Ulster produced the bonus-point victory they needed from their final European Champions Cup pool game against Oyonnax.
Saracens maintained their 100 per cent record in this season's Champions Cup despite a second-half howler from Owen Farrell.
Tom Wood is relishing Saturday's Champions Cup fixture at Scarlets and insists Northampton can still make the quarter-finals.
Saracens travel to Toulouse aiming to further their unbeaten Champions Cup run and become top seeds for the quarter-finals.
Steve Tandy has praised his Ospreys side for the work put in to top their Champions Cup pool with one round remaining, ahead of Sunday's clash at Exeter (3.15pm).
Wasps welcome James Haskell and Joe Launchbury back from injury for Saturday's must-win Champions Cup tie at home to Leinster (3.15pm).
Ulster are without Ruan Pienaar and Stuart McCloskey for Saturday's vital Champions Cup tie with Oyonnax.
Dan Cole will make his 150th Leicester appearance in Sunday's Champions Cup trip to Stade Francais (1pm).
Pool 3 winners Racing 92 have rested some of their big guns, including Dan Carter, for Saturday's trip to Glasgow.
Bath make seven changes to their starting line-up for Saturday's visit of Champions Cup holders Toulon (3.15pm).
Saracens and Northampton feature among the five European Champions Cup games live on Sky Sports this weekend.
Glasgow's Ryan Wilson has avoided a ban after he was accused of grabbing the testicles of Northampton's Lee Dickson
Who needs what to progress to the quarter-finals of the Champions Cup.
Clermont Auvergne star Viktor Kolelishvili has been suspended for 14 weeks for pushing match referee Wayne Barnes.
Glasgow's Ryan Wilson has been cited after being "alleged to have grabbed the testicles" of Northampton scrum-half Lee Dickson.
Chris Ashton could be banned for England's Six Nations campaign after being cited after Saracens' game against Ulster.
Will Greenwood reviews the weekend's European action and gives his Champions Cup quarter-final predictions.
Will Greenwood picks his favourite moments, including Alun Wyn Jones asking for his opponent not to get a yellow card.
Racing 92, Saracens and the Ospreys are well represented in our team of the week following impressive Champions Cup wins.
Stuart Barnes salutes Champions Cup contenders Saracens and Racing 92 and pays tribute to Ospreys forwards young and old.