David Bedingham makes 79-ball 100 for Durham against Worcestershire
Hampshire's Liam Dawson takes five-for against Warwickshire
Surrey reach 185-1 at the close against Kent, with Dom Sibley 87 not out
England's Harry Brook out first ball for Yorkshire at Lord's
Marcus Harris scores 214 for Leicestershire at Derby
Ricardo Vasconcelos hits unbeaten 166 for Northants v Glamorgan
Essex 270-5 v Lancashire 146
You can't keep Nathan Lyon out of the wickets forever!
Good bowling from the Aussie from round the wicket as he bowls one that doesn't turn into Matt Critchley's pads and the batter edges it to slip.
Lancashire chipping away this afternoon.
We mentioned earlier that the 2024 Rachael Heyhoe Flint Trophy got under way this morning.
The Blaze are chasing a target of 214 to beat Central Sparks, Northern Diamonds are 117-1 after bowling out Thunder for 165, SE Stars are 121-0 after being set 274 by Southern Vipers and Sunrisers have already beaten Western Storm by eight wickets.
You can find scorecard updates here.
Somerset 314-8 v Notts 193
Disappointment for the Taunton faithful and Tom Banton.
He had passed his highest first-class score on his home ground, but there will be no hundred as he flashes Dane Paterson's ball straight to midwicket.
But 83 in this game is a fine knock and has put Somerset in a very good position.
Kent 244 v Surrey 18-0
Arafat Bhuiyan can hardly believe it.
He beats Dom Sibley with an absolute beauty, then tempts the Surrey opener into a loose shot outside off stump which again just misses the edge.
Middx 246 v Yorks 159 & 53-2
Guy Swindells
BBC Radio London
There's no sign of the floodlights coming on at the moment but it has got a little bit darker and gloomier as the grey clouds roll in above us.
There's a decent Saturday crowd in to see the two bigger names in county cricket.
#bbccricket
As we keep track of the ebb and flow of nine Championship games, news from the IPL is that Sunrisers Hyderabad have just scored a record 125 in their six-over powerplay against Delhi Capitals.
That is a barely believable 20.83 runs per over!
Kent 244 v Surrey 18-0
Rory Burns moves into double figures at Canterbury as he cuts a ball from George Garrett through backward point for four.
Few major alarms so far for the Surrey openers.
Essex 263-4 v Lancashire 146
That is a bonus for Lancashire.
Jack Blatherwick has taken some tap, but Jordan Cox slaps this latest delivery straight to midwicket.
The silence around Chelmsford sums up the surprise.
Essex 263-3 v Lancashire 146
Image source, Rex FeaturesA gorgeous cover drive from Tom Westley off Nathan Lyon is deservedly rewarded with a boundary.
His partnership with Jordan Cox is now worth 53 and Westley has 46.
Lyon has gone wicketless from his 14 overs so far.
Sussex have lost their second wicket against Gloucestershire, with Tom Clark edging Dom Goodman to the keeper for 53. The home side are 116-2, 301 in arrears.
Ricardo Vasconcelos has reached a 95-ball half-century for Northants with a straight drive for four off Zain ul Hassan. They are 115-1, replying to Glamorgan's 271 all out.
Middx 246 v Yorks 159 & 48-2
Guy Swindells
BBC Radio London
Root and Bean are steadying the buffs a bit after those two early wickets.
I've suddenly realised how plant-like those two names are.
Worcs 184 v Durham 244 & 77-2
Adam Finch is unfortunate as he squares up Scott Borthwick, but the ball runs away past slip off the edge for four runs.
He can't have any complaints, though, when he sends down a low full toss to David Bedingham and the South African dismisses it to the boundary as you would expect a player of his ability to do.
Durham lead by 137 - Borthwick is 31 not out and his partner has 18.
Hampshire 30-1 v Warwickshire 455
Ollie Hannon-Dalby has come out of the Bears attack after giving up nine runs from his seven overs, plus the wicket of Ali Orr.
The Warwickshire bowlers are keeping things very tight here as Hampshire try to eat into the big deficit.
Essex 254-3 v Lancashire 146
Jack Blatherwick is too straight to Tom Westley and you don't need to guess what happens next. Four!
Essex are now past 250, they have a first batting point and their lead is 108.
All with seven wickets still in hand.
Derbys v Leics 418-5
Image source, Rex FeaturesMarcus Harris is finally out at Derby as he tries to flick away a full length Pat Brown delivery which just swings in enough to elude the bat and bowl him.
Harris faced 303 balls, hit a six and 26 fours and has helped Leicestershire earn four batting points so far.
Ben Cox is now out there with Liam Trevaskis, who has 28 not out.
Essex 244-3 v Lancashire 146
Glenn Speller
BBC Essex sport
It went a bit quiet for Essex after the dismissal of Dean Elgar and that will not suit Jordan Cox in particular who has already shown his destructive power this season.
But just as it looked like Lancashire were getting a semblance of control Cox cuts one over the slips for four and then sweeps Lyon to the boundary.
Not wanting to miss out, Tom Westley joins in with a lovely drive to the extra cover rope.
Kent 244 v Surrey 5-0
George Garrett takes the new ball for Kent despite his batting effort earlier in the day.
After Rory Burns takes a single, he sends down a leg-stump delivery which, to Dom Sibley, might as well have gift wrap taped onto it.
The ball disappears to mid-wicket for four.
Derbys v Leics 416-4
Marcus Harris isn't so much going through the gears after reaching his double century - he's gone from second to sixth without bothering with the ones in between.
Paceman Pat Brown drops short and the Australian pulls it fiercely away for another maximum. He is now 213 not out.
Image source, Rex FeaturesSomerset 300-7 v Notts 193
Boundaries and runs are flowing for Somerset as they bring up the 300 and a second batting point.
This partnership between Tom Banton and Craig Overton is worth 54 and they have rattled along.
Middx 246 v Yorks 159 & 35-2
A leg-stump half-volley is no bother for Joe Root, who eases it away for a boundary.
He is soon into double figures as Yorkshire look to clear the 87-run first-innings deficit without further damage.