BBC Sport - Rugby Union

• Ospreys make champions Saracens work hard for victory
  Saracens edge out a stubborn Ospreys side to maintain their 100% start to their Champions Cup defence at Allianz Park.
• Leicester score seven tries to ease past Castres
  Leicester get their Champions Cup campaign back on track with a dazzling seven-try win over Castres.
• Four-try Leinster win at Glasgow in Champions Cup
  Cian Healy scores two tries as Leinster inflict a second successive European Champions Cup defeat on Glasgow Warriors.
• Northampton face tough task after Clermont loss
  Northampton face an uphill struggle to make the last eight after Clermont inflicted their second straight Champions Cup defeat.