Europa League 2018/19 - Quarterfinals - Referee Appointments (I)

UEFA Referees Committee has chosen the following officials to handle the first leg games to be played for Quarterfinals of 2018/19 Europa League.

11 April 2019, 21:00 CET - London (Emirates Stadium)
Arsenal FC (ENG) - SSC Napoli (ITA)
Referee: Alberto Undiano Mallenco (ESP)
Assistant Referee 1: Raúl Cabañero Martínez (ESP)
Assistant Referee 2: Íñigo Prieto López de Ceraín (ESP)
Fourth Official: Diego Barbero Sevilla (ESP)
Additional Assistant Referee 1: Xavier Estrada Fernández (ESP)
Additional Assistant Referee 2: José Luis Munuera Montero (ESP)
UEFA Referee Observer: Stefan Messner (AUT)
UEFA Delegate: Rainer Koch (GER)

11 April 2019, 21:00 CET - Vila-real (Estadio de la Cerámica)
Villarreal CF (ESP) - Valencia CF (ESP)
Referee: Michael Oliver (ENG)
Assistant Referee 1: Stuart Burt (ENG)
Assistant Referee 2: Simon Bennett (ENG)
Fourth Official: Constantine Hatzidakis (ENG)
Additional Assistant Referee 1: Craig Pawson (ENG)
Additional Assistant Referee 2: Andre Marriner (ENG)
UEFA Referee Observer: Alexandru Deaconu (ROU)
UEFA Delegate: Kieran O'Connor (WAL)

11 April 2019, 21:00 CET - Lisbon (Estádio do SL Benfica)
SL Benfica (POR) - Eintracht Frankfurt (GER)
Referee: Anthony Taylor (ENG)
Assistant Referee 1: Gary Beswick (ENG)
Assistant Referee 2: Adam Nunn (ENG)
Fourth Official: Lee Betts (ENG)
Additional Assistant Referee 1: Stuart Attwell (ENG)
Additional Assistant Referee 2: Martin Atkinson (ENG)
UEFA Referee Observer: Terje Hauge (NOR)
UEFA Delegate: Pierino Lardi (SUI)

11 April 2019, 21:00 CET - Prague (Sinobo Stadium)
SK Slavia Praha (CZE) - Chelsea FC (ENG)
Referee: Felix Zwayer (GER)
Assistant Referee 1: Thorsten Schiffner (GER)
Assistant Referee 2: Marco Achmüller (GER)
Fourth Official: Eduard Beitinger (GER)
Additional Assistant Referee 1: Daniel Siebert (GER)
Additional Assistant Referee 2: Sascha Stegemann (GER)
UEFA Referee Observer: Haim Jakov (ISR)
UEFA Delegate: João Morais (POR)