The fit-again duo of Deon Cross and Lewis Murphy are both back St Helens, while Kyle Feldt misses out after suffering a head knock last week.

There is no Bill Leyland, Wigan’s late tormentor the last time these two sides met, as he has left Saints after his second short-term loan spell to return to Hull KR.

Meanwhile, Jake Davies who made an impact off the bench for Saints last week misses out as the 18th man.

St Helens: Sailor, Murphy, Cross, Roberton, Dagnall, Welsby, Hastings, Klemmer, Clark, Lees (capt), Whitley, Wright, Shorrocks.

Interchanges: Lomax, Walmsley, Delaney, Stephens.

Jon Wilkin
Former St Helens forward on BBC One

"I came here thinking Saints all the way, glorious form, five wins [in a row], buoyant attitude despite adversity.

"But you get here and you know Matt Peet's Wigan team, how ever they are going to line-up, are going to be fantastic."

It’s not long now until kick-off, so while we have a minute why not give us your early predictions?

Will the Saints march on to the final, or will Wigan prevail to reach their third Wembley decider in five years?

It's easier than ever to get involved, just hit the yellow get involved button on this page.

St Helens boss Paul Rowley knows this semi-final has the ingredients to cook up another thriller, but he has done his best to keep things grounded.

"We're just preparing like we would any other game and that is a fact," Rowley told BBC Sport.

"The really exciting story is that it's the Saints v Wigan derby, it's the Challenge Cup semi-final, there are lots of different ingredients that make it as big a game as you could possibly have.

"We understand what it means to the towns and to our supporters, and we're embracing it as well."

And it's fair to say that defeat by Saints has been at the front of everyone's mind at Wigan in the lead up to this semi-final showdown.

Surrendering a 14-point second-half lead to lose by 10 points will do that!

"You've got to reflect on it, I mean obviously we did a little bit of reflecting out of the review process of that game," Matt Peet told BBC Radio Manchester.

"Some of that still stands and it's something we'll talk about again this week, but it's not just the last 10 minutes, it's lessons learned from the whole game."

Since that defeat by St Helens, Wigan have lost two out of four matches in all competitions - with one of the wins in that period coming in their thrilling Challenge Cup win at Wakefield last month.

"You can probably look at the last 10 minutes of why that happened and ways of changing momentum," Wigan half-back Harry Smith told BBC Radio Manchester.

"When we don't have momentum how do we win it back quicker and be more effective in that aspect? We can definitely take some lessons from that game and the past three games as well."

It is the second meeting of these famous old rivals already this season.

The first earned itself a place among the derby day classics.

Saints loanee Bill Leyland scored a dramatic late pair of tries as they fought back to beat Matt Peet's side 34-24 on Good Friday.

Fancy reliving it? You can catch the highlights above.

St Helens cruised past French club Catalans Dragons to set up this tie.

Australian full-back Tristan Sailor scored 14 points in Saints' 36-4 quarter-final win. They started their cup campaign with a 98-2 demolition of Championship side Workington Town.

Meanwhile, Wigan Warriors squeezed past Wakefield Trinity with a 26-22 win in last-eight tie after thumping second-tier outfit Rochdale Hornets 83-0 in the third round back in February.

BBC One

Alongside today’s live text updates, you can follow every tackle and try with TV coverage and radio commentary of the match being streamed at the top of this page.

Head to the tab above and choose from BBC One’s coverage, which is also available on BBC iPlayer. You also have the choice of BBC Radio Merseyside, BBC Radio Manchester and BBC 5 Live Sports Extra commentaries from the Halliwell Jones Stadium.

A very warm, cup derby day welcome to one and all.

St Helens are up against Wigan Warriors in what promises to be a barnstorming first men’s Challenge Cup semi-final of the weekend.

Stay with us here for the next few hours to follow the drama as it unfolds.

Image source, Getty Images

It’s a rivalry as old as rugby league…

St Helens versus Wigan.

Image source, Getty Images

For more than 130 years the near neighbours have battled one another and often competed for the biggest prizes in the British game.

Today, they play for a place at Wembley and right to try claim the grandest of rugby league trophy of all - the Challenge Cup.