Get Involvedpublished at 12:05 British Summer Time 1 May 2016
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Michael Carberry hits century for Hants
Alex Hales out for 36 against Yorkshire
Leics bowl out Sussex for 163
Alastair Cook passes 50 for Essex
Paul Grunill
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Nottinghamshire 77-1 v Yorkshire
Joe Root cuts England team-mate Alex Hales' first innings of the summer short by taking a catch at short cover. Jack Brooks is the successful bowler for the defending champions, who will be mighty relieved to have separated Nottinghamshire's opening pair. Hales hit eight fours in his 53-ball knock, but didn't go on - what impact, if any, will that have on his chances of keeping his Test place?
BBC Radio Nottingham's Dave Bracegirdle:
"The wheel of fortune turned at Trent Bridge for Jack Brooks. After being hit out of the attack after two expensive overs, he struck with the first ball of his return with Alex Hales hitting straight to Joe Root."
Surrey 39-1 v Durham
England's Ben Stokes produces a beauty to break Surrey's opening partnership, nipping back off the seam and knocking out Rory Burns' leg stump. Kumar Sangakkara - the best batsman in the world, according to skipper Gareth Batty - walks to the middle for the home side.
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I asked for some suggestions for cricket-themed musicals - my colleague Steve Marshall just suggested Waugh of the Worlds - and you are also setting a very high standard....
County Championship Division One
BBC Somerset's Anthony Gibson:
"Long day ahead for Somerset's bowlers and fielders on what looks ominously like a traditional Taunton shirt-front. Fab view from new commentary box Lancs 39-0 in 14 overs."
Derbyshire 43-0 v Northamptonshire
BBC Radio Northampton's Alex Winter at Wantage Road:
“Bright and sunny morning with Derbyshire contesting the toss and having won it, making a great start.
“Five boundaries crashed into the hoardings around the short boundary in the first 21 balls.
“Northamptonshire have one of their four injured players back, with Steven Crook recovered from a pectoral injury."
While on the subject of players returning from injury, new Derbyshire captain Billy Godleman is leading the side for the first time in a Championship game - and is at the crease, 28 not out after 11 overs.
Nottinghamshire 55-0 v Yorkshire
Notts openers Alex Hales and Steven Mullaney are going at a decent clip at Trent Bridge. David Willey got through his first five overs for Yorkshire at a cost of 14 runs, but the next sees Mullaney clout him into the Fox Road stand for six as the home side's total goes past 50. And that is his lot for the time being as Liam Plunkett is called into the attack.
With the sunglasses and hat, Worcestershire and England's Moeen Ali was sending out mixed messages before play got under way at New Road...
Hampshire 11-1 v Middlesex
Jimmy Adams is back in Hampshire's side after recovering from injury, but only lasts until the first ball of the sixth over at the Ageas Bowl as he is caught at third slip. His departure brings in James Vince who, according to my morning newspaper, could be the "new Michael Vaughan". Is a Test cap against Sri Lanka on the horizon for the Hants skipper?
As well as the start of the latest round of County Championship games, there's quite an important football match at Old Trafford today. If Leicester City beat Manchester United, they will be Premier League champions - and you can follow the build-up and all the match action here.
Should Claudio Ranieri's men do it, I wonder whether that would inspire Leicestershire to win promotion in the Championship this summer. Any crystal-ball gazers out there who can let me know?
Sussex 11-1 v Leicestershire
And just as Lizzy has extolled the virtues of the pitch at Hove (see below), there's the first wicket. Chris Nash has been in fabulous form at the start of the season but he edges Ben Raine to second slip where Angus Robson makes no mistake with the catch. Don't forget that Leicestershire, who in recent seasons have been serial table-propper-uppers, begin this match second in Division Two.
Sussex 11-0 v Leicestershire
BBC Sport's Lizzy Ammon:
"Good morning from Hove where the sun is out and the ground is looking glorious. The pitch looks an absolute belter (pic below) so Mark Cosgrove decided he didn't want to bowl first. Sussex won the subsequent toss and unsurprisingly decided to bat first.
"They've started solidly but there's some pleasing pace and bounce in the pitch which the Leicestershire seam attack are exploiting well."
Essex 16-1 v Worcestershire
Alastair Cook is at the crease for Division Two leaders Essex at New Road, but soon loses opening partner Nick Browne, who is caught behind off New Zealand's Matt Henry from the final ball of the third over.
Nottinghamshire 18-0 v Yorkshire
As mentioned previously, Alex Hales and Joe Root are in action at Trent Bridge, but it should not be overlooked that David Willey is making his Championship debut for Yorkshire.
The former Northants all-rounder gets his chance because Ryan Sidebottom is injured and his first over costs six runs, including a boundary for Hales.
Jack Brooks takes the new ball at the other end, and Steven Mullaney - ignoring the old adage about playing yourself in - finds the rope three times to give Notts a racing start.
BBC Radio Nottingham's Dave Bracegirdle:
"Notts have got off to a flyer at Trent Bridge after being asked to bat first. David Willey, on his Yorkshire debut, bowled the opening over of the match and conceded a single to Steven Mullaney from his first ball and followed it up by spearing down a wide, before Alex Hales got his season up and running with an elegant four backward of point."
Glamorgan 0-1 v Kent
And the first wicket of the day goes to.....Kent's Matt Coles. His fourth delivery finds the edge of James Kettleborough's bat and keeper Adam Rouse - deputising for Sam Billings, who is away at the IPL - takes the catch. Not the start Welsh cricket supporters would have wanted.
Pace bowler Ravi Rampaul has done really well for Surrey so far this summer - with 14 wickets in two games at a cost of just 18.07 each. However, an ankle injury has put him out of their Division One game against Durham, so opportunity knocks for South African Matthew Pillans.
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Now we want you to part of today's coverage as well, so feel free to get in touch about any cricket issues silly or serious.
Earlier on (see 10:25 entry), I mentioned the musical Camelot - and I'd like some suggestions from you for cricket-themed musicals.
Sunset Boonlevard and Footittloose are two I came up with, and my colleague Gary Smee excelled himself with Phantom of the Bopara. Can you do any better? I do hope so.
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Latham and Hugh Bernard make debuts for Kent at the Spitfire Ground, on-loan Harry Podmore comes in for Glamorgan in place of Timm van der Gugten.
As usual, BBC Sport will have commentary on every ball bowled in the fourth round of matches online via the BBC Sport website and on the BBC Sport App.
To listen to your chosen team, click on the live coverage tab at the top of this page.
While you're waiting for today's action to start at 11:00 BST, if you want to want out more about what goes on in a BBC commentary box, click here.
Worcestershire v Essex (play starts 11:00 BST)
In undoubted match of the round in Division Two sees leaders Essex take on Worcestershire at New Road.
It is England captain Alastair Cook's final appearance for the visitors before he focuses on international duty and he has already contributed 333 runs, including two centuries, to their cause.
For the home side, Cook's England team-mate Moeen Ali will look to build on last week's unbeaten 136 against Gloucestershire and perhaps persuade the selectors that he deserves a move back up the order in Tests following the retirement of James Taylor.