Leicester Tigers came from behind to beat RC Toulon 25-21 at Welford Road.
Owen Williams kicked 20 points as Toulon missed out on becoming only the fifth team to win 10 European Cup matches in a row. Leicester are now second in Pool 3 just one point behind the French side.
Ulster got their European campaign back on track after beating Scarlets 24-9 to record their first win of the season. The result means that Scarlets have dropped from second to fourth in Pool 3.
Toulouse replaced Glasgow Warriors at the top of Pool 4 after defeating the Scottish side 19-11. The French side are now just one of two teams to have won all three of their opening games.
Bath moved off the bottom of Pool 4 as they replaced Montpellier in third with a 30-5 victory. England’s George Ford kicked 15 points as Bath keep alive their hopes of making the knockout stages.
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ASM Clermont Auvergne also climbed to the top of Pool 1, they replace Munster after beating the Irish team 16-9.Clermont hold a one point lead with Munster and Saracens second and third respectively on nine points.
Last season’s finalists beat Sale Sharks 19-15 to rule the Salford side out of the quarter-finals with three rounds of the group stage left to play.
Harlequins maintained their 100% record in this campaign with a 24-18 win against Leinster. The Quins have opened up a three point gap at the top of Pool 2 while Leinster stay second.
The other game in Pool 2 saw Castres Olympique remain rooted to the bottom of the table after a 32-17 loss against third place Wasps.
Benneton Treviso have been left bottom of Pool 5 without a point after being beaten 38-15 by Northampton Saints who remain second in the group. The Jimmies are level with Racing Metro 92 on 10 points.
The Parisians remain top of Pool 5 despite sharing the points with Ospreys in a 19-19 draw.