First day of seven fixtures across the two divisions
Div One: Gloucs v Yorks, Kent v Lancs, Som v Essex and Surrey v Hants
Somerset dismissed for just 109 against Essex
Alastair Cook passes 25,000 first-class career runs
Ollie Pope makes century for Surrey against Hampshire
Div Two: Derbys v Sussex, Durham v Leics and Notts v Glam
James Anderson and Stuart Broad sit out this round of fixtures
Zak Crawley, Jack Leach and Craig Overton return for first time since England's tour of West Indies
Van Buuren c Lyth b Patterson 21 (Glos 99-3 v Yorkshire)
Three down at Bristol now as Yorkshire captain Steven Patterson removes his opposite number Graeme van Buuren!
Patterson has kept it tight so far, going for just 11 runs in 12 overs and now he finds the edge as Adam Lyth, at second slip, takes his second catch of the day.
Miles Hammond heads out to the middle to join Marcus Harris.
Derbyshire 162-2 v Sussex
He threatened to score a couple of them against Middlesex at Lord's last week, but this time Shan Masood does reach a century for Derbyshire against Sussex.
The Pakistan Test international gets to three figures off 121 balls with 12 fours.
Gregory c A Cook b Harmer 4 (Somerset 79-7 v Essex)
Image source, Rex FeaturesAnd it took Simon Harmer just six balls to make an impact!
Lewis Gregory edges one that turns and bounces a bit more at the end of his first over and Alastair Cook takes the simple catch at slip.
Somerset 79-6 v Essex
Simon Harmer time once again for Essex.
The spinner is back in county colours after his recent exploits for South Africa in New Zealand and against Bangladesh.
Doesn't usually have to wait as long as 37 overs until he gets a go, but such has been the display so far from Essex's seamers.
Lewis Gregory (4 not out) and Tom Lammonby (31 not out) the first to face him for Somerset.
Patel c Abbas b Fuller 58 (Surrey 119-2 v Hampshire)
James Fuller really has the knack of coming on and taking wickets straight away!
His second delivery is slammed by Ryan Patel straight to Mohammad Abbas at long leg and it's a very welcome wicket for the visitors.
Patel had added 80 with Hashim Amla, who's now joined at the wicket by Ollie Pope.
Glos 86-2 v Yorks
Marcus Harris only stepped off the plane last weekend and Gloucestershire will be delighted to have him out in the middle at Bristol.
The Australian left-hander has just registered a maiden 50 for his new county, clipping Jordan Thompson for two to bring up that landmark from 110 balls.
Skipper Graeme van Buuren has joined Harris at the crease after lunch and is currently 12 not out.
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Kent v Lancashire 133-3
Lancashire continuing to build useful partnerships at Canterbury.
Steven Croft (31 not out) and skipper Dane Vilas (34 not out) have added 53 so far for the fourth wicket after losing Josh Bohannon before lunch.
Going along at a decent rate too.
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Somerset 74-6 v Essex
Image source, Rex FeaturesEssex once again miss a chance to dismiss Somerset opener Tom Lammonby.
He was dropped on six earlier by Simon Harmer off Sam Cook at second slip, but this time it's Cook himself who misses the chance.
It was however, a very fiercely-struck drive in his bowling follow-through for a possible caught and bowled.
Got two hands on it above his head, but it didn't stick and the Essex seamer will feel he should've clung on.
Lammonby survives on 27 this time.
Surrey 102-1 v Hants
Image source, Getty ImagesBeautiful cover drive by Ryan Patel brings up his half-century from 99 balls, crashing Kyle Abbott to the boundary.
It's the Surrey opener's sixth first-class 50 overall and already his second of the season.
That also lifts the Surrey total into three figures - and they're only one wicket down, although Hashim Amla might have gone in the previous over, slashing outside off stump at Mohammad Abbas.
Liam Dawson was unable to hold the chance at second slip.
Durham 85-3 v Leicestershire
Durham lost Alex Lees before the start through injury, now Leicestershire have also had a slice of bad luck it seems...
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Davies c Wheater b Snater 3 (Somerset 70-6 v Essex)
And now Somerset's task has got even stiffer...
