Yorks 121-4 (target 171)published at 15.2 overs
Hmmm. Hello there....
Nicholas Pooran again smashes Matt Parkinson for six off his back foot!
That is huge over the top of the scoreboard on that side of the ground!
Lancashire beat Roses rivals Yorkshire by nine runs
Mahmood takes 3-33 for Lancs, who set Tykes 171 for victory
Surrey beat Glamorgan by 97 runs at The Oval
Glamorgan bowled out for 44 - their lowest-ever total
England's Tom Curran takes hat-trick for Surrey
Gloucestershire beat Middlesex by two wickets in early game
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Adam Williams and Brendon Mitchell
Hmmm. Hello there....
Nicholas Pooran again smashes Matt Parkinson for six off his back foot!
That is huge over the top of the scoreboard on that side of the ground!
Glamorgan 40-9 (target 142)
Michael Hogan's come out and, having earlier injured himself bowling during the final over of Surrey's innings, has been joined by a runner.
Daniel Douthwaite survives the hat-trick ball but Glamorgan remain on the ropes.
Long live the T20 Blast. This is chaos.
Need 57 more runs to win off 30 balls
Nicholas Pooran still believes he can get Yorkshire over the line though.
Smashes the last ball of Glenn Maxwell's over for four over extra cover.
Still a big ask though for the hosts...
Seems to be edging Lancashire's way this for another Roses victory.
Here's the most recent wicket to have fallen in Harry Brook...
Glamorgan 40-9 (11.5 overs, target 142)
Marchant de Lange attempts to smash his first delivery for six and is caught at long-on by Tom Curran.
Glamorgan are all over the shop and Imran Tahir's on a hat-trick.
Need 63 more runs to win off 36 balls
Shout for a stumping from Lancashire as Gary Ballance wobbles a bit trying to cut Matt Parkinson for four.
He's OK and gets his back foot behind the line in time despite Dane Vilas' quick hands.
Glamorgan 40-8 (11.4 overs, target 142)
Graham Wagg's not had his best 10 minutes here.
Having gone down with cramp trying to run a quick single - and staying down a good period of time while he's attended to - he's trapped in front by Imran Tahir just two balls later.
And it's two wickets in four balls from the South Africa spinner as Andrew Salter is caught behind! Bedlam!
Shot Nicholas Pooran!
Yorkshire needed this six. Matt Parkinson is hammered off the back foot into the legside and way over long-on's head.
That's woken some of the crowd up.
Yorks 99-4
Oh no Steven Croft - not a moment he'll want to see again...
Nicholas Pooran is put down on 9 by the Lancashire stalwart after he hangs one high up to long-off from a mistimed lofted drive.
It looked set for a simple catch but Croft looks like he couldn't get his hands in the right place and it spilled out.
Glamorgan 39-6 (10.2 overs, Target 142)
What's going on at The Oval?
Glamorgan are now 39-6, with veteran spinner Gareth Batty chipping in with a couple of wickets to leave the visitors now needing 102 from 58 balls.
Yorks 97-4 (target 171)
Another breakthrough for Lancashire as they turn the screw on Yorkshire.
Harry Brook falls as he tries to force the pace off Richard Gleeson but mistimes his drive out to James Faulkner inside the circle at point who hangs on to the catch after it takes a while to come down from the night sky.
Gary Ballance the new man in for Yorkshire.
Big wicket to fall in the past few overs at Headingley was that of Yorkshire's David Willey.
Matt Parkinson the man to set the trap for him on the deep square leg boundary...
Need 75 more to win off 48 balls
Another fairly uneventful over as ones and twos get accumulated by Harry Brook and Nicholas Pooran off James Faulkner.
Need 79 more runs to win off 54 balls
Nice shot by Harry Brook off Glenn Maxwell picks up four for Yorkshire.
Lovely bit of invention and shuffling across his crease to make room on the legside.
Nicholas Pooran repeats the dose a few balls later with a drive to the backward point fence.
Nicholas Pooran the new man in for Yorkshire at five.
Nine-an-over exactly is the required rate at the halfway stage.
Yorks 78-3
Big blow for Yorkshire just as things seemed to be going their way.
David Willey tries to clear the fence on the legside with a slog sweep but his hit is not long enough and Josh Bohannon takes a lovely catch running around the rope.
Willey 32, Brook 19
Short break in play before things resumed with Glenn Maxwell again.
David Willey was getting a bit of treatment and taking on a drink. Doesn't seem to have bothered him too much as he squeaks a four down to fine leg.
Four byes follows off the next ball as things starts to get costly for Lancashire.
Glamorgan 26-4 (Target 142)
We have a real contest on our hands here.
Tom Curran's hat-trick - the first by a Surrey bowler in T20 cricket - has helped restrict Glamorgan to 26-4 at the end of the Powerplay.
Twin spin now for Lancashire as Matt Parkinson is on at the Pavilion End with his leggies.
The Headingley crowd all of a sudden in a bit more of a quiet hush than a fervent roar as the ones and two get ticked over for the hosts.
Just four runs off that over as the required rate pushes towards nine-an-over.
Glenn Maxwell comes on to bowl for the first time tonight for Lancashire.
Yorkshire content to begin with to rotate the strike between David Willey and Harry Brook.