Mark McCall,  Saracens director of rugby, celebrates with Sean Maitland after their victory over RC Toulon  at Stade Felix Mayol in Toulon last weekend. Photograph:  David Rogers/Getty Images

Saturday Pool4 Castres Olympique v Northampton Saints, Stade Pierre Antoine (3.15, Sky Sports 2) – England captain and hooker Dylan Hartley, fellow E(...)