Left wing Matt Banahan crossed for two tries, his first of the season in the Aviva Premiership, as Bath beat bottom club London Irish 25-17 to also claim a first bonus-point win at home.
After winning only one of their previous 11 league encounters against Bath, Exeter boss Rob Baxter was delighted to see the Chiefs overcome their bogey team 26-17 at Sandy Park.
Former Wales international James Hook kicked five penalties as Gloucester fought back in abhorrent conditions to stun Bath 15-11 and leap to fifth place in the Aviva Premiership table - if only for 24 hours.
A Maro Itoje inspired Saracens comeback ensured the reigning Aviva Premiership champions preserved their unbeaten record at Allianz Park this season with a 19-13 win over Bath.