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Warriors too strong for Barrow
Richards celebrates contract with try and eight goals
Wigan eased into the fifth round of the Carnegie Challenge Cup with a thumping 52-0 win over minnows Barrow.
The Super League champions were rarely tested in a one-sided affair which saw the Warriors score nine tries against the part-timers.
Michael Maguire's men opened up a 24-0 half-time lead at the DW Stadium and the Raiders could do nothing else but try and repel the constant onslaught.
Pat Richards celebrated his new contract with 20 points, as Sam Tomkins and hooker Thomas Leuluai each added two tries.
Despite the scoreline Barrow did show some resilience but they failed to convert - unlike their hosts who were in devastating form.
Maguire fielded a strong side for the cup tie with the only other addition being 19-year-old Jack Hughes, who made his debut when the second row forward came off the bench.
Wigan started strongly when they forced a drop-out early on and Joel Tomkins and George Carmont went close to scoring.
New Zealander Leuluai was the first to finally break the deadlock when he touched down in the 12th minute.
Defensively the Warriors showed equal prowess to their attacks as they bundled centre Liam Harrison into touch five metres out, as the Raiders attempted to counter.
Brett Finch created a superb bit of space for Andy Coley to race through between the posts as Wigan increased their lead.
Joel Tomkins soon added to the tally after exchanging passes with Josh Charnley for a smart try.
Barrow thought they had pulled one back when Mike Backhouse placed the ball down but 23-year-old Nathan Mossop's pass was adjudged to have been forward.
The Raiders denied Joel Tomkins as he powered forward but then failed to stop Paul Deacon in his tracks, as the 32-year-old came off the bench and weaved his way through for a fourth try.
Richards could have added another try in the last minute of the first-half but his own kick proved to have too much weight behind it.
Wigan started the second-half in the same frame of mind as Sam Tomkins broke from the 30-metre line and beat three players with a curving run which took him under the posts.
The Raiders had a glorious chance to get off the mark when Charnley missed a Jamie Rooney kick and Liam Campbell slid over to claim a try, however he was never in full control.
Wigan's skipper Sean O'Loughlin scored a sixth try for the Warriors when he cleverly tricked the defence with a dummy.
Sam Tomkins, who was in inspired form, then released Leuluai for his second of the match with over 25 minutes still left on the clock.
Richards successfully kicked seven goals and added a try to his tally when he leapt to claim Deacon's teasing kick.
The younger of the Tomkins brothers registered his second of the game when he broke from the line and drove through to bring up the half-century for the home side.
Richards then wrapped up the scoring by kicking over his eighth goal from nine attempts as Barrow could do little else but wish for the game to end.