Heineken Cup Quarterfinals
Saturday, 7 April
Edinburgh Rugby vs Toulouse at Murrayfield
Referee: Nigel Owens Wales)
Assistant referees: Andrew Small (England), Stuart Terheege (England)
Leinster Rugby vs Cardiff Blues at Aviva Stadium, Dublin
Referee: Dave Pearson (England)
Assistant referees: Pascal Gauzere (France), David Changleng (Scotland)
Sunday, 8 April
Munster Rugby vs Ulster Rugby at Thomond Park
Referee: Romain Poite (France)
Assistant referees: Jérôme Garces (France), Matthieu Raynal (France)
Saracens vs Clermont Auvergne at Vicarage Road
Referee: Alain Rolland (Ireland)
Assistant referees: Neil Paterson (Scotland), Simon McDowell (Ireland)
Amlin Challenge Cup Quarterfinals
Thursday, 5 April
Stade Français Paris vs Exeter Chiefs at Stade Charlety
Referee: Peter Fitzgibbon (Ireland)
Assistant referee James Jones Wales), David Wilkinson (Ireland)
Friday, 6 April
Toulon vs Harlequins at Stade Félix Mayol
Referee: George Clancy (Ireland)
Assistant referees: Dudley Phillips (Ireland), Carlo Damasco (Italy)
Saturday, 7 April
London Wasps vs Biarritz Olympique at Adams Park
Referee: John Lacey (Ireland)
Assistant referees: Peter Allan (Scotland), Leo Colgan (Ireland)
Sunday, 8 April
Brive vs Scarlets at Stadium Amédée Domenech
Referee: Wayne Barnes (England)
Assistant referees: Greg Garner (England), Paul Dix (England)