Dane Vilas strikes his third and fourth balls for four to close out the powerplay with an over of 12.

Still Northants on top after the first six, Lancs having chosen to bat.

Dan Worrall comes in again and left-handed John Simpson finds a gap at mid-wicket for four runs. Worrall varies his pace intelligently and Middlesex can only manage singles from his remaining deliveries. The current run rate is 8.5, though, so a decent foundation has been laid.

Just three runs from the fifth over.

What a powerplay this is for Northants.

Chris Peddy
BBC Sport at The Oval

Nice to see a packed house now and people have been able to get in after the tube troubles earlier - the balconies opposite are full of fans enjoying the evening sunshine.

A couple of early wickets have got these Surrey fans going, they've grown very accustomed to seeing their team win here this season.

John Simpson is the new Middlesex batter as Gus Atkinson takes up the attack for Surrey. Simpson has a big swish at one that is just short of a length and is fortunate not to nick through to the keeper.

Far less effort is involved as Simpson simply steers the next one down to third man for his first boundary.

One over left in the powerplay.

Kevin Hand
BBC Radio London

It was entertaining while it lasted from Joe Cracknell but the big shot didn't have it all and Jordan Clark makes the catch.

He fell into the trap, he's put it straight down the fielder's throat.

Keaton Jennings finds the fence with the final two balls of the over.

A wicket but 11 from the set, much-needed for Lanky.

Super fast start from Yorkshire at Chester-le-Street, with the White Rose racing to 50-0 in just 3.3 overs against Durham.

Adam Lyth has reached 37 not out from just 16 balls, including a six and six fours.

Rob Yates is always going well for Birmingham Bears, with two maximums in his 37 not out off 17 balls.

The Bears are 43-1 off four overs at Notts Outlaws.

Postpublished at 3 overs

3 overs

Middlesex 26-1

Great shot by Stevie Eskinazi, who walks across his stumps and flicks Jordan Clark away behind square for six.

He scampers a quick single as the bowler tries to kick the ball into the stumps in his follow through - Clark clearly isn't left-footed - and takes two to fine leg to end another productive over.

Tom Taylor takes over from his captain and concedes only a leg bye from his first three deliveries.

Keaton Jennings finally finds the opening boundary of the game but this is a superb start from the hosts.

Kevin Hand
BBC Radio London

Max Holden departs, he didn't get hold of it at all.

It's a thick edge which didn't get far, went high and it's a very, comfortable catch at backward point.

Comfortably gathered up by Gus Atkinson.

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Cracknell starts with a sixpublished at 2 overs

2 overs

Middlesex 15-1

Nothing like a bit of youthful confidence. Joe Cracknell takes a look at one and then deposits Will Jacks over the long-off boundary for the game's first maximum. A single ends the over and he keeps the strike.

One of the big games of the evening is the West Country derby between Somerset and Gloucestershire at Taunton.

And the hosts could not have had a worse start as Mohammad Amir removed Will Smeed for a third-ball duck.

Somerset 1-1 after two overs - yes, two overs.

There has also been early success for Leicestershire's Callum Parkinson, who bowled Brett D'Oliveira with the fifth ball of the first over to leave Worcestershire 11-1.

Ben Sanderson sharing the new ball and also begins miserly.

Josh Bohannon and Keaton Jennings watchful so far.

Jordan Clark has the ball for Surrey and Stevie Eskinazi tucks him away through mid-wicket for two runs to get the Middlesex score moving immediately. A couple of singles for each batter follow and Middlesex will be content with that start.