Ash Handley goes over as Leeds break out of nowhere.

Chris Kendall says no try and sends it to video ref Ben Thaler who, studying every possible angle, can't actually see if the ball is grounded and is forced to go with Kendall's initial call.

No sooner does play restart do Leeds win another set of six in a dangerous area.

Tommy Leuluai sends a kick towards the try-line as Wigan make a rare break upfield but his kick hits the post and cannons in to touch.

It's still not going their way and they've not looked likely to work into Leeds' half for a while.

Robert Lui sends a dangerous grubber kick into Wigan's in-goal area and puts them under a fair bit of pressure.

Leeds' assured performance continues. They're content to keep their superior position in this game rather than scoring for the sake of it.

Joe Shorrocks spills the ball after a promising spell of play from Wigan which almost sees them cross the line for a first try of the game.

Symbolic of their performance today, that.

If you're just joining us, this was the catalyst for a dominant first half for Leeds as Rhyse Martin converted his own try to send them 8-0 up against Wigan.

So far, Wigan are showing little in response to the display that saw Leeds take a 20-point lead at the break.

This has been a special performance from Leeds. In this second half they've looked happy to sit back and let Wigan control the possession.

In their first realistic offensive move of the half, Konrad Hurrell crosses over but video referee Ben Thaler judges Luke Gale was offside in the build-up.

Surely that would have been game over if that try was cleared.

This is still not going Wigan's way despite having the better half of the field in this second period.

Leeds are making it hard work for their opponents to make any sort of significant ground.

This is a special defensive display from the Rhinos.

Image source, Getty Images

Dave Woods
BBC Rugby League correspondent

"It is a day where nothing is sticking for Wigan. They thought they had a try and it would have been a cracker."

Finally Wigan touch down through Dom Manfredi but referee Chris Kendall, despite giving a try, sends it to video referee Ben Thaler.

In the build up it would appear that Tommy Leuluai spills the ball and knocks on before it's handed off to Manfredi.

That's a shame as Wigan looked in decent shape for once.

It's been a while since I've seen Leeds look some comfortable and assured.

Shades of the 2017 Grand Final, today.

Image source, swpix.com

Jackson Hastings works a kick across field just before the turnover as Wigan valiantly try to get off the mark.

Bevan French eventually works onto it and tries to kick and chase but kicks straight back to Leeds who make a break of their own.

Dan: 20-0 up at half time and I'm still incredibly nervous. We never do it the easy way. C'mon Rhinos.

Brian Noble
Ex-Great Britain coach on BBC One

"First you have to think, are you going to get 22 points? I think Adrian Lam will be confident of that because they have points in them.

"The challenge is they have to improve massively. They have to kick the ball better than they have been doing and have still got to defend their own line in relation o making a comeback.

Wigan need to have a cracker in the first five minutes of this second half if they are to have any chance of getting back into this game.

In the first half we saw Leeds play the conditions - and wind - perfectly but can Wigan do the same as they attack the same half of the field?

We are back under way in the second half of this Challenge Cup semi-final.

Wigan came out first. Penny for the thoughts of Adrian Lam right now.

They've got their work cut out if they are to overturn Leeds' 20-point advantage.

Image source, swpix.com

Jon Wilkin
Ex-St Helens captain on BBC One

"Field position and possession are crucial when it is weather like this.

"I actually thought we saw Wigan cope with some good defence, but ultimately Leeds were so dominant there.

"It is all built on this impeccable kicking game and control from Luke Gale and Robert Lui."

Even wondered what success smells like?

Well, Leeds assistant and former player Jamie Jones-Buchanan gave viewers a little sniff of the truth before kick-off...

Dom: Brilliant performance from Leeds so far. Dominated Wigan and playing the conditions superbly.

Maarten: Leeds bringing Wigan to the grinder..... Will they recover?

Richard: Leeds walking this. Long way for Wigan to come back.

A dominant half for Leeds comes to an end.

Incredibly both sides rested almost their entire squads in midweek and come into today's games pretty fresh but Wigan look lethargic and Leeds look inspired.

Tom Briscoe's try on the stroke of half-time well and truly puts them in control of this semi-final.

Image source, Rex Features