WICKET T Curran c De Caires b Higgins 6published at 17.1 overs
Surrey 220-6 v Middlesex
Surrey are collapsing!!
Tom Curran goes for a big one, is deceived by a change of pace from Ryan Higgins and can't clear the field.
Middlesex chase record 253 to beat Surrey
Previous best T20 Blast chase was Middlesex's 227-4 at Somerset in 2019
First win for Middlesex in 15 T20 games
Worcestershire Rapids beat Notts Outlaws by five wickets
Sussex Sharks beat Gloucestershire by seven wickets
North Group leaders Birmingham Bears beat Yorkshire Vikings
Kent Spitfires beat Essex by seven wickets
Adam Lanigan and Ben Kosky
Surrey 220-6 v Middlesex
Surrey are collapsing!!
Tom Curran goes for a big one, is deceived by a change of pace from Ryan Higgins and can't clear the field.
Surrey 220-5 v Middlesex
Three overs left. Surrey need 46 runs to set a new T20 Blast record score.
Surrey 218-5 v Middlesex
Those wickets have slowed the run rate to just 13.21!!
And Sunil Narine has to go as he picks out the man at deep midwicket.
Maybe a glimmer of hope for Notts Outlaws at New Road?
Calvin Harrison has collected two quick wickets, including that of Brett D'Oliveira for 36 and Steven Mullaney has just taken out Kashif Ali's middle stump to leave Worcestershire Rapids 80-5 in the 12th over, chasing 140.
Meanwhile, Yorkshire Vikings have slowed Birmingham Bears' progress but Rob Yates has advanced to 61 not out, with the Bears 164-6 in the 18th over.
Surrey 216-4 v Middlesex
Jamie Overton has some long levers and he is prepared to use them.
But he is undone by a slower ball from Tom Helm and Max Holden takes a fine catch out towards long-on.
Surrey 210-3 v Middlesex
It's one Curran for another as Tom heads to the crease.
Those wickets have slowed Surrey's charge down somewhat. A decent over from Ryan Higgins.
Surrey 202-3 v Middlesex
A slower ball from Ryan Higgins deceives Sam Curran.
The ball goes miles up in the air, but Max Harris gets under it and clings on.
Surrey 202-2 v Middlesex
Jamie Overton comes in and the rest of the over is played out in relative calm.
Until the last ball which he clubs over cow corner to reach his side's 200.
Sussex Sharks are completely on top at Bristol - they now have Gloucestershire reeling at 98-7 from 14 overs, with Shadab Khan taking 4-27 after Ari Karvelas had picked up the first three.
But it's not plain sailing for Essex, who are trying to rebuild against Kent Spitfires after losing Michael Pepper, Robin Das and Paul Walter in quick succession.
Dan Lawrence is still there on 28, but the Eagles are in some trouble at 64-4 in the eighth over.
Surrey 191-2 v Middlesex
Oh no!
Will Jacks takes one on from Martin Andersson, looking for the six to bring up his century but he picks out the sweeper on the deep cover boundary.
Still a glorious knock off only 44 balls with eight fours and seven maximums of the cleanest hitting you will see.
Surrey 191-1 v Middlesex
Seven overs to go - 10 an over and they reach 252.
12 an over and they reach 266 - a new T20 Blast record.
The rain is falling and it helps Middlesex take some of the sting out of the Surrey batters.
Josh De Caires concedes only nine from it - well bowled!
Surrey 182-1 v Middlesex
Sam Curran is the new batter.
The first ball is a wide and then his first legitimate ball is drilled for four. Bosh!
Chris Benjamin has gone, pumping Jordan Thompson to mid-off for 45 - and Birmingham Bears have now lost Glenn Maxwell as well, bowled by Matt Revis after hitting 21 from 10 balls.
The visitors are now 123-3 against Yorkshire Vikings in the 14th over.
At New Road, Worcestershire Rapids look on course to chase down the target of 140 against Notts Outlaws, with Brett D'Oliveira and Mitchell Santner taking them to 50-1 after the powerplay overs.
Surrey 177-1 v Middlesex
Laurie Evans with another massive six over long-on.
He goes for another one and Max Harris crashes it into his off pole.
Evans departs for a brilliant knock off only 37 balls - thrilling hitting!
Surrey 166-0 v Middlesex
The highest T20 Blast score is Somerset's 265-5 v Derbyshire in the quarter-final last year.
That is under severe threat this evening from Surrey.
The best total in all T20 cricket is 278, scored by Afghanistan and Czech Republic.
Surrey 166-0 v Middlesex
Laurie Evans joins in on the act as he goes six, four, four, six off Martin Andersson.
Evans has 75, Jacks 88 and it's a race to 100.
This is men against boys in cricketing terms.
Essex have made a steady start against Kent Spitfires, seeking the win that would all but mathematically guarantee them a quarter-final spot.
After losing Feroze Khushi cheaply, Dan Lawrence and Michael Pepper have taken to the Eagles to 40-1 after four overs.
At Bristol, meanwhile, Shadab Khan has taken two quick wickets for Sussex Sharks, removing Grant Roelofsen for 41 and Ollie Price for 19. Gloucestershire are in difficulties at 78-5 in the 11th over.
Surrey 145-0 v Middlesex
Will Jacks is such a powerful striker of the ball.
He pulls one over the mid-wicket fence and then golf swings the next ball for another six.
Jacks tees off again and that is three sixes in a row!
There is a brief delay as Middlesex captain Stephen Eskinazi changes his field around.
No difference - six more.
Ball five from Luke Hollmann - six more!
And the last ball? It's a full toss and he doesn't time it. Just a single!
Only the 31 from the over!
Surrey 114-0 v Middlesex
Laurie Evans launches one into the sky and it falls safely as almost half of the Middlesex team converge on it.
The next ball then lands safely too, just beyond the boundary rope for a six.
The next one is caught... but by a chap in the Surrey members' section. Six! And that is Evans' 50 off 27 balls!
He then clubs another one straight down the ground for four more.
19 from Ryan Higgins over... carnage!!
Chris Benjamin is enjoying himself for Birmingham Bears, battering a six and two fours from one Jafer Chohan over.
He's racked up 43 from 24 balls, while Rob Yates is 34 not out and the Bears are nicely placed on 92-1 at halfway against Yorkshire Vikings.
Meanwhile, Worcestershire Rapids have launched their run-chase against Notts Outlaws, with Brett D'Oliveira punching a string of early boundaries to take his side to 24-0 after two overs, chasing 140.