We'll be back at 10:45 BST on Friday for what promises to be an exciting second day with lots of games nicely poised.
Hope you can join us then!
Post update
Group One
Durham 307-4 v Derbyshire
Warwickshire 7-0 v Essex 295
Worcestershire 305-7 v Notts
Group Two
Hampshire 292-3 v Gloucestershire
Leicestershire 233 v Somerset 53-3
Middlesex 114-3 v Surrey 154
Group Three
Kent v Lancashire 260-7
Northants v Glamorgan 324-7
Sussex 118-3 v Yorkshire 150
Stumps at Canterbury
Kent v Lancashire 260-7
After losing openers Alex Davies and Keaton Jennings cheaply, Lancashire made steady progress throughout the afternoon and evening sessions.
Josh Bohannon's 87 and Dane Vilas' 53 pushed them over 250, with Darren Stevens and Miguel Cummins the pick of the Kent bowlers with two wickets apiece.
Close of play at Edgbaston
Warwickshire 7-0 v Essex 295
Will Rhodes and Rob Yates see out four overs for Warwickshire and that's stumps on day one.
All nine games are now finished, so time to have a look at the scores...
Close of play at the Ageas Bowl
Hampshire 292-3 v Gloucestershire
A good day's work for Hampshire who end day one in a strong position thanks to centuries from Ian Holland and Tom Alsop.
It was tough for Gloucestershire who rarely troubled the Hampshire top order for long periods but Matthew Taylor's late wicket was reward for their hard work in the field.
Stumps at Leicestershire
Leics 233 v Somerset 53-3
A day dominated by the bowlers in the main comes to a close at Grace Road.
Somerset have plenty of work to do on day two to get close to Leicestershire's first-innings score.
Close of play at Lord's
Middlesex 114-3 v Surrey 154
Robbie White and Sam Robson's unbroken stand of 97 sees Middlesex through to stumps.
It could be a match-winner after Surrey were skittled for 154 and Middlesex then found themselves 17-3.
Big second morning coming up at Lord's.
WICKET
Northeast c Bracey b Taylor 24 (Hampshire 292-3 v Gloucestershire)
Matthew Taylor is rewarded for his hard work today, claiming a wicket with his 20th over, as Sam Northeast feathers one behind.
Tom Alsop (127*) is joined by night watchman Mason Crane as Hampshire look to see out the final over.
for White
Middlesex 114-3 v Surrey 154
Robbie White brings up his half-century just before stumps.
It's been a fine innings from the Middlesex batsman and put his side in the driving seat.
Close of play at New Road
Worcs 305-7 v Notts
A fine unbroken eighth-wicket stand of 89 between Alzarri Joseph (46 not out) and Ed Barnard (40 not out) has rescued Worcestershire.
The Pears collapsed from 140-0 to 216-7 but the West Indies international Joseph and all-rounder Barnard have taken the hosts past 300 at New Road.
Close of play at Sussex
Sussex 118-3 v Yorkshire 150
That's it from Hove on a day where 13 wickets fell.
Yorkshire started promisingly but after losing their first wicket with 60 on the board, they rather crumbled afterwards.
Tom Haines' unbeaten 71 has put Sussex in a good position at the end of day one but those two late wickets have given Yorkshire some hope.
Post update
Kent v Lancashire 256-7
Miguel Cummins ends Josh Bohannon's long spell at the crease.
A fast ball hits him on the pads in line with off-stump.
Bohannon's 87 has been a steady and valuable source of runs for Lancashire today.
Somerset three down
Leics 233 v Somerset 39-3
Somerset are wobbling late in the day.
James Hildreth goes with a few overs left, edging Dieter Klein to slip for five.
Close of play at Durham
Durham 307-4 v Derbyshire
Another memorable day for David Bedingham comes to a close.
The Durham batsman walks off on 170. Probably not too many drinks to celebrate his 27th birthday this evening though!
He'll have a job to do in the morning.
Essex all out
Warwickshire v Essex 295
Ryan ten Doeschate is the last man to go for the defending champions as Oliver Hannon-Dalby picks up his fourth wicket.
Tendo is out for 56. Olly Stone was also in the wickets for the Bears taking 4-89.
for ten Doeschate
Warwickshire v Essex 286-9
Ryan ten Doeschate reaches fifty for Essex with his side nine down.
He gets there with a six and a four off Olly Stone.
Can he drive his side past 300?
for Cooke
Northants v Glamorgan 317-7
Glamorgan skipper Chris Cooke plays a nice drive through a gap in the field to bring-up his second century of the campaign.
He also passes a significant career milestone of 5,000 first-class runs.
Somerset lose openers
Leics 233 v Somerset 25-2
Tom Lammonby and Tom Banton have both fallen in the space of three balls.
First Lammonby was pinned lbw by Chris Wright and Banton then went in the same manner to Dieter Klein.
WICKET
Crocombe c Tattersall b Olivier 0 (Sussex 104-3 v Yorkshire 150)
Getty ImagesCopyright: Getty Images
Is the comeback on?!
Duanne Olivier has his second wicket in quick succession as Henry Crocombe nicks behind after only three balls.
Sussex were motoring along nicely but Olivier has just checked their momentum - can he find another wicket before the day is out?
WICKET
Van Zyl c Kohler-Cadmore b Olivier 16 (Sussex 104-2 v Yorkshire 150)
Yorkshire pick-up their second wicket as Stiaan van Zyl steers Duanne Olivier's ball to Tom Kohler-Cadmore at first slip.
Van Zyl took 76 balls to reach 16, slow progress, but Tom Haines has been doing most of the scoring at the other end and is still in situ on 66 not out.
