Essex beat Lancashire by an innings and 124 runs
Dom Sibley and Dan Lawrence hit 100s for Surrey v Kent
Hampshire's Fletcha Middleton scores maiden first-class hundred
Joe Clarke hits double century for Nottinghamshire
Durham defeat Worcestershire by 185 runs at Kidderminster
Middlesex beat Yorkshire by six wickets at Lord's
Karun Nair scores unbeaten 202 for Northants v Glamorgan
Kent 244 v Surrey 353-2
Jamie Smith makes a confident start for Surrey.
After a couple of stylish boundaries through the off-side he is fortunate as an edge off Jack LOeaning runs away for another.
Three batting points now for the defending champions.
Essex 377 v Lancashire 146 & 103-8
Simon Harmer has his first wicket of the innings just before lunch and it's another tame dismissal from a Lancashire perspective.
Tom Bailey skips down the pitch to Harmer but is unable to free his arms sufficiently and instead chips the ball back to the Essex spinner who takes a comfortable caught-and-bowled chance.
Essex closing in on their second County Championship win the of the season.
Worcs 184 & 49-2 v Durham 244 & 397-5 dec
Paul Coughlin will have to wait until after lunch for his hat-trick ball.
Within the space of two balls the game has completely changed.
Worcestershire were going along nicely heading towards lunch with all 10 wickets intact but Gareth Roderick dragged on and with the very next ball Brett D'Oliveira got out as well.
They need to bat all day to stand any chance and have rather given up two wickets under little pressure there.
Worcs 184 & 49-2 v Durham 244 & 397-5 dec
Horror show from Brett D'Oliveira who has a pair.
He's gone first ball to give Paul Coughlin his second in as many balls.
Worcs 184 & 49-1 v Durham 244 & 397-5 dec
Oh Gareth Roderick!
He was playing so well and looked nice and set with Jake Libby but he's been bowled by Paul Coughlin, dragging the ball on to his own stumps.
It had been a positive start for Worcs with lunch on the horizon they have lost their first wicket.
Northants 422-5 v Glamorgan 271
Four batting points secured, Karun Nair reaches a 161-ball century for Northants with a boundary off James Harris - the 11th of his innings.
They lead by 151 and Nair has so far put on 69 with Saif Zaib, who has 36.
Kent 244 v Surrey 340-2
Dan Lawrence moves to leg but the ball spins sharply away from him out of the foot marks and he is bowled.
Finally a moment's relief for Kent following a 193-run stand which has put Surrey firmly in control of this game.
Lawrence faced 143 balls and hit 10 fours.
Hampshire 212-1 v Warwickshire 455
Warwickshire captain Alex Davies is funking things up at Southampton in search of a breakthrough.
He goes for an umbrella field to Fletcha Middleton off the bowling of Danny Briggs but the Hampshire batter is unfazed.
He is 86 not out off 255 balls
Kent 244 v Surrey 336-1
A couple of reverse sweeps in Matty Parkinson's latest over for Kent.
They only cost singles but are indicative of the dominance of the Surrey not out pair.
Dom Sibley is 145 not out and Dan Lawrence has 110.
Karun Nair is nearing a century for Northants against Glamorgan at Wantage Road. He is 92 not out and the home side are 411-5 - a lead of 140.
Derbyshire are 165-8 against Leicestershire after Alex Thomson fell to Tom Scriven for 15 - still more than 400 runs behind.
Sussex need two runs for a third batting point against Gloucestershire. They are 348-7 in the 107th over with John Simpson 32 not out.
Middlesex 27-1 - target 158
A change of bowling at Lord's as Yorkshire call up Mickey Edwards.
His first delivery is pushed through the covers for four by Max Holden.
No great power, just excellent timing.
Kent 244 v Surrey 315-1
Dan Whiting
BBC Radio London
That is an excellent 100 for Dan Lawrence, his first for Surrey off 131 balls in two and a half hours with nine fours.
It's great to see and that is a statement to the England selectors.
He hasn't even really gone through the gears.
Essex 377 v Lancashire 146 & 78-7
That put the mockers on Matthew Hurst.
It's a bit of a soft dismissal as he chips an nonthreatening delivery from Shane Snater straight into the hands of Sam Cook at square leg.
Essex 377 v Lancashire 146 & 1 78-6
Spin for the first time today at Chelmsford as Simon Harmer is tossed the ball.
Lancashire have quietly steadied the ship after a flurry of wickets earlier thanks to Matthew Hurst (12 not out) and George Bell (17 not out).
The Red Rose should at least make it to lunch without being bowled out.
Kent 244 v Surrey 313-1
Dan Lawrence gives himself room and forces Jack Leaning away square for four to reach his first hundred for Surrey.
After a frustrating winter watching England from the sidelines, could he find a way into the Text XI later in the summer?
Hampshire 198-1 v Warwickshire 455
Kevan James
BBC Radio Solent commentator
Nick Gubbins continues his fine early season form.
This is his 17th first-class 100 and he is playing in his 124th first class match.
Kent 244 v Surrey 300-1
Image source, Rex FeaturesSorry to keep harping on, Kent followers, but this really does look very comfortable for Surrey at the moment.
A Dom Sibley single takes the total to 300 and Dan Lawrence whips the next through mid-wicket for four to move into the 90s.
Kent 244 v Surrey 298-1
No let up by Surrey as a Dan Lawrence under-edge brings him two runs and a 150 partnership with Dom Sibley.
The latter attempts a slightly ungainly cover drive to end the over, but can penetrate the field and remains 131 not out.
Hampshire 198-1 v Warwickshire 455
Nick Gubbins made a couple of half-centuries against Lancashire last time out but makes it to three figures against Warwickshire this time around.
The man himself acknowledged last night this was an "attritional" match at Southampton and he's certainly showed plenty of stoicism with his first County Championship hundred of the season.
Gubbins brings up his ton, off 215 balls, with a flick of his pads for four through fine leg off Oliver Hannon-Dalby.
It's Gubbins' 17th first-class hundred.
Somerset 454 v Notts 193 & 102-2
Image source, Getty ImagesA couple for Joe Clarke off Lewis Gregory means Notts are up and over the 100 mark.
Shoaib Bashir hasn't got a wicket yet but he's being very economical, with only nine runs from his first six overs.