A perfect 40/20 kick from Sam Powell sets Wigan up deep inside Warrington territory, before Ryan Sutton is held down directly in front of the Wolves goalposts.

Wigan elect to kick the two points, and George Williams makes no mistake.

Image source, SWPIX.COM

Warrington have started this second half in much the same fashion as they did the first, with far too many errors being made.

At the moment though, Wigan are making just enough mistakes of their own to keep the hosts within six points.

Another Warriors penalty sees them waste good territory, with a scrum awarded to the hosts.

Warrington have some defending to do after Jack Hughes is penalised for a nasty block on Joe Burgess.

Wigan again look to attack down the left, but the move comes to an end with a forward pass.

Back under way for the second half.

Who will make it into the final four?

Parity didn't last long though, as a potent blend of poor defence and a missed forward pass allowed Liam Marshall to restore Wigan's lead.

Right, let's recap where things stand at half-time.

Joe Burgess scored twice to put Wigan 12-0 up, but Ryan Atkins jumped like a salmon to get Warrington back in contention...

...before he linked up with Declan Patton once again to pull the hosts level.

Image source, Getty Images

Before we get back to all things Challenge Cup, some big rugby league news to bring you that has nothing to do with on-field matters.

On Friday, Castleford's lengthy legal dispute with former winger Denny Solomona, rugby union side Sale and agent Andrew Clarke came to an end, with Tigers accepting a settlement "in excess of £200,000", along with legal costs of around £100,000.

You can read much more on that story by clicking here.

A brief look at the weather forecast in Warrington... warm.

So how do players deal with this?

"You have to just make sure you have good game management," Wigan's Liam Farrell told BBC One at half-time.

"You'll see the game slow down now and there'll be fewer opportunities, let's hope we get on the end of them."

After an error-strewn opening 20 minutes, we have a cracking game of rugby league on our hands.

Two tries from Joe Burgess and one from Liam Marshall have 19-time champions Wigan ahead at the break, but Ryan Atkins' two tries have kept Warrington in contention.

Liam Marshall has just put Wigan ahead, and now he's preserved their lead with an outstanding tackle.

Tom Lineham looks like he's about to go over in the left-hand corner for Warrington, but Marshall recovers brilliantly to force the winger into touch.

We'd hoped that the Challenge Cup might bring out the best in these two teams, and we might be getting something close to that now after a scrappy start.

Warrington are clearly in the ascendancy as the game approaches half-time.

Is Ryan Atkins over for a second try? It's going to be reviewed...

Image source, SWpix.com

Warrington stand-off Kevin Brown was in line to start today, but pulled up in the warm-up and was replaced by Declan Patton.

He spoke Tanya Arnold on BBC One a few moments before Joe Burgess went over for his second try: "I tore something a couple of weeks ago in the bottom of my foot.

"I went to the doctors yesterday and thought I could get the injection and play through. It's disappointing but Declan Patton's a great player so hopefully he can get the job done."

It's been pretty close as far as possession and territory are concerned, but Wigan have shown a cutting edge inside their opponents' half that Warrington have lacked.

Liam Marshall has a glorious opportunity to increase the lead, but he knocks on Thomas Leuluai's grubber kick, with a try inevitable had he pulled the ball into his grasp.

Well that was a cracking second try by Joe Burgess, but take a look at his first one after a swift break from the visitors.

Jonathan Davies
Former Wales rugby league international on BBC One

"That's a great finish. He realises he's not going to stay in play if he stays on his feet.

There's not much difference in the stats. Wigan have had two opportunities and been clinical."