Maxime Medard's late try proved crucial as Toulouse beat European Champions Cup holders Leinster on Sunday.
Reece Hodge's season is over after the versatile 24-year-old fractured his ankle in an Australia training session.
Connacht had no answer to Chris Ashton, who enjoyed a hat-trick on his competitive debut for Sale Sharks.
Wasps, without Christian Wade, battled back to draw with Bath, and Edinburgh battered Toulon in Saturday's European Champions Cup action.
Christian Wade has been heavily linked with a career switch to the NFL, but Wasps boss Dai Young insists for now it is mere speculation.
Gloucester could be set for a prolonged spell without Danny Cipriani, who was shown a red card for a high shot on Munster's Rory Scannell.
Having been beaten 82-21 by La Rochelle six days earlier, Enisei were once again outplayed by the French club.
The 71st European tie hosted at Welford Road ended in a 45-27 win for Leicester Tigers over the Scarlets in the European Champions Cup.
All Black’s colossus Brodie Retallick says he is ready and eager to take on the Wallabies a week from tomorrow, following his return from a shoulder...
Wasps have not made any comment on reports that Christian Wade, who will not play against Bath, is set for a sensational move to the NFL.