Image source, Adrian Harms

BBC Sussex's Adrian Harms on Twitter:, external Last home group match for @SussexCCC in the T20 and Al Fresco again with @johnnycburger @BBCSussexSport

Image source, @TrentBridge

Nottinghamshire on Twitter:, external The scene at Chester-le-Street, breezy and patchy sunlight #CricketHasLanded

Karl Brown's hoping to get Lancashire's innings off the ground and he's straight in to his work with a big hit off Oliver Hannon-Dalby for six.

But, moments earlier the visitors lost another wicket.

Liam Livingstone couldn't clear the fence for a second time and Jeetan Patel was there to snaffle the Lancashire opener off Hannon-Dalby's bowling.

Now Jason Roy and Kumar Sangakkara are really starting to opening up, much to the delight of the home fans.

The Surrey fifty comes up in the sixth over as Sangakkara pulls Alfonso Thomas to the mid-wicket fence before Roy chips down the ground for another boundary off the same bowler.

The hosts can be mightily pleased with their progress at the end of the power play.

Durham have won the toss and will bowl first at Trent Bridge.

Nottinghamshire name the same side which eked out a narrow victory over Derbyshire in their last T20 Blast appearance, with Alex Hales set to face the first ball in just a few minutes' time.

Durham, who have lost five of their previous six games in this competition, are unchanged from the side which suffered defeat at Yorkshire last time out.

Nottinghamshire: Hales, Lumb, Wessels, Patel, Taylor (capt), Christian, Mullaney, Read, Wood, Ball, Gurney.

Durham: Stoneman (capt), Mustard, Clark, Collingwood, Muchall, Arshad, Pringle, Hastings, Richardson, Borthwick, Rushworth.

Yorkshire's captain for the night Jonny Bairstow has just arrived at the crease after Jack Leaning was run out without scoring.

There is little riding on this game for the visitors, but Bairstow may want to make another statement to the England selectors.

Their batting hasn't exactly fired at Lord's has it?!

BBC Radio 5 live sports extra

Aggers and Geoffrey Boycott are just wrapping up on Test Match Special after an eventful day at Lord's.

Straight after them on BBC Radio 5 live Sports Extra from Hove will be Charles Dagnall and co with full ball-by-ball commentary of the crucial clash in the South Group between Sussex and Hampshire.

Derbyshire have won the toss and will bat first at the County Ground.

The hosts are unchanged from the side which all-but-ended Yorkshire's hopes of qualifying for the quarter finals on Sunday, as they seek to lift themselves off the foot of the North Group table.

Visitors Worcestershire also name the same starting line-up which lifted them to within a single victory of reaching the last eight at Headingley on Tuesday.

Derbyshire: Rutherford, Durston (capt), C Hughes, Madsen, Godleman, Thakor, A Hughes, Knight, Poynton, Cork, Rimmington.

Worcestershire: Mitchell (capt), Oliver, Kohler-Cadmore, Munro, Whiteley, Barnard, Cox, D'Oliveira, Leach, Ajmal, Shantry

Another fine batting performance from Graham Wagg has helped boost Glamorgan in the final overs of the game.

His unbeaten 54 from just 24 balls included five sixes, as he helped Glamorgan salvage a decent score after a tricky middle period.

Matt Hunn starred for Kent with the ball - he's finished with figures of 3-33, a fine return on his T20 debut.

Well over 20,000 are expected at The Oval tonight, but they have only seen a glimpse of the expected fireworks from the mouth-watering opening partnership of Jason Roy and Kumar Sangakkara.

In fact, England one-day batsman Roy has been dropped on 18 by Jamie Overton off Tim Groenewald. It was a difficult chance on the run, but the Somerset paceman will still be disappointed not to have hung on.

Meanwhile, Sri Lanka left-hander Sangakkara has moved serenely onto 15 not out after his superb 110 against Kent in the County Championship in midweek.

Image source, Getty Images

It's the first six of the night down at Edgbaston as Lancashire's Liam Livingstone has the officials searching for a new ball.

He's deposited Recordo Gordon out of the ground.

But the medium pacer gets a breakthrough a couple of balls later as Ashwell Prince fails to time one and Birmingham captain Varun Chopra takes the catch in the deep.

With the sell-out crowd at Chelmsford building nicely, Middlesex have won the toss and chosen to bat.