Live Reporting
Gary Smee and Steve Mather
All times stated are UK
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Durham 307-4 v Derbyshire
-
Warwickshire 7-0 v Essex 295
-
Worcestershire 305-7 v Notts
-
Hampshire 292-3 v Gloucestershire
-
Leicestershire 233 v Somerset 53-3
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Middlesex 114-3 v Surrey 154
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Kent v Lancashire 260-7
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Northants v Glamorgan 324-7
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Sussex 118-3 v Yorkshire 150
Getty ImagesCopyright: Getty Images
Latest PostPost update
That's myself and Steve done for the day.
We'll be back at 10:45 BST on Friday for what promises to be an exciting second day with lots of games nicely poised.
Hope you can join us then!
Post update
Group One
Group Two
Group Three
Stumps at Canterbury
Kent v Lancashire 260-7
After losing openers Alex Davies and Keaton Jennings cheaply, Lancashire made steady progress throughout the afternoon and evening sessions.
Josh Bohannon's 87 and Dane Vilas' 53 pushed them over 250, with Darren Stevens and Miguel Cummins the pick of the Kent bowlers with two wickets apiece.
Close of play at Edgbaston
Warwickshire 7-0 v Essex 295
Will Rhodes and Rob Yates see out four overs for Warwickshire and that's stumps on day one.
All nine games are now finished, so time to have a look at the scores...
Close of play at the Ageas Bowl
Hampshire 292-3 v Gloucestershire
A good day's work for Hampshire who end day one in a strong position thanks to centuries from Ian Holland and Tom Alsop.
It was tough for Gloucestershire who rarely troubled the Hampshire top order for long periods but Matthew Taylor's late wicket was reward for their hard work in the field.
Stumps at Leicestershire
Leics 233 v Somerset 53-3
A day dominated by the bowlers in the main comes to a close at Grace Road.
Somerset have plenty of work to do on day two to get close to Leicestershire's first-innings score.
Close of play at Lord's
Middlesex 114-3 v Surrey 154
Robbie White and Sam Robson's unbroken stand of 97 sees Middlesex through to stumps.
It could be a match-winner after Surrey were skittled for 154 and Middlesex then found themselves 17-3.
Big second morning coming up at Lord's.
WICKET
Northeast c Bracey b Taylor 24 (Hampshire 292-3 v Gloucestershire)
Matthew Taylor is rewarded for his hard work today, claiming a wicket with his 20th over, as Sam Northeast feathers one behind.
Tom Alsop (127*) is joined by night watchman Mason Crane as Hampshire look to see out the final over.
for White
Middlesex 114-3 v Surrey 154
Robbie White brings up his half-century just before stumps.
It's been a fine innings from the Middlesex batsman and put his side in the driving seat.
Close of play at New Road
Worcs 305-7 v Notts
A fine unbroken eighth-wicket stand of 89 between Alzarri Joseph (46 not out) and Ed Barnard (40 not out) has rescued Worcestershire.
The Pears collapsed from 140-0 to 216-7 but the West Indies international Joseph and all-rounder Barnard have taken the hosts past 300 at New Road.
Close of play at Sussex
Sussex 118-3 v Yorkshire 150
That's it from Hove on a day where 13 wickets fell.
Yorkshire started promisingly but after losing their first wicket with 60 on the board, they rather crumbled afterwards.
Tom Haines' unbeaten 71 has put Sussex in a good position at the end of day one but those two late wickets have given Yorkshire some hope.
Post update
Kent v Lancashire 256-7
Miguel Cummins ends Josh Bohannon's long spell at the crease.
A fast ball hits him on the pads in line with off-stump.
Bohannon's 87 has been a steady and valuable source of runs for Lancashire today.
Somerset three down
Leics 233 v Somerset 39-3
Somerset are wobbling late in the day.
James Hildreth goes with a few overs left, edging Dieter Klein to slip for five.
Close of play at Durham
Durham 307-4 v Derbyshire
Another memorable day for David Bedingham comes to a close.
The Durham batsman walks off on 170. Probably not too many drinks to celebrate his 27th birthday this evening though!
He'll have a job to do in the morning.
Essex all out
Warwickshire v Essex 295
Ryan ten Doeschate is the last man to go for the defending champions as Oliver Hannon-Dalby picks up his fourth wicket.
Tendo is out for 56. Olly Stone was also in the wickets for the Bears taking 4-89.
for ten Doeschate
Warwickshire v Essex 286-9
Ryan ten Doeschate reaches fifty for Essex with his side nine down.
He gets there with a six and a four off Olly Stone.
Can he drive his side past 300?
for Cooke
Northants v Glamorgan 317-7
Glamorgan skipper Chris Cooke plays a nice drive through a gap in the field to bring-up his second century of the campaign.
He also passes a significant career milestone of 5,000 first-class runs.
Somerset lose openers
Leics 233 v Somerset 25-2
Tom Lammonby and Tom Banton have both fallen in the space of three balls.
First Lammonby was pinned lbw by Chris Wright and Banton then went in the same manner to Dieter Klein.
WICKET
Crocombe c Tattersall b Olivier 0 (Sussex 104-3 v Yorkshire 150)
Is the comeback on?!
Duanne Olivier has his second wicket in quick succession as Henry Crocombe nicks behind after only three balls.
Sussex were motoring along nicely but Olivier has just checked their momentum - can he find another wicket before the day is out?
WICKET
Van Zyl c Kohler-Cadmore b Olivier 16 (Sussex 104-2 v Yorkshire 150)
Yorkshire pick-up their second wicket as Stiaan van Zyl steers Duanne Olivier's ball to Tom Kohler-Cadmore at first slip.
Van Zyl took 76 balls to reach 16, slow progress, but Tom Haines has been doing most of the scoring at the other end and is still in situ on 66 not out.