Postpublished at 31 mins
Warrington 6-0 St Helens
Deary me, St Helens knock on from a high Warrington kick to the corner.
Is the sunshine having a bit of an impact, do you think?
The Wire begin a set of six deep in the Saints half.
FT: Warrington 20-12 St Helens - last of four Challenge Cup quarter-finals
Dufty try, Currie score and solo Williams effort for Wire; Sailor and Clark cross for Saints
Semi-final draw: Hull KR v Catalans, Warrington v Leigh
Use audio icons in 'watch & listen' tab for live BBC Radio commentaries of other games including York v Widnes in 1895 Cup
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Jay Freeman
Warrington 6-0 St Helens
Deary me, St Helens knock on from a high Warrington kick to the corner.
Is the sunshine having a bit of an impact, do you think?
The Wire begin a set of six deep in the Saints half.
Warrington 6-0 St Helens
Robbie Hunter-Paul
Former New Zealand international on BBC Two
It becomes an energy game at this point.
Staring into the sun drains it out of you too.
Warrington 6-0 St Helens
If you're just joining us, don't let the scoreline fool you, a lot has happened away from Matt Dufty's try for the Wire.
Sironen, for what it's worth, will be able to continue and is back out on the bike, but can't return to the field until his allotted 15 minutes is up.
Warrington 6-0 St Helens
Jonathan Davies
Former Warrington and Great Britain international on BBC Two
St Helens have marshalled Warrington's Matty Ashton really well today.
They have defended really well here and are set up well.
Warrington 6-0 St Helens
Robbie Hunter-Paul
Former New Zealand international on BBC Two
We have come into a real strange part of the game, Injuries have come in and mistakes are being made.
It could be a dangerous moment for both sides, points could be given away here.
Warrington 6-0 St Helens
It's not given but my word, what an effort to even try.
Tristan Sailor's try isn't given due to a knock on. But I'm not sure on that call to be honest.
It's undoubtedly NOT a try, but the reason should be because the ball is pulled back onto the boot of the onrushing Matt Dufty rather than a knock-on in my opinion.
Either way, we're still at 6-0 rather than 6-4.
Warrington 6-0 St Helens
Oof, St Helens have gone over.
Tristan Sailor's attempted an audacious tap down from a kick through the posts on the last.
Has he grounded it before going into touch? It's going upstairs to video referee Tom Grant.
#bbcrl
Andy G: Seen those result in a card this year as well, second man in resulting in an inadvertent crusher tackle on a falling opponent.
Warrington 6-0 St Helens
So, play restarts.
No penalty is given and play gets going again.
Warrington 6-0 St Helens
Jonathan Davies
Former Warrington and Great Britain international on BBC Two
Williams just catches him
He could not do anything about it, that's just a rugby incident for me.
Warrington 6-0 St Helens
Dear oh dear.
Warrington's Rodrick Tai and George Williams combine in a tackle with St Helens' Jake Wingfield. Initially Wingfield looks out cold on the ground and eventually he's roused and escorted to the sidelines by the physios.
Replays show there's probably no malice in it, as his head first hits Tai's shoulder, then the torso of Williams. But it's a hard hit nonetheless and hopefully he's okay.
Warrington 6-0 St Helens
Jonathan Davies
Former Warrington and Great Britain international on BBC Two
They're not sure St Helens.
That's the one weakness they have, that was a poor kick again right there, they rushed it.
Warrington 6-0 St Helens
St Helens' Curtis Sironen is marched to the sidelines having been caught by a high elbow.
He's off for a head injury assessment.
So both sides have been depleted in a high octane defensive opening 20 minutes or so.
Warrington 6-0 St Helens
The news from the sidelines is that Warrington intend to throw the ball about with Paul Vaughan a bit to assess how he's getting on with that strapped-up finger.
So he could make a return to the field.
Warrington 6-0 St Helens
Sharon Shortle
BBC Sport commentator on BBC Two
What have St Helens got in the tank as they try and respond here.
The level of intensity that we saw from the first whistle is still right there, absolute quality over the park.
Warrington 6-0 St Helens
Ben Currie attempts an offload to George Williams as Warrington race straight from the restart.
But his effort is knocked on and St Helens breathe a sigh of relief.
Meanwhile Paul Vaughan has returned from the tunnel and is sat on the sidelines with what looks like a heavily strapped up finger.
It's not really clear at this stage whether his afternoon is over. You'd imagine he'll be raring to get back out there.
Matt Dufty, goal Marc Sneyd
Warrington take the lead!
It comes via a mistake from Dayon Sambou and soon after Warrington build the attack, with a wayward throw backwards from James Harrison keeping it alive.
The ball is eventually fed to Matt Dufty who finds a gap in the St Helens defence and the full-back races through.
Marc Sneyd adds the two and the Wire are off to the races.
Warrington 0-0 St Helens
Oof, a high arm from St Helens' Tristan Sailor on Matty Ashton goes unpunished.
Referee Liam Moore is really letting this game flow today.
Warrington 0-0 St Helens
Robbie Hunter-Paul
Former New Zealand international on BBC Two
That's a try saving catch by Alex Walmsley.
If he doesn't intervene then that is try time for Warrington, great take.
Warrington 0-0 St Helens
Warrington scrum half George Williams lays off to full-back Matty Dufty as the Wire go on the attack but he is well brought down by St Helens.
Running out of tackles the kick goes in to the corner but Saints' Alex Walmsley makes a high catch just before the hosts can get on the end of it.
Both sides looking good in defence so far.