Saracens took control of Pool 1 of the European Rugby Champions Cup with an impressive 27-9 win at Ulster on Friday night.
Alun Wyn Jones says Ospreys are confident they can end Clermont Auvergne's formidable home record with a win on Sunday, live on Sky Sports 2 from 12.30pm.
James Haskell returns to skipper Wasps as they host Toulon at the Ricoh Arena in the Champions Cup on Sunday.
Henry Slade will start at fly-half for Exeter when they take on Bordeaux-Bègles on Saturday.
Highly-rated French centre Gael Fickou starts for Toulose in their Pool 1 clash against Oyonnax on Saturday.
Ken Owens makes a return from injury to lead Scarlets at home to Racing 92 in the Champions Cup on Saturday, live on Sky Sports.
Francois Louw will captain Bath when Leinster visit the Recreation Ground in the Champions Cup on Saturday.
Leicester travel to face Treviso in Pool 4 of the European Rugby Champions Cup on Saturday, live on Sky Sports 2 HD from 12.30pm.
Glasgow Warriors host Northampton Saints in Pool 3 of the European Rugby Champions Cup on Saturday evening, live on Sky Sports 5 HD.
Brad Barritt will captain Saracens in his 150th appearance for the club when they take on Ulster on Friday.
Stade Francais have decided to postpone their Champions Cup clash with Munster this weekend.
Wasps director of rugby Dai Young reckons his side were good value for their European Champions Cup win over Leinster.
Exeter will try to maintain their impressive Champions Cup record against Welsh teams when they travel to the Ospreys.
Wasps recorded a 33-6 Champions Cup win over Leinster at the RDS Arena on Sunday afternoon.
Brad Barritt will captain Saracens in Saturday's crunch Champions Cup opener against Toulouse at Allianz Park.
All of this weekend's Champions Cup and Challenge Cup games in France have been postponed due to the tragic events in Paris on Friday night.
Ulster travel to Stade Charles Mathon to take on debutants Oyonnax in their opening Champions Cup Pool One clash.
Leicester opened their Champions Cup campaign with a 33-20 win over French side Stade Francais at Welford Road.
Leinster make nine changes for Sunday's visit of Wasps, with Eoin Reddan named at scrum-half against his former side.
Munster will be seeking maximum points when they host Treviso in Saturday's Champions Cup tie at Thomond Park.