Essex are unchanged and include Australian Shaun Tait, who is the joint-second leading wicket-taker in T20 Blast before this round of matches with 20.

England's Steve Finn is absent for Middlesex after sustaining a minor finger injury, while Paul Stirling and Andy Balbirnie are on international duty, meaning Ryan Higgins, Harry Podmore, Gurjit Sandhu and Neil Dexter all come in.

Essex: Pettini, Ryder, Westley, Bopara, ten Doeschate (capt), Dawson, Foster, Napier, Topley, Masters, Tait.

Middlesex: Malan, Gubbins, Simpson, Morgan (capt), Higgins, Dexter, Scott, Rayner, McClenaghan, Podmore, Sandhu.

Sussex have won the toss and elected to bowl at Hove.

The second-placed Sharks are almost through to the quarter-finals with 15 points from their 12 matches, Hampshire are one of four teams locked on 12 points and are looking to reach their seventh consecutive quarter-final.

Teenage leg spinner Mason Crane comes in to the Hampshire side for just his second senior appearance.

Sussex: Wright (capt), Nash, Cachopa, Machan, Bailey, Finch, Beer, Yardy, Robinson, Mills, Liddle.

Hampshire: Carberry, Vince (capt), Wheater, Shah, Gatting, Smith, Wood, Arafat, Briggs, Bird, Crane.

Image source, @HantsCricket

Hampshire on Twitter:, external Beautiful weather at Hove for our crucial @NatWestT20Blast match against local rivals @SussexCCC! #elclasicoast

Things go from bad to worse for Yorkshire in this T20 Blast competition.

David Willey, on his return from injury, beats Will Rhodes all ends up in his first two deliveries before the batsman slaps his third to Ben Duckett. He departs for a duck and is replaced by Jack Leaning.

It's a fine over from Willey, full of pace and accuracy, and it's yet another poor start for Yorkshire.

Image source, @surreycricket

Surrey on Twitter:, external Here we go then

A tight spell from James Tredwell, who finishes with figures of 4-0-21-1, has put Kent right back in this game.

Matt Hunn has had a decent debut so far, bowling tightly and having Mark Wallace clean bowled for just three.

His final over is less accurate however, as Chris Cooke smashes two full tosses for huge sixes. The second goes sailing over the sightscreens and trees to register another huge six.

Hunn has the last laugh however as Cooke attempts a third six and is caught in the deep for 36. He's been replaced by David Lloyd.

It's Surrey who will bat first at The Oval after winning the toss.

These two sides might be struggling, but at least there's no chance of the complete washout when the sides were scheduled to meet at the County Ground in June.

Jade Dernbach returns for Surrey in place of James Burke as the hosts look to bounce back from defeat by Hampshire last time out.

Somerset have lost their last three, including a 22-run defeat at Canterbury against Kent last Friday, and also make one change, with Lewis Gregory in for Abdur Rehman.

Surrey: Roy, T Curran, Sangakkara, Foakes, Solanki, Mahmood, Burns, Ansari, Batty (capt), S Curran, Dernbach.

Somerset: Myburgh, Allenby, Trego, Hildreth, Cooper, Ronchi, Gregory, Groenewald, Overton, Thomas (capt), Waller.

Image source, Getty Images

Lancashire's Paul Horton's not involved in the action tonight, but is still clearly in awe of Birmingham Bears' Brendon McCullum.

Speaking to BBC Radio Lancashire before the game, he said: "He is up there for power and aggression in Twenty20 cricket alongside Chris Gayle and AB De Villiers.

"But in the end he's just another guy to get out and we'll have our plans for how to do that going in to the game."

Down at Wantage Road, Northamptonshire have won the toss and will bowl first against Yorkshire.

Yorkshire, who are all but mathematically out of the running, have opted for a young side, with Andrew Gale and Tim Bresnan rested.

Jonny Bairstow has taken over the captain's role, with Matt Waite and Ben Coad handed their T20 debuts.

Two wins will guarantee Northants a quarter-final place, with David Willey returning to the Steelbacks side.

Northants: Cobb, Levi, Duckett, Willey, Wakely (capt), Crook, Rossington, Keogh, Kleinveldt, White, Azharullah

Yorkshire: Lees, Rhodes, Maxwell, Bairstow (capt), Leaning, Gibson, Plunkett, Waite, Carver, Coad, Fisher