Haseeb Hameed scores 117 for Lancashire v Middlesex
Alastair Cook makes just 11 on return to The Oval for Essex v Surrey
Gary Ballance scores 148 for Yorkshire v Hampshire
George Bartlett and Tom Abell make centuries for Somerset v Nottinghamshire
Hampshire 50-2 v Yorkshire 554-7 dec
The lights are on at the Ageas Bowl, the umpires have taken a reading with their metres, but we carry on for now.
Hampshire have reached 50-2 as Sam Northeast (13 not out) and Aiden Markram (28 not out) stand firm.
Still plenty of recovery work to do for the hosts.
Notts 263 & 0-0 v Somerset 403
12 overs left in the day's play - conditions permitting.
A more than handy lead of 140 for Somerset but Notts won't dwell on that for now.
This passage of play is all about survival.
The Bens - Slater and Duckett, to open the innings.
Lewis Gregory to bowl.
He's had a quiet game, hasn't he?
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Middx 265 v Lancs 250-4
Rob Jones gets a single off Dawid Malan to move to 50 off 79 balls with nine fours.
It also gets Lancashire to 250.
That's his second 50 at this level.
Notts 263 v Somerset 403 - lead by 140
Image source, Getty ImagesIt's all ended in rather a hurry.
Stuart Broad has done it again and he wraps up the innings by castling Jack Leach.
That's given him figures of 5-73. Still advantage Somerset but Broad has kept the hosts in the game.
Durham 224 & 0-1 v Sussex 202 - Durham lead by 22 runs
Durham are back out there for the start of their second innings as the shadows lengthen across the outfield.
Terrible start though as Cameron Steel is trapped leg before by Ollie Robinson just five balls in.
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Notts 263 v Somerset 400-9
Two wickets in two balls for Stuart Broad!
He gets some revenge on Lewis Gregory and a fine attacking innings comes to an end.
He edges to Duckett at first slip.
The Jacks are at the crease. Leach and Brooks.
Notts 263 v Somerset 400-8
The sub is that man Leverock as Stuart Broad prizes out Josh Davey via a top edge top fine leg.
Hampshire 28-2 v Yorkshire 554-7 dec
Also getting a bit darker at the Ageas Bowl, but they're not coming off just yet.
Sam Northeast and Aiden Markram trying to dig in and show some resistance for Hampshire after the early loss of both openers.
Still another 13 overs to bowl before stumps in theory.
Surrey 395 v Essex 202-4
Umpires Nick Cook and Richard Kettleborough are out in the middle at The Oval taking a light reading.
They don't look like they're that keen on an immediate resumption as there's a thin matt on the wicket and they're not in their white coats.
Middx 265 v Lancs 231-4
It's all over - but a fine innings from Haseeb Hameed as he pushes at a ball from Dawid Malan, who takes the catch off his own bowling.
Dane Vilas is the new batsman.
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Notts 263 v Somerset 403-7
Image source, Getty ImagesHe's already made a telling contribution with six wickets in the Notts innings yesterday.
He drives Luke Wood through the off side off the back foot for his 50, his sixth at this level.
47 balls, four fours and three sixes.
A Davey pull off a short ball yields four more - and there's the Somerset 400.
Notts 263 v Somerset 394-7 - lead by 131
Stuart Broad is fuming after that Gregory onslaught and fires in some short balls to Josh Davey, one of which he swipes away with a cross-batted shot for four.
The fifth ball of the over compels him to back away and Davey ends up on his backside.
Next there's a no-ball and a missed leg glance off a wide one ends the over. Phew!
Durham 224 v Sussex 202
Bowled him and all out!
Chris Rushworth once again sends a stump cartwheeling into the distance as he cleans up Mir Hamza's off pole.
It means Luke Wells is left stranded two short of his century and Sussex will concede a first-innings deficit of 22 runs as they are dismissed for 202.
Rushworth finishes with figures of 4-41 for the hosts.
Durham 224 v Sussex 200-9
Sussex are still frustrating Durham's bowlers by hanging in there for their 10th wicket.
Luke Wells has now moved to 97 with Mir Hamza on a very watchful 7 at the other end.
200 up as well for them and a first batting point.
Notts 263 v Somerset 384-7
It's a hard hat area in Trent Bridge as Lewis Gregory belts Stuart Broad for successive sixes and Somerset hurtle towards maximum batting points.
He takes a couple of twos off Jake Ball in the next over to move to 49.
Surrey 395 v Essex 202-4
It's got gloomy all of a sudden south of the Thames and the umpires have decided to take the players off for bad light.
Essex's Dan Lawrence tucks his bat under his arm and trudges off 13 shy of a century.
Unsure how long we might be off for here.
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Here's the latest at Grace Road, Bristol and Cardiff:
Northants are away to Glamorgan and have reached 148-0 but remain a long way behind, trailing by 422.
Vasconcelos is on 85 and Rob Newton has 51.
Gareth Roderick and Benny Howell are at the crease for Gloucestershire and the home side have reached 150-4 against Derbyshire.
The hosts trail by 141.
Leicestershire have recovered to 134-2 after losing Paul Horton and Hasan Azad with just 24 runs on the board but Worcestershire still lead by 419.
Hampshire 11-2 v Yorkshire 554-7 dec
Hampshire in all sorts of bother as they lose both openers now.
Joe Weatherley is Duanne Olivier's first victim of the innings as he fine edges through to wicketkeeper Jonny Tattersall.
Sam Northeast and Aiden Markram now together at the crease, both on nought.
Durham 224 v Sussex 195-9
Martin Emmerson
BBC Newcastle
Image source, Getty ImagesArrange these words: Sussex, hook, the, off and wriggled.
Durham must be kicking themselves now as Luke Wells looks set for his fifth championship century against them and his third in Chester-le-Street.
But he should have been gone long ago, as should Sussex. They were in disarray when Ben Raine should have run him out for eight, but he missed the target from 10 yards with the batsman marooned.
He was then dropped in the slips, while still on eight. But at tea, he has dragged his side from the abyss and now sits on 92 runs.
There's every reason to think he will reach three figures again because he's looked in little trouble in the afternoon session and although last man Mir Hamza only has seven he has looked quite calm in the middle too.
Durham had Derbyshire at 68-5 on day one in Derby last Friday and lost the match. Today Sussex were 71-7 and then 159-9.
Notts 263 v Somerset 359-7 - lead by 96
Frustration for Notts as Lewis Gregory is squared up by Fletcher and edges through the vacant gully for four.
That takes him to 29.
A Fletcher bouncer is pulled to long leg for a single.
Josh Davey nudges the last ball to long leg for one.