Thank to h_demboveac on Twitter we know the referees who will officiate the first legs of 2018/19 UEFA Europa League Play-offs.
23 August 2018, 18:00 CET - St Petersburg (Stadion Sankt-Peterburg)
FC Zenit (RUS) - Molde FK (NOR)
Referee: Deniz Aytekin (GER)
Assistant Referee 1: Eduard Beitinger (GER)
Assistant Referee 2: Rafael Foltyn (GER)
Fourth Official: Harm Osmers (GER)
UEFA Referee Observer: Sabri Çelik (TUR)
UEFA Delegate: Artur Azaryan (ARM)
23 August 2018, 18:00 CET - Tbilisi (Mikheil Meskhis Stadioni)
FC Torpedo Kutaisi (GEO) - PFC Ludogorets 1945 (BUL)
Referee: Hüseyin Göçek (TUR)
Assistant Referee 1: Kemal Yılmaz (TUR)
Assistant Referee 2: Mustafa Emre Eyisoy (TUR)
Fourth Official: Koray Gençerler (TUR)
UEFA Referee Observer: Petteri Kari (FIN)
UEFA Delegate: Philippe Prudhon (FRA)
23 August 2018, 19:00 CET - Olomouc (Andrův stadion)
SK Sigma Olomouc (CZE) - Sevilla FC (ESP)
Referee: Robert Madden (SCO)
Assistant Referee 1: Francis Connor (SCO)
Assistant Referee 2: Douglas Potter (SCO)
Fourth Official: Donald Robertson (SCO)
UEFA Referee Observer: Stefan Messner (AUT)
UEFA Delegate: Leonid Kaloshin (RUS)
23 August 2018, 19:00 CET - Žilina (Štadión MŠK Žilina)
AS Trenčín (SVK) - AEK Larnaca FC (CYP)
Referee: Antonio Miguel Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrián Devís (ESP)
Assistant Referee 2: Javier Aguilar Rodríguez (ESP)
Fourth Official: Ricardo de Burgos Bengoetxea (ESP)
UEFA Referee Observer: Stephen Lodge (ENG)
UEFA Delegate: Targo Kaldoja (EST)
23 August 2018, 19:00 CET - Nicosia (Stádio GSP)
APOEL FC (CYP) - FC Astana (KAZ)
Referee: Daniel Siebert (GER)
Assistant Referee 1: Jan Seidel (GER)
Assistant Referee 2: Lasse Koslowski (GER)
Fourth Official: Frank Willenborg (GER)
UEFA Referee Observer: Andreas Schluchter (SUI)
UEFA Delegate: Jan Willem van Dop (NED)
23 August 2018, 19:00 CET - Marijampolė (ARVI futbolo arena)
FK Sūduva (LTU) - Celtic FC (SCO)
Referee: Ivan Bebek (CRO)
Assistant Referee 1: Tomislav Petrović (CRO)
Assistant Referee 2: Miro Grgić (CRO)
Fourth Official: Mario Zebec (CRO)
UEFA Referee Observer: Alfredo Trentalange (ITA)
UEFA Delegate: Michał Listkiewicz (POL)
23 August 2018, 19:00 CET - Tiraspol (Stadionul Sheriff)
FC Sheriff Tiraspol (MDA) - Qarabağ FK (AZE)
Referee: Harald Lechner (AUT)
Assistant Referee 1: Andreas Heidenreich (AUT)
Assistant Referee 2: Maximilian Kolbitsch (AUT)
Fourth Official: Julian Weinberger (AUT)
UEFA Referee Observer: Volodymyr Petrov (UKR)
UEFA Delegate: Teuvo Holopainen (FIN)
23 August 2018, 19:05 CET - Sarpsborg (Sarpsborg Stadion)
Sarpsborg 08 FF (NOR) - Maccabi Tel-Aviv FC (ISR)
Referee: Vladislav Bezborodov (RUS)
Assistant Referee 1: Valeriy Danchenko (RUS)
Assistant Referee 2: Maksim Gavrilin (RUS)
Fourth Official: Aleksey Yes'kov (RUS)
UEFA Referee Observer: Andrejs Sipailo (LVA)
UEFA Delegate: Roy Cathcart (NIR)
23 August 2018, 19:15 CET - Malmö (Swedbank Stadion)
Malmö FF (SWE) - FC Midtjylland (DEN)
Referee: Srđan Jovanović (SRB)
Assistant Referee 1: Uroš Stojković (SRB)
Assistant Referee 2: Milan Mihajlović (SRB)
Fourth Official: Novak Simović (SRB)
UEFA Referee Observer: Michális Koukoulákis (GRE)
UEFA Delegate: Alan McRae (SCO)
23 August 2018, 20:00 CET - Basel (St. Jakob-Park)
FC Basel 1893 (SUI) - Apollon Limassol FC (CYP)
Referee: Matej Jug (SVN)
Assistant Referee 1: Manuel Vidali (SVN)
Assistant Referee 2: Grega Kordež (SVN)
Fourth Official: Nejc Kajtazovič (SVN)
UEFA Referee Observer: Jon Eilif Skjervold (NOR)
UEFA Delegate: Michael Appleby (ENG)
23 August 2018, 20:00 CET - Reggio Emilia (Mapei Stadium – Città del Tricolore)
