16-17 April 2019FC Barcelona – Manchester United
Referee: Felix Brych (GER, photo)
Assistant Referee 1: Mark Borsch (GER)
Assistant Referee 2: Stefan Lupp (GER)
Fourth Official: Pavel Královec (CZE)
VAR: Bastian Dankert (GER)
AVAR: Marco Fritz (GER)
Referee Observer: Patrick Kelly (IRL)
Juventus – AFC Ajax
Referee: Clement Turpin (FRA)
Assistant Referee 1: Nicolas Danos (FRA)
Assistant Referee 2: Cyril Gringore (FRA)
Fourth Official: Benoît Bastien (FRA)
VAR: Nicolas Rainville (FRA)
AVAR: François Letexier (FRA)
Referee Observer: Nikolai Levnikov (RUS)
Manchester City – Tottenham Hotspur
Referee: Cüneyt Çakır (TUR)
Assistant Referee 1: Bahattin Duran (TUR)
Assistant Referee 2: Tarık Ongun (TUR)
Fourth Official: Artur Soares Dias (POR)
VAR: Massimiliano Irrati (ITA)
AVAR: Marco Guida (ITA)
Referee Observer: Domenico Messina (ITA)
FC Porto – Liverpool
Referee: Danny Makkelie (NED)
Assistant Referee 1: Mario Diks (NED)
Assistant Referee 2: Hessel Steegstra (NED)
Fourth Official: Anastasios Sidiropoulos (GRE)
VAR: Pol van Boekel (NED)
AVAR: Jochem Kamphuis (NED)
Referee Observer: Alain Hamer (LUX)