Marvellous from Gary Ballance.

The England batsman clips Matt Coles through mid-wicket to the rope for Yorkshire's first boundary. Pure timing.

That's a much better over for Yorkshire - 10 from it.

A wicket from the last over means Nottinghamshire finish on 255-8.

Kent will have some chasing to do, and may be somewhat frustrated after having the hosts at 23-4 in the 10th over.

But Steven Mullaney anchored the recovery, with help from Billy Root and then Luke Fletcher.

The Outlaws then accelerated the scoring, with 80 runs came off the last nine overs, as Steven Mullaney got 90 and Luke Fletcher finished 53 not out.

We'll be back in about 40 minutes for the Spitfires chase.

Jamie Porter is on the money once again for Essex, conceding just three runs from his second over.

Very tidy from the 25-year-old.

It's the end of another fruitful over for Essex.

Adam Lyth and Gary Ballance are the two most experienced batsmen in Yorkshire's side - they'll need to use plenty of that to rebuild this innings.

Matt Henry ends with 10-3-43-1.

Another good over for Notts, and Calum Haggett will bowl the final one.

Fabian Cowdrey
Former Kent all-rounder on BBC Radio 5 live sports extra

This is the first time this season that Matt Henry doesn't know where to bowl.

He's going round the park and it's one of the bowlers who's doing it!

50 - Luke Fletcherpublished at 49 overs

49 overs

Fletcher 50, Carter 10

Matt Henry is back for his final over, and Matthew Carter takes a single from the first ball.

Luke Fletcher flicks one away for six on the deep backward square leg boundary.

The he smashes one straight up in the air but Henry can't get there as it drops safely at mid-on. The batsmen run two somehow while all that is happening.

Then a wide-ish delivery, edged for four.

Finally he gets a top edge for four to bring up his 50. He takes his helmet off and salutes the crowd.

A great knock off 33 balls, with seven 4s and two 6s.

James Taylor
Ex-England batsman on BBC Radio 5 live sports extra

This is a very handy partnership. Nottinghamshire are getting the initiative and the momentum going into their bowling innings.

They have a very experienced bowling line-up with plenty of variation, giving Steven Mullaney plenty of options.

That's a cracking first over from Jamie Porter, including the wicket of Tom Kohler-Cadmore.

The seamer swings a couple more back into Adam Lyth before going past his outside edge with the final delivery.

Teenager Harry Brook is in at three for the visitors.

Calum Haggett is back on for Kent.

Matthew Carter grabs a single before Luke Fletcher heaves him away to long on.

Carter then clips a six to deep square leg with a tremendous stroke. The next, he defends.

Then he gets a single from a delivery just outside off. Fletcher ends the over with an agricultural shot which goes to the fine third edge boundary.

Thirteen much-needed runs for Notts off the over.

Luke Fletcher is enjoying himself as the Notts tail wags.

Matt Henry is a bit peeved as he goes for consecutive fours.

Then Fletcher misses a short ball, which goes straight to Sam Billings behind, and he's frustrated.

Henry gives him another short ball to finish the over with a dot.

The Essex players run onto the field at Chelmsford, closely followed by Yorkshire openers Adam Lyth and Tom Kohler-Cadmore.

Gary Smee will take you through the first half of the Yorkshire innings..

BBC Radio 5 live sports extra will be sticking with commentary of Nottinghamshire against Kent for the visitors' run chase before switching to events at Chelmsford once we have a winner.

But if you want to listen to Essex v Yorkshire you can thanks to our colleagues at BBC Radio Essex and BBC Radio Leeds, who are teaming up to provide commentary. Simply select that option at the top of the page.

Matthew Carter gets off the mark with a single from his first ball to bring up the 200, before Luke Fletcher adds a valuable seven runs from the last two deliveries.

Harry Podmore is bowled out. His figures: 10-1-57-4. Decent.

Notts 205-7published at 45.5 overs

45.5 overs

A massive six from Luke Fletcher, over the longest part of the ground.

Essex have England opener Alastair Cook available and he comes into the side alongside experienced New Zealand seamer Neil Wagner.

Captain Ryan ten Doeschate is missing as he starts a two-game ban for repeated disciplinary breaches.

Yorkshire are without their contingent of big names as they have to make four changes from the side that secured their place in the knock-out stages by beating Northants.

England trio Joe Root, David Willey, Adil Rashid and India's Cheteshwar Pujara are all missing for the Tykes from that line-up.

Essex: Alastair Cook, Varun Chopra, Tom Westley, Dan Lawrence, Ravi Bopara, Adam Wheater, Ashar Zaidi, Matt Coles, Simon Harmer, Jamie Porter, Neil Wagner.

Yorkshire: Tom Kohler-Cadmore, Adam Lyth, Gary Ballance, Jack Leaning, Harry Brook, Tim Bresnan, Jonathan Tattersall, Matthew Fisher, Steven Patterson, Karl Carver, Ben Coad.