50 for Jonny Bairstowpublished at 12:22 British Summer Time

12:22 BST

Yorks 542-3 v Northants 147

The umpires have taken the dreaded light meter reading and we're playing on for now.

Left-arm spinner Saif Zaib is coming on to bowl to Jonny Bairstow - who is on 46.

His third ball is only a tad short and smashed by Bairstow over mid wicket going back and across for six!

That's a barnstorming 50 off 58 balls with one six and eight fours.

100 for Sam Hainpublished at 12:19 British Summer Time

12:19 BST

Notts 487 v Warwickshire 236-4

There it is!

Like a few other Bears batters, it's not been the best of campaigns for Sam Hain.

But he will take a positive memory on his holidays and into winter nets as he turns Freddie McCann into the legside. He has to sprint for the single which brings his second Championship century of the season.

It's the 19th ton of Hain's red-ball career and comes off 202 balls, with11 fours.

100 for Tom Hainespublished at 12:16 British Summer Time

12:16 BST

Sussex 229-3 v Middlesex 271

Spinner Luke Hollman bowls to Tom Haines on 99...

A leg side ball disappears for four byes. Knee high full toss!

The next ball is cut through backward point for four!

That's his third century of the season and the 12th of his career.

161 balls with 13 fours.

Sussex need 21 more runs to clinch the Division Two title.

Sam Hain has just one century this season and on 95 he almost sees his hopes of a second disappear as he pushes forward and gets an outside edge to Farhan Ahmed.

It drops just short of the solitary slip, Joe Clarke.

Dropped catch at Chester-le-Streetpublished at 12:13 British Summer Time

12:13 BST

Durham 360 v Kent 175-4

Dear me. It may not matter too much at the end of the day, but that's a poor drop by Callum Parkinson on the boundary.

Joe Denly, five short of his half-century, goes for the hook against James Minto and Parkinson gets right underneath the ball at long leg - then somehow spills it.

Denly, along with Jack Leaning, is batting Kent towards safety in this game. Another 36 will usher the visitors beyond the follow-on target.

250 for James Whartonpublished at 12:11 British Summer Time

12:11 BST

Yorks 519-3 v Northants 147

Image source, Rex Features

James Wharton faces Fateh Singh on 249...

Back and across to cut to deep point for one and that's 250 off 289 balls with 30 fours and eight sixes.

He's only the third Yorkshire player to score 250 against Northants.

Will Williams into the attack at first-change for Lancashire and Adam Hose welcomes him by hitting his third ball for four.

George Balderson then strays down leg and flicks off Hose's thigh to give wicketkeeper Matty Hurst no chance. Four runs.

Six more for James Wharton to move to 248! His eighth six to go with 30 fours.

He's belted James Sanderson over long on going forward with a beautifully lofted drive.

Spinner Fateh Singh is round the wicket to Jonny Bairstow, who goes inside-out to drive through extra cover for two. He's on 42 off 39 balls.

Single to extra cover.

Wharton carves the next ball through backward point for a single.

Century-maker Freddie McCann is into the attack in place of Rob Lord and we have spin at both ends.

He serves up a loopy full toss which Sam Hain dispatches down the ground for four to move into the nineties.

But McCann then almost has a wicket with his fourth ball as Ed Barnard goes close to chopping on.

Image source, Rex Features

Rob Lord is struggling to nail down a consistent line and length and continues to get a bit of tap.

An attempted yorker ends up as a low full toss which Sam Hain drives straight down the ground for four. A fourth boundary off his last two overs.

Ed Barnard then gets in on the act, hitting Farhan Ahmed's first ball over midwicket for another four.

The Bears within 37 runs of a batting point.

Adam Hose drives George Balderson through the covers to bring up the Worcestershire fifty in the 18th over.

Muted applause with half of the batters back in the hutch.

Hose repeats the dose for back-to-back boundaries to go to 15.

He then goes on to the back foot to chop Tom Bailey through the offside for a third quick boundary to go 19.

Gus Miller and James Sales have been taken to the cleaners here as Yorkshire continue to pile on the runs.

James Wharton slams James Sales over mid wicket for six and he takes six more off the bowling of Gus Miller in the same region in the next over.

He takes the partnership with Jonny Bairstow to 100 in 59 balls driving Miller down the ground and swivel pulls six more over mid wicket.

The 500 comes up in 99 overs with a powerful front footed slap over wide mid on.

25 runs off that over! 25!

50 for Ed Barnardpublished at 11:53 British Summer Time

11:53 BST

Notts 487 v Warwickshire 204-4

Ed Barnard carves Rob Lord into the offside for four to reach fifty in Championship cricket for the seventh time this season.

It's come off 108 balls with eight boundaries.

It's also the 27th first-class fifty of the all-rounder's career. Hats off.

50 for Dom Sibleypublished at 11:51 British Summer Time

11:51 BST

Essex 508-8 dec v Surrey 86-4

Image source, Getty Images

There's a half-century for Dom Sibley, who drives Matt Critchley to long-off for a single to reach the landmark from exactly 100 balls.

Not a bad strike rate - though let's not forget Sibley is a key component of Surrey's T20 side these days!

It's the sixth time the opener has passed 50 in the County Championship this season, converting two of them into hundreds.

Tom Alsop is down the track to Josh de Caires, smashing the spinner over long on for six to take Sussex past 200.

The team are within 50 runs of a batting point and of course the Division Two title.

200 up for Warwickshirepublished at 11:49 British Summer Time

11:49 BST

Notts 487 v Warwickshire 200-4

Rob Lord into his second over of the day replacing Brett Hutton.

Ed Barnard was a handful with the ball and is now doing his bit with the bat as a cover drive brings him a second pair of back-to-back fours in as many overs to go to 48.

First spin of the morning as Farhan Ahmed (2-33) comes on at the Radcliffe Road End.

Sam Hain nudges his first ball for a single and Barnard then brings out the sweep and picks up one more to move the Bears within 50 of a first batting point.

50 for Jack Leaningpublished at 11:47 British Summer Time

11:47 BST

Durham 360 v Kent 146-4

Image source, Getty Images

Good knock by Jack Leaning, who so often holds the Kent batting together and he brings up his fourth half-century of the season, punching Callum Parkinson off the back foot for a couple.

Leaning's 50 comes up from 108 balls, with Joe Denly going nicely at the other end on 29.

50 for Tom Alsoppublished at 11:46 British Summer Time

11:46 BST

Sussex 185-2 v Middlesex 271

Tom Alsop is forward to Luke Hollman, squeezing the spinner through square leg to reach 50 off 114 balls with eight fours.

That's his eighth half century of the season.