Rob Baxter's Exeter Chiefs survived a late scare to defeat Sale Sharks and remain firmly on track for the Champions Cup quarter-finals.
There were seven tries in Leinster's 43-16 European Champions Cup win over Northampton Saints as they made it 10 victories from 10.
Bath were no match for a classy Clermonth Auvergne in Friday's European Rugby Champions Cup clash.
Toulouse have hit form and made light work of Bayonne at home, while Brive defeated Stade Francais.
London Irish battled to claim a draw at Bristol Bears despite seeing Ollie Hoskins sent off on the stroke of half-time.
Lyon's lead at the Top 14 summit was reduced to just one point as they were comprehensively beaten 33-8 by Montpellier on Saturday.
Having beaten Glasgow Warriors in the Pro14 final in May, Leinster were victorious again at Scotstoun as Cian Kelleher scored a brace.
Northampton Saints made it four wins from five to go top of the Premiership, while Exeter Chiefs thrashed Wasps.
Wayne Pivac was victorious in his first match as Wales coach, Josh Adams and Ken Owens scoring braces against Warren Gatland's Barbarians.
In their first Premiership match since accepting a 35-point deduction for breaching salary-cap rules, Saracens defeated Bath 25-12.
Eroni Sau's try proved decisive as Edinburgh saw off Pro14 Group B leaders Munster, while Ulster thrashed Scarlets on Friday.
Sale Sharks saw off a La Rochelle side who were let down by Pierre Bourgarit, as the English team sealed a first European win...
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Ospreys were no match for Saracens on Saturday, while Exeter Chiefs were among the other European Champions Cup winners.
Ulster made it two wins from two in this season's European Champions Cup by overcoming Pool 3 rivals Clermont Auvergne.
Racing 92, Northampton Saints and Connacht were all winners in Sunday's European Rugby Champions Cup action.
Ireland centre Garry Ringrose was the star of the show as Leinster started their bid to regain the Champions Cup with a bonus-point win.