Wasps racked up their biggest victory in Europe to kick-off their Amlin Challenge Cup campaign in some style.

It was 16 years since Wasps scored 77 points against Toulouse but that tally always looked set to be toppled as they ran riot at Stadio Pierluigi Zaffanella.

Wasps showed their ruthless streak with a staggering 14 tries in their opening game of Pool 4 that included hat-tricks for both William Helu and Guy Thompson.

Joe Carlisle converted 10 as Wasps tore up the club's record books.

Wasps led 56-3 at half-time as Helu kicked off the rout in the 10th minute after Viadana's Daniel Yakopo was sin binned.

Wasps' scrum then claimed a penalty try followed by a Kearnan Myall effort three minutes later.

Thompson claimed his first on 23 minutes and Thomas Bell followed before Helu crossed twice in the space of three minutes.

Simon McIntyre claimed Wasps' eighth of the half while Viadana, last year's Italian league champions, mustered a response through Andrea Barbieri before half-time.

Flanker Thompson then completed his hat-trick just seven minutes into the second half, while a brace of tries by Jack Winter-Moates saw Wasps surpass that previous highest tally in Europe from back in 1997.

Charlie Hayter and Joe Simpson then completed an historic win after Anthony Fenner grabbed a second score for the hosts.