Essex beat Lancashire by an innings and 124 runs
Dom Sibley and Dan Lawrence hit 100s for Surrey v Kent
Hampshire's Fletcha Middleton scores maiden first-class hundred
Joe Clarke hits double century for Nottinghamshire
Durham defeat Worcestershire by 185 runs at Kidderminster
Middlesex beat Yorkshire by six wickets at Lord's
Karun Nair scores unbeaten 202 for Northants v Glamorgan
500 up for Northants, who are now 231 to the good against Glamorgan. Karun Nair is 137 not out and Saif Zaib has 79.
John Simpson and Danny Lamb are closing in on a 100 partnership for Sussex against Gloucestershire. They have added 95 so far - Simpson has 61 and Lamb 44 - and the total is 409-7.
Somerset 454 v Notts 193 & 209-2
Image source, Getty ImagesA 12th four gives Joe Clarke his century in 101 balls.
He has played some lovely shots and he is some form, that's his third century in as many games
He scored 104 against Essex which was followed by 105 against Worcestershire.
Hampshire 256-4 v Warwickshire 455
Emily Windsor
Hampshire batter on BBC Radio Solent
A special 100 for Fleccha Middleton - one to remember.
It'll be interesting to see how he plays now, I think once you meet that milestone, he's been playing for a long time, he knows how this pitch is playing. It'll give him a little bit more freedom and a little bit more confidence.
But what a knock that is for him and hopefully for Hampshire fans that is the first of many.
Kent 244 v Surrey 390-3
Matty Parkinson's runs conceded column now has three figures in it and Jamie Smith launches him over long-on for six.
Ben Foakes uses his feet and chips over mid-wicket - a diving effort at a catch is unsuccessful and it runs away for four.
Surrey stepping on the gas now./
Somerset 454 v Notts 193 & 205-2
Runs are starting to flow freely for Notts duo Joe Clarke and Will Young whose partnership is worth 150.
A flurry of boundaries takes Clarke to 96 and his side over 200.
Somerset skipper Lewis Gregory turns to his main man Craig Overton for a wicket.
Kent 244 v Surrey 378-3
Ben Foakes almost pays the price for an undistinguished swish outside off stump to Matty Parkinson, but the ball just misses the edge.
Playing more circumspectly, Foakes lets the ball come to him and pushes paceman George Garrett through the covers for his third boundary.
Middlesex 57-1 - target 158
You don't see too many fives in county cricket.
There's one for Max Holden to end a George Hill over and he advances to 32 not out.
Yorkshire need a couple of wickets to sew a few seeds of doubt.
Worcs 184 & 103-4 v Durham 244 & 397-5 dec
Matthew Potts finds the edge of Adam Hose's bat and Ollie Robinson takes the catch behind.
Two quick wickets again for the Pears and they are in a bit of bother now.
Worcestershire got to 49 without losing a wicket, then lost two in two balls.
Then they had a 50 partnership, only to lose two more wickets for two runs.
It's been a strange old performance.
Jason Holder is the new man in.
Hampshire 250-4 v Warwickshire 455
A bit of a setback for Hampshire as their captain James Vince departs cheaply.
With Warwickshire wicketkeeper Michael Burgess stood up Vince attempts to guide a delivery from Will Rhodes fine.
But Vince plays i too too finely and there's a thin edge straight into the gloves of Burgess behind the stumps.
The Bears are starting to open the game up at Southampton.
Hampshire 244-3 v Warwickshire 455
Image source, Getty ImagesFletcha Middleton raises his bat with a huge grin and salutes the Hampshire dressing room.
The 22-year-old has brought up his maiden first-class century with a cover drive for four off Will Rhodes
It's been a innings full of graft coming off 281 balls. He gets a big high five from Hants skipper James Vince.
Kent 244 v Surrey 368-3
Dom Sibley is gone, but Ben Foakes is a very handy replacement.
The England wicketkeeper gets off the mark with a boundary off George Garrett, back into the attack in place of Jack Leaning.
Northants are now 201 ahead against Glamorgan, advancing to 472-5 at Wantage Road, with Karun Nair 122 not out and Saif Zaib on 64.
John Simpson has completed a half-century for Sussex against Gloucestershire and is now on 56 in a score of 392-7 - they are just 25 short of parity with Gloucestershire.
Worcs 184 & 103-3 v Durham 244 & 397-5 dec
As has been the case at regular intervals during this game, the hosts lose a wicket at a time when they are going along nicely.
Rob Jones hit 39 from 23 balls after lunch and was playing very positively and confidently but all of a sudden he sends a Paul Coughlin delivery straight to Bas de Leede at backward point.
Coughlin has 3-14 from six overs and has been the difference maker for Durham.
Jake Libby, unbeaten on 27, is joined by Adam Hose.
Hampshire 237-3 v Warwickshire 455
James Fuller promoted up the order for Hampshire with the freedom to play some shots, however he's quickly back in the pavilion as Danny Briggs picks up his second wicket.
Fuller plays against the spin to a fuller ball from Briggs and slices it to Oliver Hannon-Dalby in the gully region.
Worcs 184 & 101-2 v Durham 244 & 397-5 dec
Frank Watson
BBC Hereford & Worcester
This really does seem like a different game all of a sudden.
It's just fascinating, you turn up for day three of a County Championship game when a team have got to bat through the day in order to survive and they're playing incredibly positive cricket.
The game has moved on at a real pace.
Kent 244 v Surrey 363-3
Dom Sibley takes a single off Matty Parkinson but two balls later he is gone.
The Surrey opener chips the ball back low and Parkinson claims a return catch.
The umpires consult about whether it carried and decide that Sibley has to take the long walk.
He faced 252 balls and hit a six and 16 fours. Excellent innings for his side.
Worcs 184 & 101-2 v Durham 244 & 397-5 dec
The Pears are scoring quickly and have moved over 100 - thanks to a quickfire 50 partnership between Rob Jones and Jake Libby.
Jones has hit 39 from 21 balls after lunch.
Middlesex 44-1 - target 158
Jordan Thompson overpitches with his first ball of the afternoon and Nathan Fernandes strokes it elegantly through extra cover for four.
He is 21 not out, one fewer than partner Max Holden.
Somerset 454 v Notts 193 & 155-2
Will Young's fifth four of the innings brings up his half-century.
He and Joe Clarke now have a partnership worth more than 100 and look set in conditions that are looking good for the batters at present.
Somerset 454 v Notts 193 & 155-2
Migael Pretorius is showing some encouraging signs with the ball for Somerset in the early exchanges of the afternoon session.
It looks like wicket keeper James Rew has put down a good chance to dismiss Joe Clarke but umpire Russell Warren says there was no touch on the bat anyway.
It certainly moved a fair bit if Clarke didn't get anything on it.
Pretorius then ties up Will Young who gets a glove on the ball but it drops to the ground to safety.