Steven Davies becomes their sixth wicket to fall and probably to the loosest shot of all so far.
He edges Shane Snater to give Adam Wheater another catch, but it was high and wide outside his off stump and arguably a ball he didn't need to be playing.
Somerset 70-5 v Essex
Anthony Gibson
BBC Radio Somerset at Taunton
Another dismal morning for Somerset, courtesy of another top-order batting collapse.
Hard to judge the pitch from our vantage point, but however much there is in it for the bowlers, Essex's Sam Cook and Mark Steketee have made the most of it.
Tom Lammonby (27 not out) is hanging in there, largely strokeless but utterly determined not to give it away.
Right then - time to resume after the lunch interval. Stay with us to see how these games develop during the afternoon!
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News from elsewhere around the cricketing world today in case you've not seen, is confirmation from England women's bowler Anya Shrubsole of her retirement from international cricket.
Read more in our story below.
England bowler Anya Shrubsole, a key part of England's 2017 World Cup triumph, retires from the international game.
Read MoreNottinghamshire 108-2 v Glamorgan
Dave Bracegirdle
BBC Radio Nottingham at Trent Bridge
Image source, Rex FeaturesHonours are just about even after a very watchable morning.
Put in, Notts ticked along at more than four-an-over throughout the session.
Sam Northeast featured in two of the three major moments of the morning, catching Ben Slater off Michael Neser, before spilling Ben Duckett just before lunch.
Haseeb Hameed was particularly unlucky. The England opener was unwittingly run out at the non-striker’s end as Duckett’s drive flicked off the fingers of bowler James Weighell and onto the stumps.
Joe Clarke announced his intentions by pulling David Lloyd for the first six of the contest and he and Duckett have already added 39 for the third wicket.
Derbyshire 108-2 v Sussex
Adrian Harms
BBC Sussex at Derby
Image source, Rex FeaturesA very good morning for Derbyshire and in particular Shan Masood, who has batted imperiously scoring his third half-century of the season.
This looks a very good pitch, and both Billy Godleman and Brooke Guest looked furious with themselves as they were both dismissed caught down the leg side.
Sussex have used six bowlers so far in an attempt to stem the flow of runs, but their injury-hit seam attack, Steven Finn apart, has struggled to bowl a consistent line and length.
Image source, Getty ImagesDivision One:
Bristol: Gloucestershire 58-2 v Yorkshire - Yorkshire won toss and elected to bowl
Canterbury: Kent v Lancashire 89-3 - Lancashire won toss and elected to bat
Taunton: Somerset 70-5 v Essex - Essex won toss and elected to bowl
The Oval: Surrey 83-1 v Hampshire - Hampshire won toss and elected to bowl
Division Two:
Derby: Derbyshire 108-2 v Sussex - Derbyshire won toss and elected to bat
Chester-le-Street: Durham 65-3 v Leicestershire - Leicestershire won toss and elected to bowl
Trent Bridge: Nottinghamshire 108-2 v Glamorgan - Glamorgan won toss and elected to bowl
And to see those scores in more detail, visit our scorecards page.
Darren Gough joins Kevin Howells
Tune in to BBC Radio 5 Sports Extra now to join Kevin Howells in conversation with former Yorkshire and England fast bowler Darren Gough.
Gough is now interim managing director of Yorkshire cricket following significant change both on and off the field at the county during the winter.
You can tune in and listen on your DAB digital radio, the BBC Sounds app and also by tapping or clicking the play icon at the top of this page.
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Surrey 83-1 v Hants
Image source, Getty ImagesSurrey won't be too unhappy with that opening session as they tuck into their lunch, having been put in by Hampshire.
Ryan Patel is looking good on 39 not out, with Amla - despite an uncertain start - alongside him on 15 not out.
Rory Burns' wicket is the only one to fall so far, with Ian Holland having the left-hander caught in the slips for 21.
Kent v Lancashire 89-3
And that's lunch at Canterbury as well.
Honours even you might say after Lancashire opted to bat first. Steven Croft (16 not out) and Dane Vilas (8 not out) head to the Pavilion for the Red Rose.
Nathan Gilchrist with two and Matt Milnes in the wickets for Kent so far.