 2: Sascha Stegemann (GER)
Fourth Official: Rafael Foltyn (GER)
Referee Observer: Hans Reijgwart (NED)
CSKA Moskva – FC Basel
Referee: Björn Kuipers (NED)
Assistant Referee 1: Sander van Roekel (NED)
Assistant Referee 2: Erwin Zeinstra (NED)
Additional AR 1: Serdar Gözübüyük (NED)
Additional AR 2: Dennis Higler (NED)
Fourth Official: Mario Diks (NED)
Referee Observer: Paulius Malžinskas (LTU)
Bayern München – Celtic
Referee: Sergei Karasev (RUS)
Assistant Referee 1: Anton Averianov (RUS)
Assistant Referee 2: Tikhon Kalugin (RUS)
Additional AR 1: Sergei Lapochkin (RUS)
Additional AR 2: Sergei Ivanov (RUS)
Fourth Official: Maksim Gavrilin (RUS)
Referee Observer: Jaap Uilenberg (NED)
Anderlecht – Paris St. Germain
Referee: Pavel Královec (CZE)
Assistant Referee 1: Roman Slyško (SVK)
Assistant Referee 2: Ivo Nádvorník (CZE)
Additional AR 1: Petr Ardeleánu (CZE)
Additional AR 2: Karel Hrubeš (CZE)
Fourth Official: Martin Wilczek (CZE)
Referee Observer: Tomasz Mikulski (POL)
Qarabağ – Atlético Madrid
Referee: Ruddy Buquet (FRA)
Assistant Referee 1: Guillaume Debart (FRA)
Assistant Referee 2: Frédéric Cano (FRA)
Additional AR 1: Amaury Delerue (FRA)
Additional AR 2: François Letexier (FRA)
Fourth Official: Bertrand Jouannaud (FRA)
Referee Observer: Konrad Plautz (AUT)
Chelsea – AS Roma
Referee: Damir Skomina (SVN)
Assistant Referee 1: Jure Praprotnik (SVN)
Assistant Referee 2: Robert Vukan (SVN)
Additional AR 1: Matej Jug (SVN)
Additional AR 2: Rade Obrenovič (SVN)
Fourth Official: Grega Kordež (SVN)
Referee Observer: Patrick Kelly (IRL)
FC Barcelona – Olympiacos
Referee: William Collum (SCO)
Assistant Referee 1: Francis Connor (SCO)
Assistant Referee 2: Douglas Ross (SCO)
Additional AR 1: John Beaton (SCO)
Additional AR 2: Kevin Clancy (SCO)
Fourth Official: Douglas Potter (SCO)
Referee Observer: Jørn West Larsen (DEN)
Juventus – Sporting
Referee: Michael Oliver (ENG)
Assistant Referee 1: Stuart Burt (ENG)
Assistant Referee 2: Simon Bennett (ENG)
Additional AR 1: Andre Marriner (ENG)
Additional AR 2: Paul Tierney (ENG)
Fourth Official: Harry Lennard (ENG)
Referee Observer: Marc Batta (FRA)