Mark Stoneman makes 165 on Surrey debut
New Yorkshire captain Gary Ballance out for 120
Yorkshire's Ben Coad takes 5-18 to leave Hants 58-5
Northants skittle Glamorgan for 101
Stuart Broad takes 3-45 for Notts
Lancs' Haseeb Hameed out for 47
Leicestershire 50-3 v Notts
Nottinghamshire wicketkeeper Chris Read has just taken his 1,000th first-class catch! How hard must his hands be?!
Leicestershire's Harry Dearden is the unlucky batsman on the end of the record - edging Harry Gurney behind.
Yorkshire 59-2 v Hampshire
Both Yorkshire openers are now gone.
Adam Lyth attempts to leave one from Gareth Berg, but somehow manages to feather the ball through to wicketkeeper Lewis McManus.
He's gone for 30 and new captain Gary Ballance strolls to the middle.
Northants v Glamorgan 26-6
Nick Webb
BBC Radio Wales
Jacques Rudolph has been left regretting his brave decision to bat first at Northampton as six wickets have crashed with only just over an hour played.
Rory Kleinveldt trapped both Nick Selman and David Lloyd lbw without scoring, before Rudolph edged Ben Sanderson to slip for 9.
Colin Ingram then followed for 6, caught behind in Nathan Buck's first over for his new county.
Buck then dismissed Chris Cooke and Kiran Carlson in successive deliveries to put the away side in dire straights.
Image source, Getty ImagesEssex v Lancashire 50-2
Liam Livingstone 's bright and breezy innings for Lancashire is over.
Aaron Beard tempts him into a wild cover drive, he nicks it, the ball is parried up in the air by Tom Westley at second slip and then snaffled by a diving Varun Chopra.
It was a comedy of errors but Livingstone has to go.
Who will shine in 2017?
Charlie Huntingford: Middlesex's Tom Helm has to be my pick for the 2017 County Championship season if he can stay fit.
William Orr: Could be Dom Sibley's big year but my tip is Liam Livingstone to make the Ashes tour.
Image source, Getty ImagesEvery ball covered
It's absolutely glorious at The Oval, where Surrey are 55-0.
To tune into ball-by-ball radio commentary, click on the audio tab at the top of this page.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Kent v Gloucestershire 33-1
Bob Hunt
BBC Radio Gloucestershire
Four fiery overs from David Payne and Liam Norwell resulted in Gloucestershire's first wicket of the season, with Daniel Bell-Drummond smartly caught by George Hankins at third slip off Norwell for 11.
Surrey 43-0 v Warwickshire
Mark Church
BBC Radio London commentator
Image source, Getty ImagesA solid start from Mark Stoneman and Rory Burns for Surrey. Both have been tested by Keith Barker and Chris Wright but runs have started to flow from the bats of the Surrey opening pair.
Burns has played a couple of lovely shots off the back foot but there is enough there to keep the bowlers interested.
Essex v Lancashire 41-1
A good crowd is in at Chelmsford. And they're watching a bit of a Haseeb Hameed masterclass at the moment.
The young Lancashire opener smacks Aaron Beard to the point boundary to move to 16.
He looks in absolutely no bother as per usual.
Image source, Getty ImagesNorthants v Glamorgan 14-3
Alex Winter
BBC Radio Northampton sport
Alex Wakely said his side were "fed up of being average" in the County Championship ahead of the new season.
The way they've started here suggested they are determined to do something about it. Rory Kleinveldt and Ben Sanderson have not given an inch in their opening bursts and there has been just enough with the new ball for early inroads.
One might have to question the decision of Jacques Rudloph, the Glamorgan captain, to bat first.
Yorkshire 41-1 v Hampshire
Wicket at Headingley! Fidel Edwards sends Alex Lees ' off stump cartwheeling.
Australia batsman Peter Handscomb joins Adam Lyth in the middle.
Surrey 35-0 v Warwickshire
Surrey were former England captain Michael Vaughan's tip for the title before the season and they're off to a decent start at The Oval against Warwickshire.
Rory Burns is on 22, while Durham import Mark Stoneman has just hit his second boundary to move to 13.
Scott Borthwick and Kumar Sangakkara are the next men in for Surrey - it could be a long afternoon for the visitors.
Essex v Lancashire 32-1
Looks like Essex paceman Jamie Porter likes bowling April.
Meanwhile at Chelmsford, Lancashire and England opener Hasseb Hameed strokes Neil Wagner through the covers for his second boundary and moves to 12.
Glorious shot from Hameed.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
App users may need 'view more' to see this Tweet.
Yorkshire 39-0 v Hampshire
Yorkshire openers Alex Lees and Adam Lyth are going along at six an over at Headingley!
Lyth has also just pulled Hampshire quick Fidel Edwards for six. Calm down lads, it's a long season ahead.
Leicestershire 25-2 v Notts
I gave him the big build up and now he's among the wickets.
Nottinghamshire seamer James Pattinson traps Colin Ackermann lbw for seven and Leicestershire are in early trouble in Division Two.
Elsewhere, Kent are 25-0 against Gloucestershire and Glamorgan have slumped to 9-3 at Northants.
Big Rory Kleinveldt has a couple of wickets for the hosts there.
Image source, Getty ImagesWho will shine in 2017?
Joe Suffy: Sam Hain. A wonder of modern cricket. Or young Alex Mellor could get a few runs.
Neil Spofforth: Cricket season is back! I'm confident of a good one for a new look Yorkshire.
Neil Yelland: I'm tipping Jofra Archer for a big year with Sussex. Big lad and quick to boot.
Essex v Lancashire 19-1
All that anticipation ahead of the new season and then you're out for five...
Image source, Rex FeaturesLeicestershire 18-1 v Nottinghamshire
Image source, Getty ImagesJames Pattinson is making his Nottinghamshire debut this morning, taking the new ball alongside Stuart Broad at Grace Road.
But despite this being his first County Championship fixture, the Australian fast bowler may already feel at home.
His older brother Darren won a Test cap for England while playing for Notts back in 2008, while his father John also spent time as a youngster at Nottingham Forest nearly 40 years ago.
"It is a bit bizarre," Pattinson junior told BBC Nottingham Sport. "I can't imagine there's many siblings who've done that before."
Essex v Lancashire 14-1
I do like an 'arty' photo - I think this one from Chelmsford falls into that category.
Liam Livingstone is the new batsman for Lancashire and is off the mark second ball with a boundary.
Image source, Getty ImagesEssex v Lancashire 10-1
And now we have our first wicket of the campaign in Division One.
Lancashire opener Alex Davies nicks Essex paceman Jamie Porter behind and wicketkeeper Adam Wheater takes a fine low catch.