A 79th-minute try from Harry Mallinder gave Northampton a 19-15 home win over Glasgow in the Champions Cup on Sunday.
A Drew Mitchell try in the last play of the game handed Toulon a 15-11 win over Wasps in the Champions Cup on Sunday.
Racing 92 secured a home quarter-final in the Champions Cup with a 64-14 win over PRO12 side Scarlets on Sunday.
Saracens are through to the quarter-finals of the Champions Cup following a 33-17 win over Ulster at Allianz Park.
The Exeter Chiefs had their Champions Cup quarter-final hopes dented after a 34-27 loss at Bordeaux-Begles on Saturday,
Munster salvaged some pride from their disappointing Champions Cup campaign with a 26-13 win over Stade Francais.
Ospreys have kept their Champions Cup hopes alive with a 21-13 win over Clermont Auvergne at the Liberty Stadium.
Drew Mitchell returns for Toulon for their Champions Cup Pool 5 clash against Wasps at Stade Felix Mayol.
Dylan Hartley returns to the Northampton Saints starting line-up for Sunday's crucial Champions Cup tie with Glasgow.
Dan Carter has been shifted into the midfield for Racing 92's Champions Cup clash with Scarlets on Sky Sports.
Manu Tuilagi will make his first start in 15 months when Leicester Tigers host Benetton Treviso on Saturday night.
Toulouse travel to Top 14 rivals Oyonnax on Saturday as they look to finish their Pool 1 campaign on a high.
Ireland international Jared Payne makes his return from injury in Ulster's Champions Cup clash at Saracens on Saturday.
Munster have made three changes to their starting XV for Saturday's visit of Stade Francais, live on Sky Sports 3 HD.
Exeter head to Bordeaux-Begles knowing that nothing less than a win will keep their European hopes alive.
Nothing less than a victory will do for Bath when they travel to Dublin to face a much-changed Leinster on Saturday.
Knockout rugby comes two rounds early for the Ospreys when they face Clermont Auvergne in Friday's crucial Champions Cup tie.
Three men from Ulster, an experienced midfield duo and two young loose forwards feature in our team of the week.
George Ford kicked two drop goals after an early penalty as Bath were narrowly beaten 12-9 by Toulon.
Paddy Jackson kicked a late penalty as Ulster fought back from 23-0 down to beat Oyonnax 24-23 and keep their European hopes alive.