MATTY Ashton says Warrington Wolves must be "relentless" in their Challenge Cup clash with former club Swinton Lions on Sunday, kick off 12.30pm.

The third round of this year's truncated competition sees The Wire travel to Heywood Road to face Championship opposition in the form of Stuart Littler's Lions, who have beaten Newcastle Thunder and Oldham to reach this stage.

It is a game Steve Price's side will be expected to win comfortably but Ashton, whose stellar 2019 season in a Swinton shirt saw him earn his move to The Halliwell Jones Stadium, has warned against complacency.

"They will be giving it their all as they have nothing to lose," he said.

"We have to be relentless and treat it as if we were playing a Super League game if we want to get the job done.

"You have to go into these games with that kind of mentality. Stranger things have happened and on their day, any team can turn you over.

"We have to be relentless in everything we do and don’t take them lightly as they will be raring to go.

"They may be a league below us but they still have a lot of quality players in their team."

The sides' last meeting came in a friendly last year, with Swinton running out 16-12 winners over a second-string Wire side at Heywood Road.

Most of Ashton's teammates will not have played at the former home of the Sale Sharks rugby union team, so the 22-year-old gave them a clue about what to expect.

"It’s a very tight stadium – it would be much better with fans in as they would be so close to the pitch," he said.

" It’s a very big pitch, though.

"On it’s day it’s a really nice one but during winter it can be a bit of a mudbath."