Sam Curran takes 5-26 as Surrey beat Somerset to leapfrog them at top of South Group
Birmingham Bears go top of North Group with 21-run win at Worcestershire
Lyth (90 not out) & Malan (79) ease Yorkshire to eight-wicket win over Leicestershire
Croft hits 101 to set up Lancashire win by 35 runs at Northants
Champions Hampshire slip to narrow six-run loss at Sussex in last-over thriller
Essex recover from 1-2 to chase 176 to win and beat Glamorgan by four wickets
Haider hits last ball for four as Derbyshire earn tie at Durham
Kent beat Middlesex by 13 runs despite 121 not out by Holden
Yorks 165-2 v Leics 195-5
Just 108 fewer than he managed last week.
James Wharton edges behind as Michael Finan achieves his second success for Leicestershire.
We're half-way through the 16th over as David Wiese comes out to bat.
Somerset 120-6 v Surrey 195-5
Three wickets in the over and suddenly the wheels have well and truly come off for Somerset.
Lewis Gregory goes second ball as he pulls a short one to deep mid-wicket where Gus Atkinson takes the catch.
Sam Curran now has 4-18 from three overs.
Northants 111-7 v Lancashire 204-7
Numbers eight and nine Tom Taylor and Andrew Tye are in for Northants, but they are facing virtually mission impossible to win from here.
Just 94 needed off the last five overs!
They will need to pepper the boundaries and then some!
Kent 228-3, Middlesex 189-6 (17.2 overs)
Big wicket!
The 71-run stand between mostly Max Holden and Luke Holllman is over.
Hollman yahoos, but cruelly plays on to Fred Klaassen.
Kent 228-3, Middlesex 189-5 (17 overs)
Image source, Rex Features19 off the over - as Max Holden reaches his 100.
40 needed. Off three.
Ths is actually doable.
Durham 178 v Derbyshire 148-3 (17 overs)
A big over for Derbyshire.
Haider Ali goes six, four off two Paul Coughlin balls. That is 15 off the over and the target is down to 31 off three overs
Somerset 119-5 v Surrey 195-9
A third wicket for Sam Curran and it's the big one.
Tom Banton is deceived by a slower ball and Will Jacks takes the catch at mid-off.
Another setback for Somerset from the next delivery as Sean Dickson is run out as he attempts a second on a mis-field by Gus Atkinson.
Was the ball in Sam Curran's hands, though, when he broke the stumps at the bowler's end? A controversial moment.
Yorks 158-1 v Leics 195-5
Finally, a breakthrough for the Foxes as Michael Finan removes Dawid Malan with the final ball of the 14th over.
The England left-hander hit three sixes and nine fours in his 45-ball innings.
James Wharton is the new batter - perhaps you recall his 111 not out off 56 last Friday? He won't need that many tonight.
Durham 178 v Derbyshire 133-3 (16 overs)
Nathan Sowter takes the wicket of Leus du Plooy in his final over as he finishes with 1-32 off his four.
Derbyshire still feel like favourites, but Durham have kept things tight and are still in this game.
Somerset 117-3 v Surrey 195-5
A welcome boundary for Sean Dickson off Tom Lawes but Somerset lose a little bit more ground in that over - the 13th.
Tom Banton is the key, on 53 not out, and Somerset need 78 from 42 balls.
Kent 228-3, Middlesex 170-5 (16 overs)
Image source, Rex Features59 needed off four at Lord's.
Surely not?!!!
Disheartened Kent have already been savagely pierced by a record 501-checkout by Surrey in the County Championship this week.
If they lost this too, there would be great pain felt in hop country.
Essex 66-3 v Glamorgan 175-6
End of the powerplay for Essex.
Feroze Khushi has blazed his way to 36 while Paul Walter has quickly got up to 19 and the partnership is now worth 31.
Somerset 110-3 v Surrey 195-9
Slog sweep by Tom Banton and is six runs off Sunil Narine.
The next ball is nudged away for a single and brings up his 50 from 33 faced.
There are eight more to come and Somerset need another 86 to win.
Northants 87-6 (12 overs) v Lancashire 204-7
Chris Lynn has gone for 21 after getting one all wrong in going for a big shot off Tom Hartley.
Someone will have to do something spectacular if Northants are to win this one.
They need 118 off eight overs.
Sussex 183-6 (20 overs), Hampshire 24-4 (3.4 overs)
Another wicket for Sussex. Another one for Brad Currie, his third, as he knoicks out Ross Whiteley's middle stump.
Poor Whiteley, who won the Blast wih Worcestershire in 2018 as well as with Hants for a second time 11 months ago, is hopelessly out of form. Just 76 runs in seven knocks now this season.
Durham 178 v Derbyshire 124-2 (13 overs)
Luis Reece is anchoring this Derbyshire innings. He has brought up a third T20 innings of the season off 39 balls.
At the other end, Leus du Plooy bludgeons a six and the visitors need 55 off the last six overs with eight wickets in hand.
Yorks 145-0 v Leics 195-5
Image source, Rex FeaturesThere is still work to do but it is starting to look like when and not if Yorkshire will reach their target at Headingley.
Four for Adam Lyth off Callum Parkinson takes him to 70 not out at the end of the 13th over, with Dawid Malan on the same score.
Another 51 needed off 42 balls and all 10 wickets standing.
This is now a first wicket record for Yorkshire against any other side - beating 131 by Lyth and Phil Jaques against Derbyshire in 2012.
Kent 228-3, Middlesex 118-5 (10.4 overs)
After their Kent shellacking, Ryan Higgins and Max Holden gave the hosts a bit of hope with a stand of 77.
But three wickets in 11 balls would appear to have closed the door.
Higgins (35) was quickly followed by John Simpson and Jack Davies, both removed by Kane Richardson.
But Holden remains, sniffing a century as well as a very unlikely victory.
Essex 40-3 (4 overs) v Glamorgan 175-6
Jamie McIlroy has picked up his third wicket as he has dismissed Josh Rymell but Feroze Khushi is leading the charge.
He is on 29 off 10 balls and he has now been charged by Paul Walter.
They are ahead of the run-rate, but they cannot afford too many more wickets to fall.
Somerset 99-3 v Surrey 195-9
How important will that be?
Tom Abell goes at the start of the 11th over, edging Gus Atkinson to the keeper as he tries to square cut.
He put on 69 in seven overs with Tom Banton, who has now been joined by Sean Dickson.