Fly-half Mark van Gisbergen's six penalties secured Wasps' 18-16 victory over Bath in a lacklustre LV=Cup match at Adams Park.
The New Zealander, who normally plays full-back, saw his opening second-minute attempt rebound from the post but kicked immaculately from then on to land the next six in his side's first victory in this season's competition.
Bath, punished by referee Martin Fox for an array of misdemeanours at the breakdown, replied with three penalties from fly-half Sam Vesty before No 8 Ben Skirving grabbed a late consolation try, converted by Vesty.
Bath had a final chance to snatch victory with the last kick of the match, but full-back Jack Cuthbert's wide-angle penalty from just inside the Wasps half drifted tantalisingly a foot wide of the post.
Victory enabled Wasps to bounce back from the 29-6 defeat at Exeter in their opening LV match the previous weekend while Bath failed to capitalise on their opening win over Cardiff Blues