Fergus O'Neill takes 5-51 for leaders Notts against Hampshire
Yorkshire's Jonny Bairstow and Adam Lyth out for 120 and 141 at Headingley
Olly Hannon-Dalby claims 5-53 for Warwickshire against Glamorgan
Tom Abell and Craig Overton hit centuries as Somerset declare on 526-8 against Sussex
Matthew Potts takes 6-92 for Durham against Kent; Emilio Gay out for nought in reply
Derbyshire's Ben Aitchison follows his five wickets with 112 for Derbyshire at Lord's
Matt Taylor takes 5-36 as Gloucestershire bowl out Northants for 127
Somerset 455-6 v Sussex
Spin at both ends now. Jack Carson is blowing in tandem with James Coles.
Lewis Gregory is down the pitch, trying to turn the ball away but there's no run.
He plays across the line on the back foot for one - and there's the Somerset 450 in the 120th over.
Craig Overton is down the pitch to smash the spinner past Henry Crocombe at long on for four. He gets one more run to square leg.
He's on 91 not out.
Malik c Tribe b Hadley 4 (Warwickshire 123-6 v Glamorgan 360)
Zen Malik is the next to go!
Ryan Hadley has a wicket now, tempting Malik into playing, finding the edge and Asa Tribe takes a good low catch at second slip.
Warwickshire are in bother here. Glamorgan are on top and will like the idea of having the option of a follow-on to exercise.
Middx 2-0 v Derbys - trail by 197 runs
A couple of leg byes to kick us off in Middlesex's second innings and the home side are under way with the first delivery.
Zaib c Taylor b Miles 19 (Gloucs 154 v Northants 86-6)
That dropped catch earlier has not cost a single run as Saif Zaib falls in identical fashion to Luke Procter!
A short ball from Craig Miles - pulled to Matt Taylor at deep square.
Northants in danger of falling behind on first innings and George Bartlett joins James Sales in the middle.
Middlx 0-0 v Derbys - trail by 199 runs
The sun is beginning to peek through the clouds over the home of cricket.
Middlesex will begin their second-innings, 199 runs behind, very shortly.
Essex 281-8 v Leicestershire 333
Image source, ShutterstockThe floodlights are on but the umpires aren't happy and with nine overs to go to the new ball - and 18 left in the day - they have taken the teams back to the dressing rooms.
Wiaan Mulder is 70 not out for Essex and Simon Harmer has 33 - they have added 74 in 24 overs since the dismissal of Michael Pepper.
Abell c Clark b Carson 119 (Somerset 443-6 v Sussex)
Tom Clark has fallen awkwardly in the field chasing down a ball but he appears to be OK to continue.
Jack Carson bowls to Tom Abell - who has slapped the ball straight to Clark, lofting a drive to the leg side.
a wonderful innings ends and Lewis Gregory to bat next.
Following Durham's win over Somerset, Warwickshire have now completed a three-wicket victory over Yorkshire at Scarborough.
The White Rose posted a total of 238 all out, thanks to Jess Jonassen's superb 110, but the visitors chased the target down despite the Australian following her batting exploits by taking 3-32.
Chloe Brewer top scored for the Bears with 56 as they reached 239-7 with 16 balls to spare.
Gloucs 154 v Northants 85-5
Saif Zaib is drawn into a loose drive facing Will Williams.
Edged to second slip, who can't quite hang on. A bit of movement and some extra bounce there.
That was quick and slightly to the left of Cam Bancroft, but it was certainly catchable.
We mentioned earlier that New Zealander Nick Kelly will replace injured Jake Weatherald in Leicestershire's team for the remainder of their game at Chelmsford.
He's arrived!
Image source, ShutterstockProcter c Taylor b Miles 38 (Gloucs 154 v Northants 85-5)
The worst of the weather has moved from west to east - which is good news for this game at any rate.
It's almost pleasant here now. There's still encouragement for the bowlers as Luke Procter takes one hand off the bat facing a ball that takes off and leaves him on a length.
Short ball now... pulled and taken by Matt Taylor at long leg!
Craig Miles strikes early on the resumption.
Procter played that on or just above the eye line and he has to depart.
James Sales is in.
Kent 523 v Durham 143-4
The umpires are now happy enough about the light to allow Kent to use one of their seamers - and Matt Milnes is that man.
Kent have plenty of runs in the bank but would love to break this partnership.
Barnard lbw van der Gugten 10 (Warwickshire 115-5 v Glamorgan 360)
Glamorgan have their first wicket of the evening session - and Timm van der Gugten has claimed the plum wicket of captain Ed Barnard.
He plays around a delivery which does nip back in and the strong appeal is justified.
Van der Gugten, into his 14th over, has eight maidens and two wickets to put his side in the driving seat.
Gloucs 154 v Northants 85-4
Craig Miles has five balls left to complete a rain-disrupted over and he'll bowl to Luke Procter.
The Northants captain takes guard on 38 not out.
Saif Zaib has 19. The innings deficit is 69 and runs are critical on a tough, seaming wicket.
Somerset 428-5 v Sussex
An ultra rare play and miss from Tom Abell, facing Henry Crocombe - who bowls a good line outside off and nips the ball away.
Abell picks up a single through point next ball.
Yorks 486 v Surrey 17-0
More covers have been added on in the middle at Headingley.
It's looking increasingly likely that we've seen the final ball at Leeds this afternoon as rain continues to fall.
Gloucs 154 v Northants 85-4
One must always add - weather permitting.
A theoretical 28.5 overs left in the day here.
Warwickshire 115-4 v Glamorgan 360
It has been a low-key start to the evening session from Warwickshire, but Ed Barnard has just creamed a very attractive shot through the covers to the longest boundary off of the bowling Zain-ul-Hassan.
The ground-staff are currently sat on the hover cover, with a rather dark cloud on the horizon clearly in their thoughts. Play continues for now.
Essex 271-8 v Leics 333
Wiaan Mulder crashes Josh Hull through the covers for four. It's the seventh boundary of his highly impressive innings.
Somerset 425-5 v Sussex
Craig Overton takes a single off Fynn Hudson-Prentice to move to 79.
Tom Abell sees out the over with a push into the off side for one more.