Keith Barker takes career-best 7-46 as Hampshire bowl out Notts for 155
Tom Lammonby scores 100 as Somerset follow-on against Lancashire
Yorkshire 50-3 at close, chasing target of 224 against Warwickshire
Former England captain Alastair Cook out for 165 for Essex
Hassan Azad and Lewis Hill hits centuries for Leics against Sussex
Duckett c Alsop b Barker 9 (Hampshire 226 v Notts 29-2)
First ball of the day - Ben Duckett is gone.
It's a nothing leg-side delivery by Keith Barker, but in trying to work it away, the left-hander only manages a thin edge and keeper Tom Alsop takes a sprawling catch.
Right then. Enough preamble. Time for action.
There is ball-by-ball coverage for you as usual today today, courtesy of the BBC 5 live sports extra and BBC local radio teams.
Choose a commentary stream from the promos at the top of the page and we will keep you apprised of what is happening at the other grounds with regular text updates.
Hampshire 226 v Notts 29-1 - play starts 10:30
Image source, Rex FeaturesDivision One leaders Nottinghamshire have plenty of work to do despite running through Hampshire's batting line-up on the opening day at the Ageas Bowl.
Bowling coach Kevin Shine insisted that the Notts attack had allowed the home side to achieve a "par score".
"We bowled really well in the first session but in the second and third session we didn't really bowl at the stumps as much as we would have wanted to," he said.
"It is one of those wickets where you have to work hard whether you are batting or bowling and your concentration has to stay up the whole time."
D1: Somerset v Lancashire 364-8 - play starts 10:30
Image source, Rex FeaturesLuke Wells was understandably thrilled after hitting his first century for Lancashire on the opening day at Taunton.
"To finally get the three figures is great," the former Sussex batsman told BBC Radio Lancashire.
"I've felt good all year, I know I've been playing how I'd like to play. I've had a lot of starts, a lot of 30s and 40s. I know I've been playing well so I wasn't fretting. But to get the three figures is obviously a great feeling.
"It was a strange day. There was enough there, it is a free-scoring ground. I don't know what a par score is to be honest."
D1: Yorkshire 95-8 v Warwickshire 155 - play starts 10:30
Image source, Rex FeaturesYorkshire captain Steven Patterson admitted his side were "behind where we want to be" following a hectic opening day against Warwickshire.
He took 4-34 - reaching 450 first-class wickets in the process - to help bowl the Bears out for 155, but Yorkshire then slumped to 95-8 in reply.
A fighting 51 not out by Gary Ballance saved them from total collapse and Patterson said: "We did a decent job with the ball....but we haven't played well enough with the bat."
On his personal achievement, he added: ""I didn't realise I'd taken 450 wickets, to be honest. It's just nice to contribute again after taking no wickets at Scarborough and against Hampshire."
A bit of a mixed bag today, but let's hope our nine Championship games will be unaffected. For more detail on the Monday forecast, here's BBC Weather's Simon King.
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After first day's play
Division One
Ageas Bowl: Hampshire 226 v Nottinghamshire 29-1
Nottinghamshire trail by 197 with 9 wickets standing
Taunton: Somerset v Lancashire 364-8
Headingley: Yorkshire 95-8 v Warwickshire 155
Yorkshire trail by 60 with 2 wickets standing
Division Two
Cardiff: Glamorgan 264-6 v Gloucestershire
Northampton: Northamptonshire 183 v Durham 108-4
Durham trail by 75 with 6 wickets standing
Kia Oval: Surrey v Essex 299-3
Division Three
Derby: Derbyshire 1-1 v Kent 285
Derbyshire trail by 284 with 9 wickets standing
Leicester: Leicestershire v Sussex 310-4
Lord's: Middlesex 144 v Worcestershire 113-8
Worcestershire trail by 31 with 2 wickets standing
Image source, Getty ImagesCounty Championship, day two. How are things looking in the title race?
Taking into account bonus points achieved on Sunday, we think the Division One standings are now something like this:
There should be lots of great action today and don't forget that in Division Two, Sir Alastair Cook will resume on 140 not out for Essex against Surrey.
Welcome to our coverage. Play starts at 10:30.