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.
Lyon scored all five tries in the second half in a rout of Stade Francais, while Racing 92 claimed their fourth consecutive win.
Clermont still lead the way in Top 14, but Stade Francais remain on their heels after a late win over Montpellier.
Felix Lambey and Yoann Huget have been called up to the France squad as replacements for injured duo Bernard Le Roux and Wesley Fofana.
Wasps, without Christian Wade, battled back to draw with Bath, and Edinburgh battered Toulon in Saturday's European Champions Cup action.
Freddie Burns apologised after costing Bath a Champions Cup win over Toulouse with a botched try five minutes from time.
Clermont's advantage at the summit of the Top 14 table was reduced to four points after they were beaten at La Rochelle.
Stade Francais could not continue their strong start to the season on Sunday as rivals Racing 92 triumphed in Paris.
Clermont Auvergne remain top of the table, but they suffered a first defeat of the Top 14 campaign at the hands of Bordeaux.