Former England captain Alastair Cook makes unbeaten 39 for Essex v Somerset
Lancashire all-rounder Jordan Clark scores maiden first-class 100 v Surrey
Sam Robson leads way with 84 for Champions Middlesex against Hampshire
Surrey v Lancashire 209-6
Two half centuries in quick succession for Lancashire as their afternoon fight-back continues at The Oval.
Shivnarine Chanderpaul is the man to raise his bat this time as he reaches 50 off 138 balls, which has included seven fours.
His seventh-wicket partnership with Jordan Clark is worth 87 valuable runs so far.
Durham 162 v Nottinghamshire 21-3
Martin Emmerson
BBC Newcastle
I said it would be difficult for Nottinghamshire and it is. They have lost three wickets in the space of seven balls. Graham Onions started it with the dismissal of Greg Smith for 4 as he edged to Paul Collingwood at 1st slip in the fourth over.
Chris Rushworth followed that up with a double wicket maiden as he bowled Jake Libby for 3 and then got Alex Hales LBW for 0.
Who would want to be a batsman in April, in the cold, in England?
Derbyshire 192-4 v Northamptonshire
Dave Fletcher
BBC Radio Derby Sport at Derby
Gary Wilson has reached 50 on his first appearance for Derbyshire, helping them to recover from the loss of two quick wickets.
The Ireland international took 69 balls to get to his half century, hitting eight fours.
He and Daryn Smit (17 not out) were going along nicely having added 78 for the fifth wicket before bad light intervened and forced an early tea interval.
Durham 162 v Nottinghamshire 7-3
It's raining wickets at Chester-le-Street!
Another goes down for Nottinghamshire at the start of their reply and this time it's England international Alex Hales without making a score.
Chris Rushworth claims a wicket with the first and last balls of that over.
Durham 162 v Nottinghamshire 7-2
Durham have picked up two much needed wickets as opener Greg Smith was caught in the slips by Paul Collingwood for four off the final ball of Graham Onions' second over.
Chris Rushworth then bowls fellow Nottinghamshire opener Jake Libby via an inside edgefor three to reduce the visitors to 7-2 before tea.
Somerset 176-7 v Essex
Spin keeps doing the job down at Taunton and for Essex as Ashar Zaidi returns to the attack.
He traps Roelof van der Merwe leg before following a handy partnership with Peter Trego.
Warwickshire 152-8 v Yorkshire
Warwickshire's lower order continues to battle away at Edgbaston, with Keith Barker's unbeaten 33 taking the hosts past 150.
Tea was scheduled for 16:40 BST but the rain has returned and the players have headed off the field.
Glamorgan 207 v Worcestershire 15-2
Dave Bradley
BBC Hereford & Worcester at Cardiff
A post-lunch fightback by Glamorgan has put an entirely different look to the opening day against Worcestershire.
Resuming at 105-8, David Lloyd and Lukas Carey took the fight to Worcestershire, adding 68 from just eight overs.
Michael Hogan then joined Lloyd and they picked up a batting bonus point before Lloyd was the last man to go for 88 as Glamorgan reached 207 all out.
Worcestershire’s openers then both went for ducks both caught behind, with Hogan and Carey getting a wicket each.
Early tea taken due to bad light, with Worcestershire 13-2.
Surrey v Lancashire 198-6
Lancashire's rearguard at The Oval continues and a lovely driven four off Mark Footitt from Jordan Clark sees him reach a half century.
It's taken him 65 balls and has included seven fours and two sixes in an extremely valuable partnership alongside Shivnarine Chanderpaul.
Poynter 65; Fletcher 3-23
Martin Emmerson
BBC Newcastle
It's as gloomy now as it was when Durham began their innings this morning and their 162 could yet prove competitive in difficult conditions in Chester-le-Street.
Stuart Poynter's quick-fire 65 was much-needed and watched by an enthusiastic home crowd. He added 52 for the final wicket with Chris Rushworth, while the wickets were shared as Jake Ball, Luke Fletcher and James Pattinson took three apiece.
Tea will be at 16:00 BST if the weather holds, leaving Notts with a tricky session of another 28 minutes.
Middlesex 171-2 v Hampshire
After losing Sam Robson, Middlesex pair Stevie Eskinazi and Dawid Malan are not looking to take any risks in the lead up to tea.
That has lead to things taking a slightly slower approach and run scoring effort to proceedings.
Kent 123-3 v Sussex
Adam Whitty
BBC Radio Kent at Hove
The curse of the half-decent partnership strikes again for Kent.
Sam Northeast goes for 23, mistiming a hook straight to the bucket-like hands of Weise at mid-on.
That's partnerships of 27, 35 and 53 now for Kent in this innings, and in the 23 Kent wickets that have fallen this season, the highest partnership they have managed is 60.
Sean Dickson is still building though, and has just got a hard-earned 50 off 163 balls.
Image source, Getty ImagesWarwickshire 130-8 v Yorkshire
What was I saying about unscheduled rain delays and wickets falling?
Jeetan Patel cannot survive past Adil Rashid's first over after the resumption of play as the New Zealand man is outfoxed by the Yorkshire spinner's googly. Warwickshire are sinking fast at Edgbaston.
Durham 162 v Nottinghamshire
Image source, Getty ImagesLuke Fletcher ends Stuart Poynter's resistance as he bowls the the wicketkeeper for 64.
But for some rearguard action, with the final three wickets adding 91 runs, the hosts could have easily bundled out for the their lowest ever score against Nottinghamshire.
Chris Rushworth and Graham Onions will be hoping to pick up some early wickets before tea.
Derbyshire 165-4 v Northants
Alex Winter
BBC Radio Northampton sport
The sun has poked it's way through at the Racecourse Ground and Derbyshire are trying to build again after losing two wickets in six balls just after lunch.
Gary Wilson (39 not out), after a winter move from Surrey, is leading the progress with a run-a-ball innings so far, playing the ball late and looking in control.
He's the experience that Derbyshire will be hoping can be at the vanguard of their recovery.
Image source, BBC SportWarwickshire 128-7 v Yorkshire
The rain has abated in Birmingham and play will get under way again at Edgbaston at 15:10 BST.
Warwickshire will be hoping the break in play will not have stopped Jeetan Patel's flow.
Somerset 143-6 v Essex
Image source, Rex FeaturesSomerset lose their sixth wicket as Lewis Gregory attempts to fend of a short ball from Neil Wagner but sends the ball straight into the hands of Simon Harmer at short fine-leg.
Durham 145-9 v Notts, Poynter 51
Martin Emmerson
BBC Newcastle
Image source, Getty ImagesStuart Poynter is enjoying himself, with his 51 coming up thanks to a ninth boundary.
It took 45 balls and is the third time he has reached a half century in First Class cricket. Durham needed this but they also need a lot more out of today.
Hampshire v Middlesex 150-2
A century partnership and out for Sam Robson as Gareth Berg entices an edge off the right-hander and Jimmy Adams takes the catch at second slip.
Thirteen fours in that 144-ball knock from Robson. Dawid Malan is the new man in at four for the champions.
Middlesex 150-1 v Hampshire
Image source, Rex FeaturesThey say good things comes in threes and that's exactly what's happened for Middlesex at the Ageas Bowl.
Stevie Eskinazi brings up his half century off 109 balls, with eight fours, to take the visitors past 150 and bring up his century partnership with Sam Robson.