Use audio icons at top of the page to listen to BBC local radio commentaries
Roach takes 5-95 as title contenders Surrey dismiss Northants for 339
Gay and Keogh both hit centuries for Northants
Warwickshire lose early wickets in reply to Somerset's 219 in key game at bottom of Division One
Essex replying to Yorkshire's 134 all out
Stoneman and Simpson put Middlesex in strong position against promotion rivals Glamorgan
Northants 339 v Surrey 46-3
Is this a Surrey wobble?
Ben Geddes goes for a big booming drive off the back foot off Jack White but gets a thin nick through to wicketkeeper Ricardo Vasconcelos.
A moment the 21-year-old would love to have again.
Yorkshire 134 v Essex 101-5
Dan Lawrence hits Jordan Thompson for four to bring up his team's 100.
Lawrence has 25 from 72 balls as he has had to rein in some of his more natural strokeplay.
But sometimes in a low scoring game, a bit of impetus with the bat can make a big difference.
Sussex 220, Worcestershire 234-1
Jake Libby has his century - and Worcestershire now lead against Sussex at Hove.
It's only his second this summer after last year's run-filled season when he made four of them, and comfortably topped 1,000 runs.
Northants 339 v Surrey 44-2
A stylish clip to midwicket from Ben Geddes as he dispatches a half volley to the boundary.
Time for Surrey to regroup, but they bat a long way down.
Somerset 219, Warwickshire 27-3
Sam Hain hits a full-flooded shot that hits Jack Brooks on the inside of his knee - and the Somerset fast bowler needs treatment.
He stays on the field though. The magic sponge seems to have done the trick.
Yorkshire 134 v Essex 85-5
Yorkshire have a second wicket in no time after lunch.
Feroze Khushi is trapped on the crease by Ben Coad as the ball seems to keep a little lower than the batter was expecting.
The difference is now 49 runs and the game is certainly in the balance.
Northants 339 v Surrey 30-2
This was not in Surrey's plan!
Ryan Patel has given it away in the second over after lunch.
He tries a hook shot off Jack White, but he gets too high on the bat and it's straight down to Lizaad Williams at fine leg.
Ten overs in and both openers are back in the pavilion.
Northants 339 v Surrey 30-1
After the flurry of wickets this morning, Surrey's plan for the afternoon will be simple - bat, bat and bat some more.
Yorkshire 134 v Essex 80-4
The afternoon starts at Headingley in pretty much the same way the morning did with Jordan Thompson in the wickets.
It's a cracking delivery as he pins Matt Critchley in front.
Yorkshire's golden arm now has 3-25.
Image source, Rex FeaturesSussex 220, Worcestershire 195-1
Ed Pollock is out at Hove - to miss out on what would have been a third century of the season.
He departs to Jack Carson's first ball of the third over in the atfernoon session.
He plays back, looking to cut, edges and the ball appears to hit lucky keeper Oli Carter's pads before looping slowly into his gloves.
Pollock looks crestfallen - and Sussex have their first wicket.
I's also spinner Carson's first of the season, on his return from injury.
New man in is Azhar Ali, to join Jake Libby, who has moved on to 83.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Division One
Wantage Road: Northamptonshire 339, Surrey 26-1 (8 overs)
Edgbaston: Somerset 219, Warwickshire 25-3 (18 overs)
Leeds: Yorkshire 134, Essex 79-3 (33 overs)
Division Two
Leicester: Leicestershire 202 all out v Durham
Lord's: Glamorgan 214, Middlesex 184-4 (56.1 overs)
Hove: Sussex 220, Worcestershire 187-0 (51 overs)
Leicestershire 202 all out v Durham
Martin Emmerson
BBC Radio Newcastle
Matty Potts has marked his return to the Durham team with his fifth five-wicket haul of the season - and his second against the Foxes.
Leicestershire lost eight wickets in the morning session for the addition of just 105 runs.
Chris Wright was the fifth wicket for Potts, edging him behind on 29 having added 49 with Callum Parkinson, who then became victim number six in the extra eight overs added before lunch to allow Durham to try and get the last wicket.
Somerset 219, Warwickshire 25-3
Anthony Gibson
BBC Radio Somerset
Lewis Gregory may have been out to the fourth ball of the morning without adding to his overnight 60, but he has more than made up for it with the ball.
He has picked up two wickets in eight relentlessly accurate overs, at a cost of just 14 runs.
The pitch remains unpredictable - the sort of track on which a batsman would never feel entirely comfortable.
Somerset will be hoping that their Pakistan Test off-spinner Sajid Khan will find some turn, and some wickets, to follow up his feisty 53 not out in a last-wicket partnership with Jack Brooks which was worth 37 valuable runs.
Sussex 220, Worcestershire 187-0
Adrian Harms
BBC Sussex
Just 21 overs possible at Hove this morning due to a late start and occasional drizzle. However, Worcestershire have added exactly 100 against some wayward Sussex bowling.
Ed Pollock has batted beautifully, circumspect when necessary, but ruthlessly dispatching the bad ball, to go to lunch just two runs short of what would be a third first-class hundred.
Jake Libby has proved an excellent partner as the visitors reach the interval in complete control.
Leicestershire 202 v Durham
Matty Potts has his sixth wicket, as home captain Callum Parkinson holes out to Nic Maddinson for 31, Leicestershire are bowled out for 202 - and a delayed lunch is now taken.
Durham's openers will be back to have a go themselves in 35 minutes' time.
Yorkshire 134 v Essex 79-3
Essex grind their way to lunch with Dan Lawrence and Matt Critchley dropping anchor.
Somerset 219, Warwickshire 25-3
Unquestionably Somerset's morning.
37 runs added to claim a batting bonus point.
And now three Warwickshire wickets to earn a bowling bonus point too.
Lewis Gregory has got two of those wickets, to compensate for not adding a run this morning to his overnight score of 60.
Northants 339 v Surrey 26-1
An action-packed morning with 116 runs and seven wickets.
Surrey are 313 behind and one down after the loss of Rory Burns.
Sussex 220, Worcestershire 187-0
Lunch is taken at Hove, where the covers are coming on as Ed Pollock goes off on 98.
Jake Libby is on 77, the Pears have added exactly 100 runs in the session in 21 overs, they are now only 33 behind - and look well on course for a big first-innings lead.
Yorkshire 134 v Essex 67-3
Essex are halfway towards Yorkshire's first innings score as Dan Lawrence and Matt Critchley look to rebuild.
The visitors are probably marginally ahead at the moment, but a couple of quick wickets and that could easily change.