Match officials to May 19

The match officials for this week’s action have been confirmed, with John Lacey taking charge of the first PRO14 semi-final between Glasgow and Ulster.

PRO14

Semifinals

Glasgow Warriors vs Ulster @ Scotstoun Stadium Referee: John Lacey (Ireland) Assistant referees: Andrew Brace (Ireland), George Clancy (Ireland) Television match official: Olly Hodges (Ireland)

Leinster vs Munster @ RDS Arena Referee: Mike Adamson (Scotland) Assistant referees: Lloyd Linton (Scotland), Keith Allen (Scotland) Television match official: Neil Paterson (Scotland)

Champions Cup qualification play-off 

Ospreys vs Scarlets @ Liberty Stadium Referee: Ben Whitehouse (Wales) Assistant referees: Nigel Owens (Wales), Dan Jones (Wales) Television match official: Ian Davies (Wales)

Premiership

Exeter Chiefs vs Northampton Saints @ Sandy Park Referee: Karl Dickson Assistant referees: Luke Pearce, Gareth Holsgrove Television match official: David Rose

Leicester Tigers vs Bath @ Welford Road Referee: Craig Maxwell-Keys Assistant referees: Ian Tempest, Matthew O’Grady Television match official: Sean Davey

Newcastle Falcons vs Bristol Bears @ Kingston Park Referee: JP Doyle Assistant referees: Hamish Smales, Andrew Jackson Television match official: David Grashoff

Sale Sharks vs Gloucester @ AJ Bell Stadium Referee: Wayne Barnes Assistant referees: Christophe Ridley, Peter Allan Television match official: Keith Lewis

Wasps vs Harlequins @ Ricoh Arena Referee: Matthew Carley Assistant referees: Tom Foley, Greg Macdonald Television match official: Stuart Terheege

Worcester Warriors vs Saracens @ Sixways Referee: Adam Leal Assistant referees: Jack Makepeace, Paul Dix Television match official: Trevor Fisher

Super Rugby

Hurricanes vs Jaguares @ Westpac Stadium Referee: Brendon Pickerill (New Zealand) Assistant referees: Mike Fraser (New Zealand), Paul Williams (New Zealand) Television match official: Aaron Paterson (New Zealand)

Rebels vs Bulls @ AAMI Park Referee: Federico Anselmi (Argentina) Assistant referees: Damon Murphy (Australia), Aaron Pook (Australia) Television match official: Ian Smith (Australia)

Blues vs Chiefs @ Eden Park Referee: Glen Jackson (New Zealand) Assistant referees: Nick Briant (New Zealand), Dan Waenga (New Zealand) Television match official: Glenn Newman (New Zealand)

Reds vs Waratahs @ Suncorp Stadium Referee: Ben O’Keeffe (New Zealand) Assistant referees: Angus Gardner (Australia), Damon Murphy (Australia) Television match official: James Leckie (Australia)

Lions vs Highlanders @ Ellis Park Referee: Rasta Rasivhenge (South Africa) Assistant referees: Jaco Peyper (South Africa), Griffin Colby (South Africa) Television match official: Willie Vos (South Africa)

Stormers vs Crusaders @ Newlands Referee: Nic Berry (Australia) Assistant referees: Marius van der Westhuizen (South Africa), AJ Jacobs (South Africa) Television match official: Marius Jonker (South Africa)

Top 14

Agen vs Castres Olympique @ Stade Armandie Referee: Jérôme Garcès Assistant referees: Julien Castaignède, Jacques De Lemos Television match official: Philippe Bonhoure

Perpignan vs Racing 92 @ Stade Aimé Giral Referee: Laurent Cardona Assistant referees: Flavien Hourquet, Christophe Bats Television match official: Éric Gonthier

Pau vs Grenoble @ Stade du Hameau Referee: Jonathan Dufort Assistant referees: Sébastien Boyer, Christian Coussan Television match official: Akim Hadj-Bachir

Lyon vs La Rochelle @ Matmut Stadium de Gerland Referee: Romain Poite Assistant referees: Adrien Descottes, Laurent Breil Television match official: Denis Grenouillet

Montpellier vs Stade Français @ GGL Stadium Referee: Pascal Gaüzère Assistant referees: Maxime Chalon, Thierry Devais Television match official: Patrick Dellac

Bordeaux-Bègles vs Stade Toulouse @ Stade Chaban-Delmas Referee: Tual Trainini Assistant referees: Laurent Millotte, Bruno Gabaldon Television match official: Éric Gauzins

Toulon vs Clermont @ Stade Mayol Referee: Vincent Blasco-Baqué Assistant referees: Cédric Marchat, Sébastien Hebert Television match official: Mourad Zitouni