Yorkshire beat Somerset by an innings and 33 runs
Division One: Notts v Lancs, Warwickshire v Hants, Yorks v Somerset
Division Two: Durham v Glamorgan, Essex v Glos, Northants v Surrey
Division Three: Derbys v Leics, Kent v Worcs, Sussex v Middlesex (day one)
Nottinghamshire 272 & 16-0 v Lancashire 168
A good start to the innings from Nottinghamshire's openers.
Ben Duckett is comfortable on 10, Ben Slater is unbeaten on six.
Notts are 16 without loss from seven overs, a lead of 120.
Image source, Rex FeaturesNotts 272 & 15-0 v Lancashire 168
Scott Read
BBC Radio Lancashire
Lancashire are without Saqib Mahmood.
He's left the ground for further assessment and treatment following an injury in the first innings.
Mahmood went off the field halfway through an over holding his left side.
He came out to bat with a runner earlier today.
Sussex v Middlesex 244-0
Sam Robson and Mark Stoneman have now put on Middlesex's best opening stand against Sussex.
It eclipses the 241 shared by Plum Warner and Harry Lee at Lord's in 1920.
Amazing stuff at Hove.
Yorkshire 300-9 v Somerset 134
Matt Fisher hits the first ball of Tom Abell's next over for four to bring up Yorkshire's 300 and a third batting bonus point.
Every point could be crucial in this four-game shoot out to determine the county champions.
Willey c & b de Lange 23 (Yorkshire 296-9 v Somerset 134)
One to go for Somerset. But is it too late?
David Willey slices and attempted pull shot into the air and Marchant de Lange takes the catch off his own bowling.
The first-innings lead stands at 162 as last man Steven Patterson comes in.
Plenty to tell you about in Division Three.
Middlesex openers Mark Stoneman and Sam Robson have both brought up their centuries on the first day at Sussex. Middlesex are completely dominant on 228-0.
But Leicestershire nightwatchman Chris Wright didn't manage to reach three figures. He was out for a career-best 87 at Derby with Leicestershire now on 447-6.
Kent are still piling on the runs against Worcestershire. The hosts are 350-8 at Canterbury and lead by 217.
Fuller b Miles 0 (Warwickshire 116 v Hampshire 89 & 173-7)
Two in the over for Craig Miles.
James Fuller has a pair as he turns around to see his stumps cartwheel into the air.
Hampshire lead by 146. Warwickshire can smell blood.
Thompson c Lammonby b De Lange 57 (Yorkshire 285-8 v Somerset 134)
Jordan Thompson goes.
The ball after taking Yorkshire's lead past 150 with a boundary, he cuts Marchant de Lange straight to Tom Lammonby at point.
Matthew Fisher joins David Willey in the middle.
Nottinghamshire 272 & 0-0 v Lancashire 168
Nottinghamshire openers Ben Slater and Ben Duckett come out to bat.
The hosts lead by 104 at Trent Bridge.
Vince c Lamb b Miles 48 (Warwickshire 116 v Hampshire 89 & 173-6)
Hampshire's rock is gone.
There's only one man in the deep on the leg-side and James Vince has found him.
The England man can't get over the short ball, pulling it to a fielder when he looked nailed on for the first half-century of this game.
Advantage Warwickshire.
Northants 125-7 v Surrey 252
Now here's something you don't see every day...
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Lavelle c Moores b Fletcher 32
Luke Fletcher has George Lavelle feathering one behind.
And that's the innings. Fantastic bowling from Nottinghamshire sees them have a first-innings lead of 104.
Brett Hutton leads the hosts off after taking 5-62.
Bailey lbw b Paterson 0 (Notts 272 v Lancashire 164-9)
Another one bites the dust.
Tom Bailey lasts three balls before Dane Patterson pins him leg before.
Saqib Mahmood is the final batter. He walks out with a runner after picking up a muscle injury while bowling.
Bad news that for both Lancs and England.
Croft b Paterson 24 (Notts 272 v Lancashire 156-8)
Steven Croft's off-stump goes cartwheeling to the keeper.
A brilliant delivery from Dane Patterson after Croft had started to look set.
Lancashire trail by 116.
Yorkshire 271-7 v Somerset 134
Half-century for Jordan Thompson as Yorkshire's lead continues to grow.
What have Somerset got left?
Durham have a fourth batting point, racing past 350 straight after lunch. They're now on 374-7, leading Glamorgan by 277 runs.
Essex have been bowled all out for 276, giving them a lead over Gloucestershire of exactly 200 runs. The visitors have started their second innings much better than their first. They are 25-0 after six overs.
And Northamptonshire are ticking towards Surrey's first-innings total, the hosts are 117-6, 135 runs behind.
Dawson lbw b Norwell 3 (Warwickshire 116 v Hampshire 89 & 156-5)
This game!
I have no idea who's ahead. The win predictor must be 50-50.
Liam Norwell has his third, tricking Liam Dawson with an in-swinger.
Hampshire lead by 129, with five wickets in hand.
Yorkshire 262-7 v Somerset 134
This game is getting away from Somerset and quickly.
Tom Lammonby bangs one in short, Jordan Thompson swivels and pulls him for six.
Thompson's up to 44 and the lead is 128.
Image source, Rex FeaturesKent batsman Jack Leaning has just fallen for 97 to Worcestershire paceman Dillon Pennington (4-70).
But Kent are still in complete control at 306-6 and a lead of 173.
Leicestershire nightwatchman Chris Wright is closing in on an extraordinary century of his own. He has 83 in their 401-5 at Derbyshire.
And Middlesex are continuing on their merry way on the opening day at Sussex. 164-0 with Sam Robson and Mark Stoneman looking in superb touch.
Yorkshire 244-7 v Somerset 134
Shot!
Tom Lammonby strays down the leg-side and Jordan Thompson flicks him for six. Pure timing.