Hoffenheim – Liverpool
Referee: Björn Kuipers (NED, photo)
Assistant Referee 1: Sander van Roekel (NED)
Assistant Referee 2: Erwin Zeinstra (NED)
Additional AR1: Pol van Boekel (NED)
Additional AR2: Dennis Higler (NED)
Fourth Official: Mario Diks (NED)
Referee Observer: Georgios Bikas (GRE)
Qarabağ Ağdam – FC Kobenhavn
Referee: Paolo Tagliavento (ITA)
Assistant Referee 1: Alessandro Giallatini (ITA)
Assistant Referee 2: Alessandro Costanzo (ITA)
Additional AR1: Massimiliano Irrati (ITA)
Additional AR2: Antonio Damato (ITA)
Fourth Official: Filippo Meli (ITA)
Referee Observer: Fritz Stuchlik (AUT)
Sporting – Steaua
Referee: Felix Brych (GER)
Assistant Referee 1: Mark Borsch (GER)
Assistant Referee 2: Stefan Lupp (GER)
Additional AR1: Bastian Dankert (GER)
Additional AR2: Marco Fritz (GER)
Fourth Official: Christian Gittelmann (GER)
Referee Observer: Alain Hamer (LUX)
Apoel – Slavia Praha
Referee: Antonio Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrián Devís (ESP)
Assistant Referee 2: Roberto Díaz Pérez (ESP)
Additional AR1: Jesús Gil Manzano (ESP)
Additional AR2: Carlos Del Cerro Grande (ESP)
Fourth Official: Teodoro Sobrino Magán (ESP)
Referee Observer: Matteo Trefoloni (ITA)
Young Boys – CSKA Moskva
Referee: David Fernández Borbalan (ESP)
Assistant Referee 1: Roberto Alonso Fernández (ESP)
Assistant Referee 2: Diego Barbero Sevilla (ESP)
Additional AR1: Javier Estrada Fernández (ESP)
Additional AR2: Juan Martínez Munuera (ESP)
Fourth Official: Juan Yuste Jiménez (ESP)
Referee Observer: Gylfi Orrason (ISL)
16 August 2017
Napoli – Nice
Referee: Szymon Marciniak (POL)
Assistant Referee 1: Paweł Sokolnicki (POL)
Assistant Referee 2: Tomasz Listkiewicz (POL)
Additional AR1: Paweł Raczkowski (POL)
Additional AR2: Tomasz Musiał (POL)
Fourth Official: Radosław Siejka (POL)
Referee Observer: Francesco Bianchi (SUI)
İstanbul Başakşehir – Sevilla FC
Referee: Clément Turpin (FRA)
Assistant Referee 1: Nicolas Danos (FRA)
Assistant Referee 2: Cyril Gringore (FRA)
Additional AR1: Ruddy Buquet (FRA)
Additional AR2: Nicolas Rainville (FRA)
Fourth Official: Hicham Zakrani (FRA)
Referee Observer: Rune Pedersen (NOR)
Hapoel Beer Sheva – NK Maribor
Referee: Jonas Eriksson (SWE)
Assistant Referee 1: Mathias Klasenius (SWE)
Assistant Referee 2: Daniel Wärnmark (SWE)
Additional AR1: Stefan Johannesson (SWE)
Additional AR2: Andreas Ekberg (SWE)
Fourth Official: Joakim Nilsson (SWE)
Referee Observer: Leslie Irvine (NIR)
Celtic – Astana
Referee: Ovidiu Haţegan (ROU)
Assistant Referee 1: Octavian Șovre (ROU)
Assistant Referee 2: Sebastian Gheorghe (ROU)
Additional AR1: István Kovács (ROU)
Additional AR2: Sebastian Colţescu (ROU)
Fourth Official: Radu Ghinguleac (ROU)
Referee Observer: Herbert Fandel (GER)
Olympiacos – Rijeka
Referee: Felix Zwayer (GER)
Assistant Referee 1: Marco Achmüller (GER)
Assistant Referee 2: Jan Seidel (GER)
Additional AR1: Daniel Siebert (GER)
Additional AR2: Patrick Ittrich (GER)
Fourth Official: Rafael Foltyn (GER)
Referee Observer: Manuel Mejuto Gonzalez (ESP)
