Changing of the guard as a lot of the newer/younger refs get games
Round 3
Saints v Leinster - A Ruiz
Toulon v Scarlets - M Carley
Ulster v Gloucester - P Gauzerre
Lyon v Glasgow - C Ridley
Exeter v Toulouse - F Murphy
Munster v Clermont - L Pearce
Edinburgh v Sale - M Raynal
Montpellier v Wasps - M Adamson
Bath v La Rochelle - B Whitehouse
Dragons v Bordeaux - K Dickson
Racing v Harlequins - N Amashukeli
Bristol v Connacht - R Poite
Round 4
Leinster v Montpellier - C Ridley
Sale v Toulon - D Jones
Scarlets v Bath - P Gauzerre
Bordeaux v Northampton - B Whitehouse
Clermont v Bristol - F Murphy
La Rochelle v Edinburgh - K Dickson
Harlequins v Munster - M Raynal
Wasps v Dragons - P Brousset
Connacht v Racing - L Pearce
Gloucester v Lyon - A Brace
Toulouse v Ulster - W Barnes
Glasgow v Exeter - R Poite