Lyth knock helps Yorks build lead in relegation battle against Hants
Essex declare on 474-7 against Worcs, who will be relegated if they fail to win
Champions Surrey dominating against Somerset
Kent secure full batting bonus points after Glamorgan bowled out for 186
Sussex batsmen struggle after Warks make 440
Durham record lowest ever County Championship score against Leicestershire
Glamorgan 186 v Kent 271-5
Zak Crawley has only got one century in his County Championship career, but it's becoming a pretty memorable one.
The 20-year-old brings up 150 from 216 balls with 21 fours and one six.
Kent's lead is going to be a tough one for Glamorgan to overturn.
Sussex v Warwks 440
It's all over!
Ryan Sidebottom comes and goes for a two-ball duck as Jofra Archer fires in another yorker and the batsmen is plumb in front trying to nudge to leg.
Goodness me - 6 wickets fall for 19 on a flat deck and Archer finishes with 4-66.
Sussex v Warwks 440-9
Jeetan Patel is in the middle with Chris Wright now as Jofra Archer steams in to try and finish the innings off. He's got another one!
Chris Wright is the third batsman to be yorked by the bowler in this spell as the off peg is ripped out of the ground.
Warwickshire have lost five wickets for 19.
Thank goodness for the runs of Ian Bell and Jonathan Trott.
Image source, BBC SportBen Stokes and Alex Hales are included in England's one-day squad to tour Sri Lanka, after being charged with bringing the game into disrepute.
The other big news sees Warwickshire's Olly Stone given a first call-up, replacing Liam Plunkett, who will miss the start of the series for his wedding.
Ben Stokes and Alex Hales are included in England's one-day squad to tour Sri Lanka, after being charged with bringing the game into disrepute.
Read MoreSussex v Warwks 433-8
Well, that didn't take long!
It's a five-ball duck for Olly Stone, who moments after being confirmed as a pick for England's one-day squad is yorked by Jofra Archer.
The wheels are coming off here but still a healthy total for the visitors.
#bbccricket
Ged Ashton: Leicestershire to win by the end of the day. Durham being outplayed in all departments
Sussex v Warwks 433-7
Bowled him!
An absolute cracker from Jofra Archer, who spears one into Keith Barker.
The batsman is squared up and his off stump is rocked back.
Ollie Stone's turn to bat.
Yorks 184 v Hants 156-9
The rain has started falling here in Leeds.
Not heavily but it's enough to hold up play for now.
Pity as we could have a real thriller on our hands here.
Hopefully only a short delay.
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Glamorgan 186 v Kent 249-5
It's all going swimmingly for Kent after lunch.
Sam Billings has 36 from 60 deliveries, while Zak Crawley has added 18 more since the interval to move on to 132.
The lead is 59 runs and climbing fast, with 53 coming from the past 10 overs.
Sussex v Warwks 431-6
Ooh! Close one there.
Keith Barker gets a yorker from Jofra Archer, which he just manages to squeeze out.
Just the one run in that over. The squeeze is on here.
Leicestershire 321 v Durham 61
It's Durham's worst ever score in County Championship cricket.
Ninth batsman Barry McCarthy adds 14 to the total before he becomes the last man out.
Four ducks and a top score of just 16 from Alex Lees see Durham fall 260 runs short of Leicestershire's total, with Mohammad Abbas taking 5-23.
Unsurprisingly, Leicestershire enforce the follow-on.
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Sussex v Warwks 425-6
Ollie Robinson is really pinging it in here.
Goodness knows what the issue is with Keith Barker.
The batsman turns the ball round the corner for a couple.
Chris Wright is the new batsman, by the way.
Just the two from the over.
Sussex v Warwks 423-6
Not much doubt about that one. Struck below the knee and right in front.
May well have hit all three stumps.
Can they keep the visitors to under 450?
Seems possible now.
Yorkshire 184 v Hampshire 156-9
Kevan James
Sport Presenter, BBC Radio Solent
A two hour 40 minute session in which Hampshire added 77 runs for the loss of four wickets in 40 overs.
Tim Bresnan had wonderful figures this morning of 3-17, giving him five wickets in an innings this season for the first time.
Gareth Berg (24*) has marshaled Fidel Edwards well for the last wicket, frustrating Yorkshire. Conditions for batting are a little easier compared to yesterday. But the wind is very gusty and very strong at times.
Sussex v Warwks 423-5
Well, there seems to be an altercation between Keith Barker and Ollie Robinson.
Not sure what that's all about.
Ollie Robinson unleashes a bouncer to end the over and the players ignore each other.
Let's check in on our games at Lord's, Bristol and Grace Road...
Middlesex have taken the first Derbyshire wicket with Luis Reece lbw to Tim Murtagh for 16, but the visitors remain in reasonable shape on 46-1, trailing the hosts by 377 after centuries from Sam Robson and Max Holden helped them to 423.
Durham have lost their 9th wicket away to Leicestershire at Grace Road in a batting horror show.
Matt Salisbury was caught behind off the bowling of Ben Mike for two and the visitors are now 264 behind on 57-9.
Northants are 131-5, leading by a slender six runs against Gloucestershire at Bristol.
Ben Curran and Alex Wakely have fallen within three overs of each other as the hosts claw their way back into the game. David payne has taken 2-27.
Worcestershire 94 v Essex 407-6
Essex have maximum batting bonus points.
Worcestershire have just one over to take three wickets and claim full bowling bonus points, not that it matters much now they have no realistic chance of winning this game.
Sussex v Warwks 421-5
Goodness me! Where did that come from?
Ollie Robinson gets one to nip back sharply and Sam Hain is castled playing down the wrong line.
So that dropped catch cost only one run.
Keith Barker to bat next.
Worcestershire 94 v Essex 391-6
Ravi Bopara brings up his 29th first-class century and his second of this season.
The former England all-rounder - dropped on 45 - took 212 balls to get there.
Sussex v Warwks 417-4
Ollie Robinson finds the edge...
Ben Brown, possibly wrong-footed, goes for a one-handed catch but can't hold on.
How many runs will that cost?