Wasps fly into play-offs
Toulon's failure to pick up maximum points against Bath allowed Wasps to take advantage with a devastating second half performance against the Irish province.
Dai Young's men scored seven tries to inflict the heaviest defeat in Europe for three-time winners Leinster, who will be desperate to forget their dismal campaign.
They did ask some early questions of Wasps but the Premiership side answered them all with an impressive second-half performance at the Ricoh Arena.
Leinster had hit the home side with a try after just two minutes when a good break from Noel Reid ended with Zane Kirchner going over in the corner.
But their lead lasted less than 10 minutes when former Leinster flyhalf Jimmy Gopperth went through a big gap in the visitor's defence to draw the home side level.
Five minutes later Wasps crossed for their second score when George Smith stole the ball from a maul and fed Dan Robson, who tiptoed down the sideline and put Launchbury over.
A yellow card for prop Lorenzo Cittadini for kicking the ball away from a ruck didn't do Wasps any favours and within a minute Eoin Reddan had crossed for Leinster's second.
Gopperth added his first penalty before the interval to give the home side a five-point lead at the break.
The second half was all about Wasps as an early penalty from Gopperth and then a stunning solo effort from Eliot Daly quickly put them in command.
A penalty try on 53 minutes wrapped-up the bonus point by Dai Young's side were in no mood to take their foot off the gas.
Frank 'The Tank' Halai got their fifth of the afternoon with a simple finish in the corner after the Leinster defence had been pulled all over the field.
With nine minutes remaining a misunderstanding in the Leinster backline allowed Charles Piutau to scoop up the loose ball and race under the posts from 40 metres.
Ashley Johnson then got number seven with the final play of the match.
The scorers:
For Wasps:
Tries: Gopperth, Launchbury, Daly, Penalty try, Halai, Piutau, Johnson
Cons: Gopperth 4, Jackson
Pens: Gopperth 2
For Leinster:
Tries: Kirchner, Reddan
Yellow card: Lorenzo Cittadini (Wasps, 29 – professional foul)
Teams:
Wasps: 15 Charles Piutau, 14 Josh Bassett, 13 Elliot Daly, 12 Brendan Macken, 11 Frank Halai, 10 Jimmy Gopperth, 9 Joe Simpson 8 Sam Jones, 7 George Smith, 6 James Haskell (captain), 5 Bradley Davies, 4 Joe Launchbury, 3 Lorenzo Cittadini, 2 Edd Shervington, 1 Matt Mullan.
Replacements: 16 Ashley Johnson, 17 Tom Bristow, 18 Jake Cooper-Woolley, 19 James Gaskell, 20 Nathan Hughes, 21 Dan Robson, 22 Ruaridh Jackson, 23 Rob Miller.
Leinster: 15 Rob Kearney, 14 Zane Kirchner, 13 Luke Fitzgerald, 12 Noel Reid, 11 Dave Kearney, 10 Johnny Sexton (captain), 9 Eoin Reddan, 8 Jamie Heaslip, 7 Jordi Murphy, 6 Dominic Ryan, 5 Rhys Ruddock, 4 Devin Toner, 3 Martin Moore, 2 Sean Cronin, 1 Jack McGrath.
Replacements: 16 Richardt Strauss, 17 Peter Dooley, 18 Michael Bent, 19 Ross Molony, 20 Josh Van Der Flier, 21 Isaac Boss, 22 Cathal Marsh, 23 Ben Te'o.
Referee: Mathieu Raynal (France)
Assistant referees: Sébastien Minery (France), Thomas Déjean (France)
TMO: Eric Gauzins (France)
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