The battle between top and bottom in the Top 14 table stayed true to form, Clermont running out comfortable winners on the road.
The top two in the Top 14 table could not be separated as Clermont Auvergne and Toulouse shared a thrilling draw.
Saracens battled past Cardiff Blues to stay top of Pool 3, while Toulouse came out on top in an entertaining clash with Wasps.
Premiership leaders Saracens made it three wins from three in the European Champions Cup after victory over Cardiff Blues on Sunday.
Montpellier's late rally did not deny Top 14 leaders Clermont Auvergne a 28-23 victory, while Guilhem Guirado scored a try in Toulon's win.
There was a dramatic win for Racing 92 in Top 14, as Toulouse went top but only after a battle at Pau.
Clermont Auvergne could only draw with lowly Grenoble and Toulouse took advantage by putting Bordeaux-Begles to the sword in the Top 14.
Clermont still lead the way in Top 14, but Stade Francais remain on their heels after a late win over Montpellier.
Gloucester fly-half Danny Cipriani has discovered his punishment for the red card he received against Munster last weekend.
Wasps, without Christian Wade, battled back to draw with Bath, and Edinburgh battered Toulon in Saturday's European Champions Cup action.
Newcastle Falcons' return to Europe's elite club competition was worth the wait as they beat stunning Toulon at Stade Mayol.
Julien Arias registered the only try of the game while Jules Plisson kicked nine points as Stade Francais won at Castres on Sunday.
Top 14 leaders Clermont Auvergne put some daylight between themselves and second-place Stade Francais on Saturday.
Clermont Auvergne remain top of the table, but they suffered a first defeat of the Top 14 campaign at the hands of Bordeaux.
France captain Mathieu Bastareaud must serve a five-week punishment for striking Castres forward Christophe Samson in a Top 14 game.
Greig Laidlaw kept his cool to maintain Clermont Auvergne's perfect start to the new Top 14 season.