100 up for Wesselspublished at 19:28 British Summer Time 21 July 2017

19:28 BST 21 July 2017

Around the grounds

Riki Wessels, take a bow. He has just become the first ever Notts batsman to hit a century in a T20 match for the county.

It's come up with 11 fours and six sixes from 50 balls. Notts are 155-2 and we've not even reached 15 overs.

The highest scoring Notts batsman before this? Wessels himself with 97.

Kumar Sangakkara just does not age. Steve Finn is bowling very quick tonight but the Sanga just stands back in his crease and pulls over square leg for four. Effortless.

For all the funky shots of modern T20 cricket, it doesn't get much better than that.

Still, Finn finishes his four overs with one wicket for 19 runs. Very good figures.

McCullum drops Sibleypublished at 11 overs

11 overs

Down! More leg spin from Sowter and he finds Sibley's edge but Brendon McCullum puts down a low chance at slip.

Now there's embarrassment for Dawid Malan in the deep. He's beaten by the spin of a shot from Sangakkara, as he runs past the ball and then slips.

Four more to the Sri Lankan. Cue cheers from the Surrey faithful.

James Taylor
Ex-England batsman on BBC Radio 5 live sports extra

Image source, Getty Images

The run out and then picking up an injury at the same time was a nightmare for Kevin Pietersen and for Surrey.

They were flying and back-to-back wickets has hampered them.

It was very generous of Brendon McCullum to let him have a runner because he came into the game with an injury and he has done the same injury.

After all that KP commotion it has gone a little under the radar how well Middlesex have come back into this. Surrey were on 68 when they lost their first wicket in the seventh over.

Dominic Sibley is the new man.

Leicestershire are the only side in this year's T20 Blast to have a 100% record intact and they are doing their best to keep it that way against East Midlands rivals Northants.

Richard Levi is the latest man to have fallen, for 41, which will be a personal morale boost for him after a fairly difficult period following his hospitalisation - but after 11 overs Northants are 80-4.

Elsewhere, Riki Wessels (83) is continuing to have fun for Notts against Derbyshire.

But Yorkshire's David Willey has been run out when he was on 70 against Birmingham - as the hosts are currently 129-3.

It looks like Pietersen is just going to try and hit boundaries as he is playing with a runner but he's yet to find the middle.

Kumar Sangakkara is class. With all this commotion going on he's happy to knock the ball into the outfield and collect twos to keep the scoreboard ticking.

Three more dots to Pietersen. He's visibly struggling with that calf injury.

Finally the former England batsman gets off the mark with an edge down to third man as Jason Roy does the running for him.

Nervy start from KP. He's already been involved in a run out which saw the back of Aaron Finch who was whacking it to all parts...

This is really remarkable stuff. Brendon McCullum has pulled his full team together in the middle to speak to his players.

After a lengthy stoppage we're going to get back under way with a clearly injured Kevin Pietersen on nought and Kumar Sangakkara yet to face a ball.

Add in the confusion of a runner. This could be fun.

Kevin Pietersen is playing in this match after having a fitness test on a calf injury before play. I think that has influenced his decision not to run.

He's now asked for a runner. Crazy. Brendon McCullum very sportingly has accepted and that means Jason Roy has to get his pads back on and head back out.

Image source, Getty Images

Tonight is clearly a night for batting.

Yorkshire's David Willey reaches a half century off 27 balls with his sixth six as Yorkshire reach 103-2 after 11 overs.

Notts batsman Riki Wessels, meanwhile also reaches his fifty and survives a seemingly fairly straightforward catch chance for Derbyshire fielder Billy Godleman on the ropes. Notts are currently on 83-2.

Meanwhile, the last match of the evening, Essex's game with Hampshire has just begun.

Ebony Rainford-Brent
Ex-England batter on BBC Test Match Special

It was great awarenes by Dawid Malan to get himself set on the boundary, but that wicket came because Nathan Sowter was bowling a tight over.

Middlesex needed that breakthrough.

The Open is on this week and Yorkshire batsman David Willey has certainly taken some inspiration, teeing off against Birmingham at Headingley.

Willey has hit three fours and four sixes so far in a 16-ball 38 to lead his side to 75-2 after seven overs.

Meanwhile Northants opener Richard Levi - playing in his first senior match after being hospitalised when he was struck in the head with a ball in May - is leading the charge for his side against Leicestershire - so far with 23 runs as they stand 37-1.

Six more! Not the textbook drive of Aaron Finch but the unconventional scoop of Jason Roy. That's a remarkable shot over the fielder at short fine leg.

Middlesex skipper Brendon McCullum has a word with his bowler Toby Roland-Jones, telling him where he wants the ball bowled.

A decent comeback from the bowler. Just five from the final five balls of the over but Surrey have 66 after the first Powerplay.

Ebony Rainford-Brent
Ex-England batter on BBC Test Match Special

This is unbelievable stuff from Surrey. I normally say at the end of the Powerplay that you want to be around the 50 mark and they are already there.

Another bowling change as James Franklin comes into the attack.

It is not the best of starts from the left-armer as he lobs the ball up on a length and gets hit for four over mid off followed by a big six a ball later.

That went way back. The Oval crowd are loving this.