6-13 March 2019Atletico de Madrid – Real Madrid
Referee: Marco Di Bello (ITA, photo)
Assistant Referee 1: Sergio Ranghetti (ITA)
Assistant Referee 2: Alessandro Lo Cicero (ITA)
Fourth Official: Manuel Pérez Hernández (ESP)
Referee Observer: Luis Medina Cantalejo (ESP)
GNK Dinamo – Liverpool FC
Referee: Sergey Ivanov (RUS)
Assistant Referee 1: Aleksey Lunev (RUS)
Assistant Referee 2: Dmitry Safyan (RUS)
Fourth Official: Ivan Vučković (CRO)
Referee Observer: Miroslav Vitković (CRO)
TSG Hoffenheim – Dynamo Kyiv
Referee: Ádám Farkas (HUN)
Assistant Referee 1: Balázs Szert (HUN)
Assistant Referee 2: Gergő Vígh-Tarsonyi (HUN)
Fourth Official: Robert Kempter (GER)
Referee Observer: Helmut Fleischer (GER)
FC Barcelona – Hertha BSC
Referee: Paul Tierney (ENG)
Assistant Referee 1: Constantine Hatzidakis (ENG)
Assistant Referee 2: Daniel Robathan (ENG)
Fourth Official: Rubén Ávalos Barrera (ESP)
Referee Observer: Bernardino González Vázquez (ESP)
FC Porto – Tottenham Hotspur
Referee: Halil Umut Meler (TUR)
Assistant Referee 1: Gökmen Baltacı (TUR)
Assistant Referee 2: Deniz Özaral (TUR)
Fourth Official: João Ferreira Gonçalves (POR)
Referee Observer: Nuno Castro (POR)
FC Midtjylland – Manchester United
Referee: José Sánchez Martínez (ESP)
Assistant Referee 1: Raúl Cabañero Martínez (ESP)
Assistant Referee 2: José Gallego García (ESP)
Fourth Official: Morten Krogh (DEN)
Referee Observer: Jan Wegereef (NED)
Chelsea FC – Montpellier Hérault
Referee: Kristo Tohver (EST)
Assistant Referee 1: Neeme Neemlaid (EST)
Assistant Referee 2: Jaan Roos (EST)
Fourth Official: John Busby (ENG)
Referee Observer: Peter Jones (ENG)