Follow updates from day three of nine County Championship matches
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Group 1: Derbys v Worcs, Essex v Durham, Notts v Warks
Group 2: Hants v Middlesex, Somerset v Glos, Surrey v Leics
Group 3: Glamorgan v Sussex, Kent v Yorks, Lancs v Northants
Derbyshire 390 & 239-3 v Worcestershire 305
Matthew Critchley (84 not out) and Harvey Hosein (20 not out) have batted superbly for Derbyshire, who now lead Worcestershire by 323 runs.
Will we see a declaration soon?
Everything's gone a but quiet. Nine minutes without a wicket or century...
Kent 265-9 &13-1 v Yorkshire 379 & 330-5
Brilliant delivery from David Willey as Jordan Cox falls for a two-ball duck.
Yorkshire are on a roll. Just nine overs left before stumps, they can't come soon enough for Kent.
England's Zak Crawley is the new man in.
Lancashire 305 & 296-7 v Northamptonshire 177 & 19-2
Saqib Mahmood has a second wicket in four balls.
A sharp bouncer hits the gloves of Emilio Gay and loops to the slip cordon.
Gay goes for a duck, Northamptonshire still need 406.
Glamorgan 285 & 247-5 v Sussex 481
Nick Webb
BBC Radio Wales
Glamorgan batsman Kiran Carlson has become the first home-grown player in 16 years to score two centuries in a match as they look like taking Sussex into a final day in Cardiff.
Sussex, with a lead of 196 on first innings, had visions of a day off when the dangerous Ollie Robinson took his fourth wicket having Chris Cooke caught behind early in the final session.
But Carlson reached a fluent century off 116 balls with 16 boundaries, finding useful support from Callum Taylor.
The scoring rate dried up in the evening sun, 20 year old off-spinner Jack Carson and left-armer Delray Rawlins bowling probing spells as Sussex waited for the new ball.
Lancashire 305 & 296-7 v Northamptonshire 177 & 19-1
Not the start Northamptonshire would have wanted as a leading edge from Ben Curran falls straight to Rob Jones at cover off the bowling of Saqib Mahmood.
The visitors need a mammoth 406 to win. We've got 12 overs before stumps at Old Trafford.
Somerset 312 & 149 v Gloucestershire 309
Ryan Higgins completes the job, having Josh Davey caught by Kraigg Brathwaite for 22, and Gloucestershire will require 152 runs to win at Taunton.
Higgins ends with figures of 4-29 and was superb throughout.
Nottinghamshire 273 & 260 v Warwickshire 201-9 & 41-2
Image source, Rex FeaturesBrilliant from Nottinghamshire youngster Lyndon James who outfoxes India batsman Hanuma Vihari, bowling him out for eight.
Will Rhodes, unbeaten on 27 not out, now has Sam Hain for company. Warwickshire need another 292 to win.
Surrey have had enough - they fancy having a 17-over dart at Leicestershire before the close tonight.
Jordan Clark finishes unbeaten on 61, but the day really belongs to Ollie Pope and his 245.
Surrey's lead is 297.
Hampshire 319 & 290-4 dec v Middlesex 79 & 158-4
Nick Gubbins battled really well for his 67 but he's been removed by Ian Holland and his 122-run fourth-wicket stand with Robbie White is done.
White, as it happens, has just brought up his own-half century with Martin Andersson now for company.
Middlesex still need another 373 runs.
Kent 265-9 v Yorkshire 379 & 330-5
Joe Denly bowls Jordan Thompson for six and with that Yorkshire declare.
A brilliant innings from the visitors, built around centuries for Adam Lyth (116) and England Test captain Joe Root (101).
Derbyshire 390 & 207-3 v Worcestershire 305
Finally Derbyshire's 129-run third-wicket partnership is broken as Wayne Madsen is trapped lbw for 6 by Daryl Mitchell.
Harvey Hosein joins Matthew Critchley (73 not out) in the middle. The hosts lead by 292 runs. No sign of a declaration yet.
Surrey 655-7 v Leicestershire 375
Surrey may have lost centurions Ollie Pope and Jamie Smith, but Jordan Clark has carried on where they left off.
He moves onto 52 with successive sixes off Colin Ackermann, the man who earlier ended Pope's 245-run stay.
The Surrey lead is now 280 and they may well fancy a dart at Leicestershire before the close tonight such is the speed with which they've scored their runs this evening.
Essex 96 & 330 v Durham 259 & 20-3
Another huge dismissal and things are starting to get very tense in the Durham dressing room.
David Bedingham cuts straight to Ben Allison off the bowling of Sam Cook and goes for 18.
Durham are still 148 runs away.
Kent 265-9 v Yorkshire 379 & 316-4
Oh.
After getting his century, Root goes for the big shot and completely loses sight of the ball.
Joe Denly has his wicket.
Yorkshire lead by 428 with Harry Brook still not out on 56.
Somerset 312 & 143-9 v Gloucestershire 309
Marchant de Lange has gone for a sixth-ball duck and Gloucestershire have their tails up.
Kent 265-9 v Yorkshire 379 & 316-3
Finds the gap for two. Joe Root has his 31st first-class century.
A brilliant knock with only 28 of his runs coming from boundaries. This has been classic Root.
Kent 265-9 v Yorkshire 379 & 312-3
Joe Root is on 99 not out. Joe Denly is bowling.
Lancashire 305 & 296-7 v Northamptonshire 177
Dane Villas waves his batsman in and Northamptonshire will be put in for the last 25 overs of the day.
Lancashire 305 & 296-7 v Northamptonshire 177
A brilliant century for Lancashire's Steven Croft comes in 174 balls with seven fours and one six.
And that means....