Use audio icons to listen to ball-by-ball commentary of each match
Group One: Essex v Derbyshire, Durham v Worcestershire
Group Two: Middlesex v Hampshire, Somerset v Surrey
Group Three: Glamorgan v Yorkshire, Sussex v Kent
Middlesex 172 & 93-7 v Hampshire 208
Could this be the one thing that might still save Middlesex?
Tea has been taken at Lord's, where another shower has forced the players off the field.
The hosts lead by 57 with three second-innings wickets intact.
Derbyshire 146 & 0-0 v Essex 412-3 dec
No surprises as Essex enforce the follow-on. Play resumes with Derbyshire trailing by 266 runs.
Glamorgan 149 v Yorkshire 185-8
Ffion Wynne
BBC Radio Wales
There have been two captain's innings here in Cardiff – one from England’s Test skipper Joe Root, who has 75, and another from Yorkshire’s Steven Patterson, who has 34 batting at number 10.
Play started at 13:10 BST after some overnight rain and further showers this morning, and we seemed to be in for a repeat of yesterday’s wicket-fest as Michael Neser completed his five-fer when he removed both Dom Bess (20) and 19-year-old Harry Duke for a golden duck on debut.
Since then, though, both Root and Patterson have been in control as Glamorgan struggled to make an impact with an older ball. The pair have added 74 for the ninth wicket and thankfully it’s looking like we won’t have any more rain here today.
Durham 246 & 256-4 v Worcestershire 213
A twelfth first-class half-century for Jack Burnham who is helping Durham towards a very healthy lead.
It doesn't seem like the hosts have slowed down one bit since centurion Will Young's wicket 20 minutes ago.
Glamorgan 149 v Yorkshire 185-8
An excellent end to the session as Joe Root (75) and Steven Patterson (34) remain unbeaten, posting a 74-run stand.
Yorkshire's lead is 36 runs with two wickets in hand.
Melton c & b Harmer 15
Simon Harmer takes a career-best 9-80!
As if we weren't already in awe of his performance, the spinner takes an outrageous catch off his own bowling to reach his nine-for.
Derbyshire trail by 266 runs. That's tea, expect the follow-on to be enforced after it.
Will Young lbw b Tongue 103 (Durham 246 & 232-4 v Worcestershire 213)
Key wicket!
And it's a cracking delivery too as Josh Tongue gets one to nip back and catch centurion Will Young plumb on his back leg.
A brilliant innings comes to a close. Durham lead by 265.
Glamorgan 149 v Yorkshire 160-8
Yorkshire take the lead as skipper Steven Patterson smashes Michael Neser for four.
Patterson moves on to 25 while Joe Root is unbeaten at the other end with 63.
This pair have added 49 together. A very useful ninth-wicket stand.
Middlesex 172 & 67-7 v Hampshire 208
Seven down.
Brad Wheal is in on the act now, cleaning up John Simpson's stumps as Middlesex's woes continue.
Stanlake b Harmer 0 (Essex 412-3 dec v Derbyshire 128-9)
Eight wickets for Hamer now!
Number 10 Billy Stanlake is bowled for a six-ball duck.
Kind of wish Dan Lawrence didn't dismiss Billy Godleman at the start of this innings...
Middlesex 172 & 67-6 v Hampshire 208
Keith Barker impressed with the bat this morning and now he's doing some damage with the ball too.
He pins Martin Andersson in front for nine to leave Middlesex just 31 runs in front with four second-innings wickets remaining.
Durham 246 & 227-3 v Worcestershire 213
It's back-to-back centuries in a Durham shirt for Will Young.
What an innings from the New Zealand international. He's helped deliver his side to a lead of 260. The hosts are in the driving seat.
Guest c Ten Doeschate b Harmer 49 (Essex 412-3 dec v Derbyshire 128-8)
Simon Harmer has 7-64!
Brooke Guest had rallied so well but he eventually falls to the South African.
He may still be short of his career-best figures of 9-95, but take nothing away from his scintillating spell this afternoon.
Derbyshire trail by 284.
Kent 145 & 138-2 v Sussex 256
Oh hello, we may see a ball being bowled in Hove today...
Allow X content?
This article contains content provided by X. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read X’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Hosein c Ten Doeschate b Harmer 9 (Essex 412-3 dec v Derbyshire 127-7)
We're giving Simon Harmer the blue wicket treatment.
The Essex bowler has just got another one, as Harvey Hosein chips it to Ryan ten Doeschate.
Derbyshire are seven down and Harmer has taken six.
Critchley c & b Harmer 4 (Essex 412-3 dec v Derbyshire 109-6)
Simon Harmer has another five-for.
This time it's Matt Critchley who falls, caught and bowled by the Essex spinner.
Derbyshire are in a right mess now, still trailing by a mammoth 303 runs.
Glamorgan 149 v Yorkshire 126-8
This has been a bit of a lone hand from England Test captain Joe Root.
He brings up his half-century off 120 deliveries - the first fifty for either side in the contest.
Steven Patterson is with him on eight.
Middlesex 172 & 49-5 v Hampshire 208
Kyle Abbott and Mohammad Abbas are just causing all manner of problems here.
Abbott has struck again - his third wicket in the innings and ninth of the match - to remove Australia's Peter Hanscomb for 24.
The lead is 13.
Essex 412-3 dec v Derbyshire 103-5
Another important breakthrough for Essex as they attempt to force the issue at Chelmsford.
Simon Harmer, so often the go-to man, dismisses Wayne Madsen for 23.
The visitors are still 309 behind.
Middlesex 172 & 41-3 v Hampshire 208
Middlesex may now lead by five runs but they're losing wickets with alarming regularity.
Robbie White is the latest to fall as Mohammad Abbas dismisses him caught and bowled for five.
Hampshire are well on top.