Wasps, who trailed by only a point at half time, fell apart in the second half
and slumped to a record defeat at Bristol.
The London club stay bottom of the Zurich Premiership table after this fifth
straight defeat.
Shane Drahm gave Bristol a 6-0 lead with two penalties before Kenny Logan got
Nigel Melville's team on the scoreboard.
Joe Worsley then crossed for a try that gave Wasps the lead - but it did not
last long as Drahm's drop goal just before the break gave Bristol a 9-8
half-time lead.
Fraser Waters gave Wasps hope less than a minute after the resumption when he
scored a converted try.
But a penalty try a couple of minutes later undid the good work from the
visitors and another penalty from Drahm on 46 minutes gave the home side some
breathing space.
Substitute winger Luke Nabaro sealed an impressive return from injury with the
side's third try.
Felipe Contepomi sealed Wasps' fate, as well as a bonus point for the home
side, as he scored late converted tries on 68 and 78 minutes as well as a
penalty.
Former All Black prop drove over in injury-time for a consolation try for
Wasps but it was too little too late for the Londoners.
Despite conceding more points at home than any other Premiership team - 105 -
the West Country side move up to fifth with this win, their third of the
season.
Bristol:
Carrington, Rees, Contepomi, Little, Christophers,
Drahm, Pichot, Johnstone, McCarthy, Crompton, Archer, A. Brown,
Salter, Vander, Sturnham.
Replacements: Higgins for Little (80), Nabaro for Drahm (49),
Sheridan for Archer (73), Short for Salter (78).
Not Used: Nelson, Payne, Blake.
Tries: Nabaro, Contepomi 2.
Cons: Drahm, Contepomi 3.
Pens: Drahm 3, Contepomi.
Drop Goals: Drahm.
Sin Bin: McCarthy (67).
Wasps:
Roiser, Logan, Waters, Denney, Sampson, A. King, Wood,
W. Green, Leota, Dowd, Beardshaw, Jones, Jenkins, Lock, Worsley.
Replacements: Leek for A. King (75), Friday for Wood (64),
Allen for Lock (73).
Not Used: Roberts, Barratt, S. Green, Mackenzie.
Tries: Worsley, Waters, Dowd.
Cons: Logan, Leek.
Pens: Logan.
Att: 4,447
Ref: Tony Spreadbury (RFU).