Refs: Magners changes
The snow has forced the cancellation of all but three Magners League matches and to make refereeing travel easier, the referees have been shifted around.
Alain Rolland will no longer cross to Wales but will referee in Ireland while Nigel Owens and James Jones will no longer cross to Ireland but will stay in Wales. Neil Paterson will not try to get out of snowbound Scotland, his place taken by Nigel Owens.
Changed Appointments
Scarlets vs Leinster at Parc y Scarlets
Referee: Nigel Owens (Wales)
Assistant referees: Colin Kirkhouse (Wales), Martyn Lewis (Wales)
Television match official: Hugh Watkins (Wales)
Munster vs Cardiff Blues at Thomond Park
Referee: Alain Rolland (Ireland)
Assistant referees: Peter Haycock (Ireland), John Carvill (Ireland)
Television match official: Brian Fitzgerald (Ireland)
Assessor: Bertie Smith (Ireland)
Ospreys vs Edinburgh at Liberty Stadium
Referee: James Jones (Wales)
Assistant referees: Huw David (Wales), Rhys Thomas (Wales)
Television match official: Tony Rowlands (Wales)
