Notts beat Birmingham by eight wickets
Alex Hales stars with 86 not out off 43 balls
Glamorgan beat Surrey with highest domestic T20 score at The Oval
Matthew Fisher, 17, takes 5-22 as Yorkshire defeat Derbyshire
Alex Hales lifts Boyd Rankin over long-on for six and it's huge - it almost ends up in Nottingham city centre. Another one follows over deep square leg to bring up the half-century.
Steven Davies is keeping Surrey in the match against Glamorgan, bringing up his 50 off 27 balls, but with the required run rate rising to over 13 the hosts are going to need plenty more from the 27-year-old to get the 136 runs they require from the last 10 overs.
In a 19:00 BST match, Essex have been reduced 5-2 as Nick Browne fell to Fidel Edwards for just two after Jesse Ryder was clean bowled for a third-ball duck by Chris Wood, with Hampshire starting their defence of 173 well.
Alex Hales and Samit Patel nudge a single apiece in the rest of that Jeetan Patel over - 61 needed off 54 balls.
Image source, Getty ImagesA rain delay often causes havoc and no sooner had Grant Elliott returned to the crease for Leicestershire, then was he back in the hutch as his attempted sweep off the bowling of Stephen Parry took the top edge and was caught by Lancashire's Ashwell Prince.
George Edwards then picked up his maiden wicket for the Red Rose county as Kevin O'Brien was caught at cover for 47 to leave his side 111-5 after 13 overs, the game having been reduced to 15 overs per side.
The weather is a factor in Leeds as well with the Yorkshire players slightly delayed in returning to the field for their innings. and Ben Cotton provides an early breakthrough for Derbyshire as Andrew Hodd is bowled for a first-ball duck.
Image source, Getty ImagesBrendan Taylor didn't look quite right out there and was lacking a little bit of timing. That shows as he lofts Jeetan Patel straight down the throat of Tom Lewis at deep square leg. Samit Patel in next for Notts, whose battling line-up is one of the most imposing in the T20 Blast this summer.
Looks like being a tidy over from Rikki Clarke, until Brendan Taylor plonks him straight back over his head for four. It just evades the outstretched arms of Keith Barker. We're at the halfway point of Notts' innings, and the hosts are 78-1 at Trent Bridge, chasing 142 for victory.
Opta Jim: "Glamorgan's 240/3 is the 4th highest total in domestic English T20s. Next highest at The Oval is 217, by Lancashire in 2005. Imposing."
Another spinner, Ateeq Javid, is brought into the Birmingham Bears attack and only goes for four off his first over. Now 69 needed off 66 balls.
Alex Hales pulls Boyd Rankin for four and tries it again, but not so successfully. Luckily for the Notts opener, it lands safe. Even luckier, the throw in hits the stumps and he picks up a cheap overthrow. Hales 32 off 21 balls.
BBC London's Kevin Hand: "Incredible from Marshall (56) & Cockbain (91*), made a tough chase look easy against a strong attack. Middx kicking themselves."
Image source, PAKent finish with 185-9, thanks largely to captain Sam Northeast, who made 40 off 29 balls, and wicketkeeper Sam Billings who hit a 28-ball 46. Oliver Robinson's three wickets for Sussex checked the hosts late on, but the away side will require Chris Nash and Luke Wright to start well under the floodlights.
Meanwhile, Jimmy Adams' unbeaten half century helped Hampshire to 173-4 after a slow start against Essex. Ryan ten Doeschate, who flew back from the IPL to captain his side, took 1-15 from his two overs.
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Two more lbw shouts turned down, this time Jeetan Patel the unlucky man as he appeals unsuccessfully for the removal against Brendan Taylor on two occasions.
Image source, Getty ImagesThe powerplay ends with Notts 55-1 and requiring 87 runs from the final 14 overs. Notts are still ticking along nicely and, with Alex Hales still there hitting boundaries for fun, they should go on to win quite comfortably from here.
Image source, Getty ImagesScotland batsman Calum MacLeod blasted 12 fours in his 60 off 32 balls as Durham Jets beat 2013 winners Northants Steelbacks in a rain-affected contest at Chester-le-Street. MacLeod shared an 84-run partnership with Phil Mustard (51) as Durham posted a total of 174-8.
Northants struggled to 47-5 after eight overs in reply, with two wickets each for Chris Rushworth and Usman Arshad, but the crowd were denied the chance to see whether Shahid Afridi (pictured bowling) could rescue the visitors as the rain closed in with the all-rounder on three not out, and no further play was possible.
Alex Hales escapes a shout for lbw and then works the next ball to the on side for a single. Notts need 96 from 90 balls.
A breakthrough, and how it was needed for Birmingham Bears. Riki Wessels doesn't quite catch a swish to the leg side and Tom Lewis safely pouches the ball on the boundary's edge. A wicket for Rikki Clarke, and Brendan Taylor - a star at the World Cup earlier this year with Zimbabwe - is the next man in.
What a night it is turning out to be for young Matthew Fisher, his first T20 appearance, and the Yorkshire bowler has claimed a maiden five-for.
The 17-year-old has taken the third best figures for a White Rose bowler in the competition as Derbyshire were bowled out for only 128 from 18.2 overs.
Hashim Amla top-scored with 29 and Chesney Hughes made 27 off 19 balls, with three fours and a six, before a rampant Fisher delighted the Headingley crowd.
Alex Hales, feeling a little left out on two not out, gets in on the act and swipes off-spinner Jeetan Patel over deep square leg for six. He then adds a swept four. This is too easy for Notts. Admittedly Birmingham are missing some key men, but they're looking anything but defending champions here.
Durham CCC: "And.......it's raining again. #DurhamJets"