Match officials to May 10
One midweek Magners League fixture precedes England's knockout games this weekend, with referees and other officials given their respective assignments.
One midweek Magners League fixture precedes England's knockout games this weekend, with referees and other officials given their respective assignments.
Meanwhile, the southern hemisphere's elite are pretty much at the win-or-bust stage as the Super 14 play-off race gathers serious pace.
Magners League
Cardiff Blues v Munster at Arms Park
Referee: Peter Allen (Scotland)
Touch judges: Gwyn Morris (Wales), Leighton Hodges (Wales)
Television match official: Neil Ballard (Wales)
Assessor: Les Peard (Wales)
Connacht v Ulster
Referee: Alan Lewis (Ireland)
Touch judges: Leo Colgan (Ireland), Peter Roche (Ireland)
Leinster v Scarlets
Referee: Neil Paterson (Scotland)
Touch judges: David Wilkinson (Ireland), Jonathan Peake (Ireland)
Television match official: John Carvill (Ireland)
Assessor: Tim Aplin (Ireland)
Edinburgh v Dragons
Referee: Dudley Phillips (Ireland)
Touch judges: Iain Heard (Scotland), Graham Allen (Scotland)
Ospreys v Glasgow
Referee: George Clancy (Ireland)
Touch judges: Nigel Whitehouse (Wales), Greg Morgan (Wales)
Television match official: Derek Bevan (Wales)
Assessor: Clayton Thomas (Wales)
Blues v Dragons at Arms Park
Referee: Nigel Owens (Wales)
Touch judges: Tim Hayes (Wales), Huw Griffiths (Wales)
Television match official: Hugh Watkins (Wales)
Super 14, Round 13
Crusaders v Reds in Christchurch
Referee: Chris Pollock (News Zealand)
Touch judges: Keith Brown (News Zealand), Kane McBride (News Zealand)
Television match official: James McPhail (News Zealand)
Assessor: Glen Wahlstrom (News Zealand)
Lions v Highlanders in Johannesburg
Referee: Jaco Peyper (South Africa)
Touch judges: Craig Joubert (South Africa), Cobus Wessels (South Africa)
Television match official: Shaun Veldsman (South Africa)
Assessor: Arrie Schoonwinkel (South Africa)
Chiefs v Hurricanes in Hamilton
Referee: Bryce Lawrence (News Zealand)
Touch judges: Vinny Munro (News Zealand), Glenn Newman (News Zealand)
Television match official: Shane McDermott (News Zealand)
Assessor: Glen Wahlstrom (News Zealand)
Brumbies v Blues in Canberra
Referee: Matt Goddard (Australia)
Touch judges: Ian Smith (Australia), Brett Bowden (Australia)
Television match official: George Ayoub (Australia)
Assessor: Wayne Erickson (Australia)
Sharks v Waratahs in Durban
Referee: Mark Lawrence (South Africa)
Touch judges: Joey Salmans (South Africa), Stuart Berry (South Africa)
Television match official: Shaun Veldsman (South Africa)
Assessor: Wayne Erickson (Australia)
Bulls v Cheetahs in Pretoria
Referee: Stuart Dickinson (Australia)
Touch judges: Jonathan Kaplan (South Africa), Daniel Cheever (Australia)
Television match official: Johann Meuwesen (South Africa)
Assessor: Arrie Schoonwinkel (South Africa)
Stormers v Western Force at Newlands
Referee: Marius Jonker (South Africa)
Touch judges: Willie Roos (South Africa), Christie du Preez (South Africa)
Television match official: Michael Cupido (South Africa)
Assessor: Wayne Erickson (Australia)
England
Guinness Premiership semi-finals
Leicester Tigers v Bath
Referee: Dave Pearson
Touch judges: Wayne Barnes, Stuart Terheege.
Television match official: David Matthews
Harlequins v London Irish
Referee: Chris White
Touch judges: Roy Maybank, Paul Dix
Television match official: Graham Hughes
France
Top 14, Round 25
Dax v Toulon
Brive v Montpellier
Bourgoin v Castres
Clermont v Mont-de-Marsan
Perpignan v Montauban
Bayonne v Toulouse
Stade FranĆĀ§ais v Biarritz