Postpublished at 15:58 British Summer Time 14 May 2021
Middlesex 172 v Hampshire 45-4
Another Hampshire wicket has fallen, with Sam Northeast this time being trapped in front by James Harris for 11.
James Vince and Liam Dawson are now at the crease.
Group One: Essex v Derbyshire, Durham v Worcestershire
Group Two: Middlesex v Hampshire, Somerset v Surrey
Group Three: Glamorgan v Yorkshire, Sussex v Kent
Alex Winter and Brendon Mitchell
Middlesex 172 v Hampshire 45-4
Another Hampshire wicket has fallen, with Sam Northeast this time being trapped in front by James Harris for 11.
James Vince and Liam Dawson are now at the crease.
Glamorgan 149 v Yorkshire 6-2
Tom Kholer-Cadmore has shouldered arms to Michael Hogan and lost his off stump.
Great start for Glamorgan and now England Test captain Joe Root at the wicket.
Essex 243-2 v Derbyshire
Essex continue to pour it on at Chelmsford.
Dan Lawrence, in 66 balls, and Tom Westley, 75, both get to fifty.
A nightmare day so far for Derbyshire who won the toss back on Thursday morning.
Glamorgan 149 v Yorkshire 6-1
Adam Lyth survived a huge lbw shout first ball of the innings from Michael Neser.
But later in the over he chips one to sqaure leg.
Michael Hogan then draws an edge that can't be held down very low at second slip.
Lots still happening for the bowlers at Cardiff.
Glamorgan 149 v Yorkshire
It was going rather well for Glamorgan in Cardiff earlier at 69-2.
But they've been whittled out either side of lunch.
Plenty has been happening thought for the bowlers so who knows how competitive a score that might be.
Essex 200-2 v Derbyshire
The two Essex openers couldn't go on this afternoon but it hasn't stemmed the flow of runs.
It's four an over for the champions with Dan Lawrence now making eye-catching progress.
Middlesex 172 v Hampshire 9-3
Two more wickets at Lord's!
Both openers are now back in the pavilion as Ethan Bamber has Joe Weatherley caught by Martin Andersson for three, before Tom Alsop is pinned in front by Tim Murtagh the very next ball.
Exactly the start Middlesex needed having posted only 172.
Durham 246 v Worcestershire 134-8
Mark Wood has taken a while to strike but he's on the board for Durham who are now on the verge of a very useful first-innings lead.
How many more can Worcestershire add?
Somerset v Surrey 43-1
There's also been a wicket at Taunton.
Mark Stoneman and Rory Burns looked in good touch but their 43-run opening stand is broken by Lewis Gregory, who has dismissed Stoneman for 18.
Middlesex 172 v Hampshire 8-1
An early wicket has fallen at Lord's, where Ethan Bamber has bowled Ian Holland.
He's the 11th wicket to fall in 70-odd overs and the fifth bowled.
Sussex 207-6 v Kent 145
Kent - Darren Stevens to be precise - are doing their best at Hove.
Some very gentle away movement draws an edge from Ben Brown for 34.
It happens so slowly with Stevens you think every time - surely you can adjust? But he keeps the wickets coming.
No significant innings for Sussex today and they're not getting away at the moment.
Durham 246 v Worcestershire 116-6
Martin Emmerson
BBC Radio Newcastle
We have just seen the departure of Tom Fell for 44. He hit a series of lovely cuts to the boundary, but should have been out when he was on 40, after he edged Ben Raine to the slips.
But the Durham skipper Scott Borthwick couldn't take it cleanly and after a bit of a juggling act it ended up on the floor.
It could have been expensive, but Fell went in the next over, losing two stumps to Brydon Carse's bowling. And Chris Rushworth has also just bowled Riki Wessels for 13 to leave Worcestershire on 116-6. They trail by 130.
It's a slow track for the batsmen but we are now seeing quite a bit of seam movement.
Somerset v Surrey 27-0
Surrey have made a very steady start at Taunton having been put in.
Lewis Gregory and Josh Davey have opened the bowling but Rory Burns and Mark Stoneman, so far, have managed to keep them out.
Sussex 197-5 v Kent 145
Sussex have grown their lead over 50 but have lost Tom Clark.
He's simply walked across his stumps and lost his leg pole.
Can Kent keep themselves in the game?
Durham 246 v Worcestershire 106-5
Durham strike after lunch as Brydon Carse goes straight through Tom Fell's defences.
Fell gone for 44 and now Durham are on top, still with plenty of runs in hand.
Middlesex 172 v Hampshire
And that's a wrap for Middlesex at Lord's as Kyle Abbot picks up his sixth wicket when he dismisses Ethan Bamber lbw. Abbott finishes with figures of 6-44.
That was a funny old innings for Middlesex, who seemed to lose wickets in bursts - from 91-4 to 100-7 and then 153-7 to 172 all out.
Glamorgan 92-7 v Yorkshire
That drastic collapse left Glamorgan in a hole at lunch and they've lost another soon into the afternoon.
Full and straight from Harry Book - almost off the wrong foot - and Chris Cooke is done by a little movement in and trapped lbw.
What can Glamorgan scrap to from here?
Middlesex 159-9 v Hampshire
Nick Gubbins' resistance is broken - and he's the fourth batsmen to be out bowled in this innings!
Mohammad Abbas cleans him up for 51 to take his third wicket and leave Middlesex in plenty of strife.
And, just as I type this, Kyle Abbott dismisses Blake Cullen for 27. Abbott now has 5-40.
Essex 138-2 v Derbyshire
Blessed relief for Derbyshire to break a fine opening stand.
Billy Stanlake, the Australian making a belated seasonal bow, has removed Nick Browne.
And in his next over, he gets Alastair Cook too!
Both left-hander driving loosely outside off.
Browne to second slip and Cook to extra-cover.
Durham 246 v Worcestershire 88-4
There's been a wicket early into the afternoon session at Chester-le-Street, where Ben Raine has trapped Brett D'Oliveira in front for 10.
Tom Fell remains unbeaten on 34.