Match officials to January 23
Referees will have their hands full as Heinken Cup and Amlin Challenge Cup teams battle it out for the remaining quarter-final spots.
This weekend sees the last of the pool action in the Heineken Cup and Amlin Challenge Cup, and once again the refs will have their hands full as teams battle it out for the remaining quarter-final spots.
Northampton, Leinster, Toulouse and Toulon are into the Heineken Cup quarter-finals but Pools Four and Five will be decided on the last day!
Sides that can no longer top their pools, could still steal a quarter-final place courtesy of a best runners up spot. Failing that, several teams are still in the running for a last eight place in the Amlin Challenge Cup.
Heineken Cup
Saracens v Clermont Auvergne
Referee: Alan Lewis (Ireland)
Assistant referees: Simon McDowell (Ireland), Richard Kerr (Ireland)
Television match official: Peter Ferguson (Ireland)
Racing-Métro v Leinster
Referee: Andrew Small (England)
Assistant referees: Chris White (England), Stuart Terheege (England)
Television match official: Graham Hughes
Aironi v Ulster
Referee: Christophe Berdos (France)
Assistant referees: Jean-Luc Rebollal (France), Sébastien Minery (France)
Biarritz v Bath
Referee: George Clancy (Ireland)
Assistant referees: David Wilkinson (Ireland), Kevin Beggs (Ireland)
Television match official: Sean Flannery (Ireland)
Munster v London Irish
Referee: Nigel Owens (Wales)
Assistant referees: Gwyn Morris (Wales), Jonathan Mason (Wales)
Ospreys v Toulon
Referee: Wayne Barnes (England)
Assistant referees: Rob Debney (England), Robin Goodliffe (England)
Television match official: David Matthews (England)
Assessor: Bertie Smith (Ireland)
Edinburgh v Cardiff Blues
Referee: Pascal Gauzere (France)
Assistant referees: Patrick Pechambert (France), Jean-Pierre Matheu (France)
Assessor: Steve Lander (England)
Castres v Northampton Saints
Referee: Peter Fitzgibbon (Ireland)
Assistant referees: Michael Black (Ireland), David Keane (Ireland)
Leicester Tigers v Benetton Treviso
Referee: Romain Poite (France)
Assistant referees: Mathieu Raynal (France), Céderic Marchat (France)
Perpignan v Scarlets
Referee: Dave Pearson (England)
Assistant referees: David Rose (England), Paul Dix (England)
London Wasps v Toulouse
Referee: Alain Rolland (Ireland)
Assistant referees: Leo Colgan (Ireland), Mark Hermin (Ireland)
Television match official: Marshall Kilgore (Ireland)
Dragons v Glasgow Warriors
Referee: Greg Garner (England)
Assistant referees: Tim Wigglesworth (England), Llyr Apgeraint-Roberts (England)
Amlin Challenge Cup
Gloucester v Agen
Referee: Peter Allan (Scotland)
Assistant referees: Iain Heard (Scotland), Rob Dickson (Scotland)
Television match official: Iain Ramage (Scotland)
La Rochelle v Femi-Cz Rovigo
Referee: Tim Hayes (Wales)
Assistant referees: Wayne Davies (Wales), Jason Griffiths (Wales)
Cetransa El Salvador v Sale Sharks
Referee: Stefano Pennè (Italy)
Assistant referees: Giulio de Santis (Italy), Stefano Roscini (Italy)
Petrarca Padova v Brive
Referee: Andrew Macpherson (Scotland)
Assistant referees: Andrew McMenemy (Scotland), Bob Nevins (Scotland)
Connacht v I Cavalieri Estra
Referee: Laurent Cardona (France)
Assistant referees: Eric Gauzins (France), Arnauld Blondel (France)
Harlequins v Bayonne
Referee: James Jones (Wales)
Assistant referees: Hugh Watkins (Wales), Simon Harris (Wales)
Television match official: Brian Stirling (Ireland)
Bourgoin v Newcastle Falcons
Referee: Neil Paterson (Scotland)
Assistant referees: Graham Knox (Scotland), Graeme Marshall (Scotland)
Montpellier v Exeter Chiefs
Referee: Dudley Phillips (Ireland)
Assistant referees: Paul Haycock (Ireland), Brian MacNiece (Ireland)
Leeds Carnegie v Bucharest Oaks
Referee: Carlo Damasco (Italy)
Assistant referees: Mauro Dordolo (Italy), Domenico Sironi (Italy)
Crociati v Stade Français
Referee: Leighton Hodges (Wales)
Assistant referees: Phil Fear (Wales), Gareth Butler (Wales)