Commentary of every game available at top of this page
Northants-Glos called off because Northants player tests positive for Covid-19
Rory Burns captains Surrey, Jack Leach (Somerset) & Zak Crawley (Kent) also in action
Lancashire opener Keaton Jennings out for golden duck
All 18 counties split into three regional groups of six
Each side playing final group game; two teams with most points contest five-day final
Central Group top two, Worcestershire and Somerset, meet at New Road
North Group leaders Derbys at Lancs, second-placed Yorks host Leics
Essex, Kent, Middlesex and Hants in contention in South Group
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Walter b Harris 43 (Essex 87-5 v Middlesex 138)
Image source, Getty ImagesMiddlesex make a breakthrough once more after a bit of resistance from Essex.
Paul Walter is bowled for 43 as James Harris returns with the ball.
That ends a partnership of 44 for the fifth wicket and this match is very much in the balance still.
Leach lbw b Barnard 21 (Worcestershire v Somerset 251)
Ed Barnard traps England's Jack Leach for 21 and Somerset finish on 251.
So then, Worcestershire will face around five overs before close of play this evening. Honours even in this crucial game in the central group.
Bohannon c Hudson-Prentice b Melton 94 (Lancashire 169-6 v Derbys)
Massive wicket for Derbyshire in their chase for a spot in the Bob Willis Trophy Final.
Josh Bohannon's superb innings falls just short of a century as Dustin Melton picks up a third wicket.
We've still got 17 overs left in the day.
Yorkshire 36-2 v Leicestershire 124
Not good news sadly from our man in Leeds.
Players have been off the field since 16:00 BST.
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Just in case you're just joining us in this evening session, news from earlier that the Central Group match at Bristol between Gloucestershire and Northamptonshire was abandoned after lunch after a non-playing Northants squad member tested positive for coronavirus.
Gloucestershire's Bob Willis Trophy game with Northamptonshire is abandoned after a Northants squad member tests positive for Covid-19.
Read MoreDavey c sub b Barnard 28 (Worc v Somerset 242-9)
I was just writing a post about how Josh Davey was looking to push on.
He tries to pull Ed Barnard into the legside but hits it straight to midwicket.
Jack Leach (16) is now joined at the crease by Jack Brooks.
Nine overs beore stumps at New Road.
Lancashire 163-5 v Derbys
The 50 partnership comes up between Bohannon (88*) & Balderson (20*) for Lancashire's sixth wicket.
It's been very slow going at Liverpool in the last few minutes. The Derbyshire bowlers aren't giving any runs away for free.
Something's gotta give!
Kent v Hampshire 191
Image source, Rex FeaturesHampshire all out for 191 against Kent at Canterbury and once more, Darren Stevens takes five wickets in an innings.
Ajeet Dale the last man to depart for the visitors as he presents wicketkeeper Ollie Robinson with his sixth catch of the innings.
Stevens takes 5-37 and Kent will have 13 overs to face before the close in their reply.
Lancashire 157-5 v Derbys
Josh Bohannon has stalled a little in his pursuit of a century.
The Lancashire number three has stayed on 87 for the last few overs now.
Derbyshire are still toiling with Anuj Dal being introduced into the attack.
Worc v Somerset 220-8
There's 15 overs left in the day at New Road.
England international Jack Leach is on eight with Josh Davey on 13.
Worcestershire will be looking to finish off Somerset's innings before the close.
Essex 66-4 v Middlesex 138
Runs still tough to come by at Chelmsford but Paul Walter (34 not out) and Ryan ten Doeschate (15 not out) are doing their best to rebuild for the hosts.
Essex were 44-4 a short while ago.
Yorkshire 36-2 v Leicestershire 124
Rain delay continues at Headingley sadly....
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Kent v Hampshire 190-9
Kent finally manage to break Hampshire's ninth-wicket stand.
Scott Currie falls for a well-made 38 as he edges Harry Podmore to give Ollie Robinson a fifth catch of the innings.
Currie and Brad Wheal (14 not out) added 46 in that partnership.
Slowed down a bit hasn't it?
Bell c Cullen b Douthwaite 50 (Glam v Warwickshire 132-6)
NOOOOOOO!
Straight after the restart Ian Bell departs.
A memorable wicket for Dan Douthwaite.
Just one more innings to go now in Bell's first-class career.
Image source, Getty ImagesByrom c Barnard b Pennington 30 (Worc v Somerset 203-7)
Ed Byrom takes Somerset beyond 200 to grab a first bonus point before he falls off the bowling of Dillon Pennington.
In comes Jack Leach - we all know what he can do with the bat.
Pennington now has 3-44 and it's advantage Pears once again
Kent v Hampshire 188-8
Hampshire seamer Scott Currie (37 not out) is doing a fine job holding up Kent's advances with the ball at Canterbury.
The 19-year-old has Brad Wheal (13 not out) for company at the other end as they've so far added 43 for the ninth wicket.
Lancashire 148-5 v Derbys
We're back playing again in Liverpool.
Josh Bohannon is on 80 not out, while George Balderson has 13.
Yorkshire 36-2 v Leicestershire 124
Some sharp showers have halted play at Headingley with Yorkshire on 36-2 in reply to Leicestershire's 124.
Will Fraine (11 not out) and Tom Loten (7 not out) the not out pair after Tom Kohler-Cadmore and Adam Lyth departed cheaply.
May only be a short delay as not all the covers are out there at the moment.
Khushi lbw b Harris 1 (Essex 44-4 v Middlesex 138)
Essex in all sorts of bother now!
Feroze Khushi the next man to depart for the hosts as James Harris has him pinned dead in front of the stumps for just a single.
Chances of Essex building any sort of lead in serious doubt.