A round-up of Saturday's Investec Champions Cup action, where Northampton and Saracens made winning starts but Exeter were beaten by Sharks in South Africa.
Six-try Bath powered their way to a bonus-point victory over Sale Sharks to round off the first block of Gallagher Premiership matches in style.
Alex Lozowski booted a penalty with the game's final kick as Saracens claimed a thrilling 37-35 Gallagher Premiership victory over Bristol at Ashton Gate.
Harlequins ended Saracens' 100 per cent record in this season's Gallagher Premiership by defeating their London rivals 17-10.
England back row Ben Earl scored two tries as Saracens made it three wins from three in the Premiership this season with a 29-14 victory over Exeter.
Saracens head of performance Phil Morrow has been blocked from joining the England set-up by Gallagher Premiership clubs.
Leigh Halfpenny celebrated a first Gallagher Premiership try as Harlequins picked up a 28-14 bonus-point victory over Newcastle at Twickenham Stoop.
Michael Cheika's reign as Leicester head coach began in dramatic winning fashion as the Tigers claimed a 17-14 Gallagher Premiership victory at Sandy Park.