Atalanta BC (ITA) - FC København (DEN)
Referee: Pavel Královec (CZE)
Assistant Referee 1: Ivo Nádvorník (CZE)
Assistant Referee 2: Kamil Hájek (CZE)
Fourth Official: Petr Ardeleánu (CZE)
UEFA Referee Observer: Nuno Alexandre Parreira de Castro (POR)
UEFA Delegate: Ádonis Prokopíou (CYP)
23 August 2018, 20:00 CET - Piraeus (Stádio Geórgios Karaïskákis)
Olympiakós FC (GRE) - Burnley FC (ENG)
Referee: Slavko Vinčič (SVN)
Assistant Referee 1: Tomaž Klančnik (SVN)
Assistant Referee 2: Andraž Kovačič (SVN)
Fourth Official: Rade Obrenovič (SVN)
UEFA Referee Observer: Rune Pedersen (NOR)
UEFA Delegate: Balázs Makray (HUN)
23 August 2018, 20:00 CET - Ljubljana (Stadion Stožice)
NK Olimpija Ljubljana (SVN) - FC Spartak Trnava (SVK)
Referee: Craig Pawson (ENG)
Assistant Referee 1: Stephen Child (ENG)
Assistant Referee 2: Lee Betts (ENG)
Fourth Official: Christopher Kavanagh (ENG)
UEFA Referee Observer: Luciano Luci (ITA)
UEFA Delegate: Alojzije Šupraha (CRO)
23 August 2018, 20:00 CET - Luxembourg (Stade Josy Barthel)
F91 Dudelange (LUX) - CFR 1907 Cluj (ROU)
Referee: Andreas Ekberg (SWE)
Assistant Referee 1: Mehmet Culum (SWE)
Assistant Referee 2: Stefan Hallberg (SWE)
Fourth Official: Kristoffer Karlsson (SWE)
UEFA Referee Observer: Laurent Duhamel (FRA)
UEFA Delegate: Paolo Rondelli (SMR)
23 August 2018, 20:30 CET - Belgrade (Stadion FK Partizan)
FK Partizan (SRB) - Beşiktaş JK (TUR)
Referee: Ivan Kružliak (SVK)
Assistant Referee 1: Tomáš Somoláni (SVK)
Assistant Referee 2: Branislav Hancko (SVK)
Fourth Official: Filip Glova (SVK)
UEFA Referee Observer: Bo Karlsson (SWE)
UEFA Delegate: Dag Steinar Vestlund (NOR)
23 August 2018, 20:30 CET - Vienna (Allianz-Stadion)
SK Rapid Wien (AUT) - FC FCSB (ROU)
Referee: William Collum (SCO)
Assistant Referee 1: David McGeachie (SCO)
Assistant Referee 2: Douglas Ross (SCO)
Fourth Official: Nicolas Walsh (SCO)
UEFA Referee Observer: Sándor Piller (HUN)
UEFA Delegate: Tammo Beishuizen (NED)
23 August 2018, 20:30 CET - Genk (Luminus Arena)
KRC Genk (BEL) - Brøndby IF (DEN)
Referee: Andris Treimanis (LVA)
Assistant Referee 1: Haralds Gudermanis (LVA)
Assistant Referee 2: Aleksejs Spasjonņikovs (LVA)
Fourth Official: Aleksandrs Golubevs (LVA)
UEFA Referee Observer: Manuel Enrique Mejuto González (ESP)
UEFA Delegate: Iva Olivari (CRO)
23 August 2018, 20:30 CET - Zaporizhia (Slavutych-Arena)
FC Zorya Luhansk (UKR) - RB Leipzig (GER)
Referee: Benoît Bastien (FRA)
Assistant Referee 1: Frédéric Haquette (FRA)
Assistant Referee 2: Hicham Zakrani (FRA)
Fourth Official: Benoît Millot (FRA)
UEFA Referee Observer: Alain Hamer (LUX)
UEFA Delegate: Orxan Hüseynzadə (AZE)
23 August 2018, 20:45 CET - Ghent (Ghelamco Arena)
KAA Gent (BEL) - FC Girondins de Bordeaux (FRA)
Referee: Əliyar Ağayev (AZE)
Assistant Referee 1: Zeynal Zeynalov (AZE)
Assistant Referee 2: Rza Məmmədov (AZE)
Fourth Official: Orxan Məmmədov (AZE)
UEFA Referee Observer: Michael Thomas Ross (NIR)
UEFA Delegate: Jovan Šurbatović (SRB)
23 August 2018, 20:45 CET - Glasgow (Ibrox Stadium)
Rangers FC (SCO) - FC Ufa (RUS)
Referee: Daniel Stefański (POL)
Assistant Referee 1: Marcin Boniek (POL)
Assistant Referee 2: Dawid Golis (POL)
Fourth Official: Zbigniew Dobrynin (POL)
UEFA Referee Observer: Michel Piraux (BEL)
UEFA Delegate: Jānis Mežeckis (LVA)
23 August 2018, 20:45 CET - Trondheim (Lerkendal Stadion)
Rosenborg BK (NOR) - KF Shkëndija (MKD)
Referee: Orel Grinfeld (ISR)
Assistant Referee 1: Dvir Shimon (ISR)
Assistant Referee 2: Roy Hassan (ISR)
Fourth Official: Alon Yefet (ISR)
UEFA Referee Observer: Martin Ingvarsson (SWE)
UEFA Delegate: Volodymyr Heninson (UKR)
