Wins for Kent, Derbyshire and Lancashire
Kent's Jordan Cox (238*) & Jack Leaning (220*) put on 423
Record partnership for any wicket for Kent who end on 530-1
All 18 counties split into three regional groups of six
Each side will play five games
Two teams with most points contest five-day final
Bob Willis Trophy - day three
North group:
Durham 180 & 21-4 v Lancashire 308
Leics 199 & 67-2 v Derbys 408
Notts 355 v Yorks 264 & 82-1
Central group:
Gloucs 210 & 51-3 v Warwickshire 247
Worcs 455-8 v Glamorgan 257-6
South group:
Essex 262 & 120-3 v Surrey 187
Kent 503-1 v Sussex 332
Middlesex 252 & 75-2 v Hants 296
And it's also lunch at all of our other grounds.
Let's take a look at the scores at the break....
Harte c Croft b L Wood 3 Durham 180 & 21-4 v Lancs 308
It's a nightmare for Durham but a dream debut for Lancashire's Luke Wood.
He forces an edge from Gareth Harte and Steven Croft makes no mistake at third slip.
That'll be lunch at Chester-le-Street too with the hosts trailing by 107 runs.
Kent 503-1 v Sussex 332
It's now lunch after a record-breaking morning session.
Jordan Cox (223*) and Jack Leaning (208*) stroll off in the sunshine with Kent's highest-ever partnership under their belts.
A stand of 396. They'll potentially have another five overs to bat after lunch if Kent don't declare.
Harry: Maybe it's time to just go all out for Cox and Leaning. Kent are comfortably in the lead here, and to increase their score, maybe going for more boundaries, would frustrate the Sussex bowlers more.
Good shout Harry, although when you've made it this far, you probably want to see it out to the close. I'm no double century expert though, my highest score in club cricket is 17*
Notts 355 v Yorkshire 264 & 81-1
Elsewhere, Yorkshire have nearly wiped out the deficit, just ten runs away now.
Bairstow (43) and Lyth (33) have batted superbly to take the visitors to 81-1
I think we'll have one more over and then lunch.
Kent 500-1 v Sussex 332
And now the Kent 500 comes up. For the loss of Daniel Bell-Drummond. Crazy.
Kent 492-1 v Sussex 332
Image source, Getty ImagesThey've done it! Kent's record partnership for any wicket is broken.
Jordan Cox smashes Mitch Claydon straight over his head for four and his second-wicket partnership with Jack Leaning goes up to 385.
It beats the 382 set by Sean Dickson and Joe Denly in 2017. Amazing effort.
Kent 488-1 v Sussex 332
That's the double hundred for Jack Leaning!
And his stand with Jordan Cox is now at 381 - just two more needed to break the Kent highest-ever partnership record.
Westley c Borthwick b Virdi 34 (Essex 262 & 105-3 v Surrey 187)
Or not so comfortable for Essex...
Tom Westley guides Amar Virdi straight to leg slip and Surrey get a wicket just before lunch.
Essex 262 & 104-2 v Surrey 187
It's all looking rather comfortable for Essex.
Tom Westley and Varun Chopra are happy to rotate the strike and pick up the odd boundary as Essex go past 100 in their second innings.
The lead is 179.
G Hankins c Bresnan b Hannon-Dalby 0 (Gloucestershire 210 & 30-3 v Warks 247)
It's eight for Oliver Hannon-Dalby!
George Hankins edges to Tim Brensan at first slip and is out for a duck.
Hannon-Dalby moves on to match figures of 8-33. His first-class career-best is 9-137.
Gloucestershire still trail Warwickshire by seven. It's been the Bears' session so far.
C Steel lbw b L Wood 0 (Durham 180 & 5-3 v Lanc 308)
Liam Wood gets in on the act as an in-swinging yorker traps Cameron Steel lbw for a nine-ball duck.
Durham are falling apart. They still need another 122 runs just to make Lancashire bat again.
At the moment it looks they're going to be well short.
And another wicket at Chester-le-Street...
Charlesworth lbw b Hannon-Dalby 14 (Gloucestershire 210 & 22-2 v Warks 247)
A seventh wicket in the match for Oliver Hannon-Dalby!
The big man traps Ben Charlesworth lbw for 14.
Gloucestershire are 22-2, still 15 runs behind the Bears.
Dickson c Davies b Bailey 3 (Durham 180 & 3-2 v Lancs 308)
Deary me.
Almost immediately after the restart, Sean Dickson edges Tom Bailey to Lancashire keeper Alex Davies.
That's two for Bailey. Durham still trail by 125.
Notts 355 v Yorks 264 & 54-1
Jonny Bairstow grabs a single to move to 23.
That's also the 50 partnership for Bairstow and his partner Adam Lyth who's on 26.
Yorkshire are just 37 runs behind Notts now.
Image source, Rex Features
Durham 180 & 3-1 v Lancs 308
The sun re-emerges at Chester-le-Street and the players are back out to restart play.
Thankfully only one over lost.
Kent 441-1 v Sussex 332
Image source, Getty ImagesA day that 19-year-old Jordan Cox will never forget.
The Kent opener brings up his double hundred off 311 balls, an innings that includes 25 fours and three sixes.
Kent have 12 and a bit overs left of their allocated 120. The next question is - can Cox and Jack Leaning break Kent's record partnership for any wicket of 382 set by Sean Dickson and Joe Denly in 2017?
The pair have currently put on 334.
Worcestershire 455-8 v Glamorgan 217-6
Having lost four wickets in the first hour, Glamorgan have just steadied things a little at New Road.
Billy Root and Graham Wagg providing the clear heads for the Welsh county.
But they still trail by 238.