James Vince's 99 not out sees Hants beat Kent
Chris Gayle's last Somerset appearance is washed out by rain
Jacques Rudolph hits ton in Glamorgan win
Image source, Getty ImagesAfter some early fireworks from Essex opener Jesse Ryder, Sussex have fought back brilliantly with a couple of tight overs. Just five runs added from overs three and four.
BBC Sport's Elizabeth Ammon at Grace Road:, external "Franchises won't make the slightest bit of difference when the weather is like it has been here. It would still have been miserable."
Worcestershire captain Daryl Mitchell brings Pakistan spinner Saeed Ajmal into the attack and is rewarded with a maiden over. Jack Shantry tempts Mark Stoneman into attempting another big hit, but instead he finds Tom Kohler-Cadmore at mid-off. A crucial wicket for the Rapids, and only two runs from the over.
That could be almost game over at Old Trafford as the powerful Chesney Hughes holes out at long-on from Arron Lilley's off-spin. The required run-rate is more than 12 an over as Wayne Madsen walks out to the middle to join Billy Godleman. Katy Perry's Roar blares out over the PA system - do Derbyshire have a lionheart in their ranks who can steer them to victory?
Just one ball after reaching his half century, Sam Northeast is well caught by Chris Wood. Alex Blake now joins Darren Stevens at the crease.
The umpires have called the game off at Grace Road with Leicestershire 11 balls short of completing enough overs for a result to count.
Mark Stoneman is leading the charge for Durham, as the Jets get off to a flyer in their reply against Worcestershire. He has a six and six fours as he races to 35 from 13 balls.
Image source, Getty ImagesJesse Ryder hit two of Tymal Mills' first three balls for six, but the left-armer gets his revenge as he clean bowls the New Zealand international with a slower ball for 14. Mills, against his former county, enjoys the wicket - as you might expect.
Image source, Getty ImagesUnder the lights at Hove, Essex are chasing 141 for victory against Sussex. Big-hitting Jesse Ryder has plonked Tymal Mills' first ball into the stands for six.
Derbyshire are ahead of Lancashire's scoring rate in the first half of their innings, but it is going to take something special to get them home from here after the superb partnership by Steven Croft and James Faulkner earlier on. Chesney Hughes looks to be the best hope for the Falcons, 30 not out off 25 balls.
Despite a bright start for Fabian Cowdrey after hitting two fours, he falls after being bowled by spinner Danny Briggs for just 13 runs.
It doesn't look like we're going to see any more play at Grace Road, that's the view of Leicestershire head coach Andrew McDonald. A shame, as the match looked set for a close finish. The two sides will take a point each from this one if the teams don't make it back out to the middle.
They're off for rain at The Oval, too. England gave their chase of 399 a real go but they will fall just short of victory if the weather doesn't relent.
Eight overs gone in Kent's reduced-over game at Canterbury with another 10 to go. Fortunately for the hosts, they have Sam Northeast - the T20 Blast's leading run scorer this season - at the crease. He's just hit his sixth four of the night and is looking in good form.
Things are not looking good at Edgbaston as the rain fills in and gets heavier in Birmingham. The Bears were favourites to win the game after Notts posted only 149-9, but the Outlaws had taken the early wicket of Varun Chopra before the weather turned.
If we don't get out on the field again, both sides will have to settle for a point each.
And it's all over in Bristol as, despite Michael Klinger's fine knock of 104 from 63 balls, Gloucestershire have fallen 19 runs short. However, it has been a fine night for both captains as Klinger joined Jacques Rudolph in hitting a century in testing conditions.
It looked like the 192-run target might be unattainable for Gloucestershire early in their innings when the weather and light took a turn for the worse, but Klinger hit 10 fours and three sixes as he almost steered the hosts to an unlikely victory.
Despite Klinger's heroics, Gloucestershire lost for the second night in a row.
Having made just six runs in the first over, Leicestershire add 19 from their next two. Kevin O'Brien has 12 from just six deliveries, but he's then bowled by veteran Northants seamer Azharullah. And with that, the players are taken off for bad light. Remember, both sides must face at least five overs if we are to get a result.
Image source, Getty ImagesMahela Jayawardene's first half-century in the T20 Blast was much needed. It's got Sussex to a total that they may just be able to defend. Fair play to Essex though, it's a superb bowling display from the visitors, led by Shaun Tait's 3-29.
"One of the finest fielding performances I've seen," says BBC Essex commentator Paul Newton.
Tom Kohler-Cadmore brings up his second T20 half century with successive boundaries off the bowling of John Hastings. He finishes 53 not out from only 34 balls, his highest score in this format. Ben Cox picks up a single to end the innings, and group leaders Durham will require 160 to win.
After youngster Saqib Mahmood bowls two tidy overs at a cost of 14 in his debut performance for Lancashire, Tom Bailey strikes a crucial blow by removing Tillakaratne Dilshan. The Sri Lankan skies a catch to wicketkeeper Alex Davies, having hit a six and a four earlier in the over.