Yorkshire out for 282 against Notts
Rob Keogh hits 154 for Northants
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Cook out for 4 for Essex
Hampshire 210-5 v Somerset
They had to wait more than 45 overs, but Somerset have Hampshire's fifth wicket at long last.
There's a slight touch of luck to it, as Ryan McLaren's shot hits Tom Abell, who then recovers to make the catch off a Jack Leach delivery.
A wicket to tell you about at the Oval as well, where Kyle Jarvis has been caught off Tom Curran to leave Lancashire 231-8 against Surrey.
Yorkshire 250-8 v Nottinghamshire
Jack Brooks and Andy Hodd are frustrating Nottinghamshire's bowling attack at Scarborough, their 58-run stand earning the hosts a second bonus point.
Hodd has 78, almost double his previous season-best first-class score of 43.
Durham 173-6 v Warwickshire
Warwickshire's decision to put Durham in to bat earlier seems to be paying off.
Paul Collingwood is the sixth batsman to go, caught by Varun Chopra at silly point off the bowling of Jeetan Patel.
Hampshire 198-4 v Somerset
Ryan McLaren has his sixth half-century of the County Championship season - can he convert it into a ton?
His partnership with Sean Ervine is now worth 106 runs, with Ervine unbeaten on 84 runs.
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Ben Southworth: Simone Bails and Nigel Long jump
Richard Jack: Geoffrey Moscow Olympics Boycott
Northamptonshire 256-5 v Worcestershire
Alex Winter
BBC Radio Northampton sport
"Northamptonshire lost two early wickets in the afternoon but they weren't perturbed and put their foot down in the second hour to tea, adding over 150 runs in the 30 overs bowled.
"A fine first Championship century of the summer for Rob Keogh - who's been in good nick in the past six weeks, having contributed strongly to Northants' run to the One-Day Cup quarter-finals.
"Now they will look to take control of the day and ensure Worcestershire are made to regret the decision to bowl first - a decision one or two home supporters were questioning at tea time."
Lancashire 200-7 v Surrey
An old saying in cricket is that one wicket often brings two, and that's the case at The Oval.
Lancashire debutant Rob Jones has fallen for 25, bowled by 18-year-old Sam Curran, who now has four wickets for the innings.
The visitors have just got to 200, meaning they've picked up their first bonus point.
Gloucestershire 145-4 v Kent
BBC Radio Kent's Ben Watts at Bristol:
"A good session for the hosts as Phil Mustard and Hamish Marshall negotiated the session without the loss of a wicket.
"Having been 84-4 at lunch the pair added just a further 61 runs, but with the Bristol pitch often flattening out as the game progresses, keeping wickets in hand seems more important at this juncture than run rate.
"Kent captain Sam Northeast will look to keep rotating his bowlers, of which South African overseas signing Hardus Viljoen looks the sharpest, as they seek further inroads in the evening session."
Lancashire 188-6 v Surrey
Image source, EmpicsLancashire batsman Jordan Clark reaches his half-century, but is soon after sent back to the pavilion thanks a magnificent slip catch by Kumar Sangakkara.
The former Sri Lanka batsman dives low to his right and clings on to the ball after Stuart Meaker had found the edge.
Not bad for a man who turns 39 in a couple of months.
Glamorgan 252 all out v Sussex
BBC Wales' Nick Webb in Cardiff:
"Half-centuries from experienced duo Graham Wagg and Mark Wallace dragged Glamorgan to a position of some respectability after Sussex's seamers were rampant in the morning session.
"Wagg (57) and Wallace (61) counter-attacked in breezy fashion in the afternoon after Glamorgan slumped to 56-5 in the morning.
"But Sussex recent recruits David Wiese (3-52) and Jofra Archer (4-91) kept the visitors just in control of the game in a frantic session which yielded 165 runs and five wickets.
"A brief volley of late boundaries from number 11 Michael Hogan took Glamorgan to a second batting point, while Owen Morgan was left not out 32."
Leicestershire 172-6 v Essex
Division Two leaders Essex are in control against promotion rivals Leicestershire at New Road, Graham Westley bowling Ned Eckersley to leave the Foxes 172-6 just before tea.
Glamorgan have finally been bowled out by Sussex at Cradiff, but not before Owen Morgan and Michael Hogan's 33-run last-wicket stand dragged the hosts to 252 and a second batting bonus point.
Northants take tea at 246-5 against Worcestershire, while Gloucestershire are 145-4 at the end of the second session against Kent.
Durham 151-5 v Warwickshire
Durham lose a wicket just before tea, Michael Richardson edging Keith Barker to slip for 55 to leave the hosts on 151-5.
Hampshire and Somerset have already gone off for refreshments at Taunton, with the visitors 174-4 after a much-improved performance with the bat in the second session.
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John Derham: BMX Laxman
Julie Franks: Alistair Brown(lee)
Northamptonshire 234-5 v Worcestershire
Rob Keogh is the first player of the day to reach three figures, bringing up his ton from 144 balls with a four off Jack Shantry.
Keogh took a stunning catch to remove Andre Russell in the T20 Blast semi-final win over Notts at the weekend as well, before the Steelbacks went on to beat Durham in the final. Quite a few days for the 24-year-old.
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Nick Hepworth: Bit of a "jump", not a player but might make for a controversial result in the Olympics XI - Duckworth-Carl Lewis Method.
Yorkshire 184-7 v Nottinghamshire
Yorkshire's Azeem Rafiq misses out on his first century since hitting his maiden ton in 2009, given out lbw to Nottinghamshire spinner Samit Patel.
Moments later, Andy Hodd reaches his first half-century of the season with a single off leg-spinner Imran Tahir.
Glamorgan 201-7 v Sussex
Mark Wallace follows Graham Wagg in reaching a half-century for Glamorgan, who have done well to fight back from 56-5 to pick up their first batting point for the loss of seven wickets.
Northants are also closing in on 200, with Rob Keogh's 83 leading the way in their 196-5.
Leicestershire have just lost Mark Cosgrove for 71 in their promotion battle with Essex - the Foxes are now 155-5 at New Road.
Meanwhile Gloucetsershire are still yet to lose a wicket in the second session against Kent, moving slowly on to 134-5.
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Anthony Wilkins: Mo Farahokh Engineer.
Hampshire 146-4 v Somerset
While Nottinghamshire struggle to break Rafiq and Hodd's stubborn resistance, fellow strugglers Hampshire have got their innings back on track against Somerset.
Sean Ervine has 62 runs and has just brought up a fifty partnership with Ryan McLaren.
Yorkshire 149-6 v Nottinghamshire
Tremendous batting from Azeem Rafiq, who brings up his first 50 since re-signing for Yorkshire in June with successive fours off the bowling of Brett Hutton.
Wicketkeeper Andy Hodd remains alongside him at the crease on 37, needing to go far beyond his season-best 43 to put the hosts on top of struggling Nottinghamshire.