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Dane Vilas hits 124 and Luke Wells 97 as Lancashire build a big lead against Middlesex.
Nottinghamshire close on 177-5 after following on against Kent at Canterbury.
No play possible on day three at Edgbaston between Warwickshire and Northamptonshire.
Sussex declare on 344-9. Leicestershire close on 221-3, chasing 499 to win.
Glamorgan close on 120-2 after following on against Yorkshire in Cardiff.
Derbyshire close on 398-9 in reply to Gloucestershire's 377 at rain-hit Bristol.
Glos 377 v Derbys 289-6
Josh Shaw is a bit leg side in this over and Anuj Dal is trying to get a bat on it.
The last ball is on target and blocked.
Derbyshire largely untroubled thus far today, though Anuj Dal got a bit lucky with an edge through the slips earlier off Zafar Gohar.
Sussex 262 & 344-9 dec v Leicestershire 108 & 15-1
Sussex are into the wickets!
There is the shot of a man out of form.
Sol Budinger should be getting much further forward than this but it is no more than a tentative prod and that is an easy call for the umpire when he's struck on the pads.
Kent 446 v Notts 265 & 45-1 f/o
Nottinghamshire haven't had much to cheer about but this will raise a smile or two.
Not particularly short from Nathan Gilchrist, but Ben Slater picks up the length superbly and swivel pulls the ball high over mid wicket.
Sussex 262 & 344-9 dec v Leicestershire 108 & 15-0
An effortless drive from Rishi Patel brings him his second boundary.
We could watch shots like that all day. Gorgeous.
Two balls later, Ari Karvelas gets one to bounce up off a length to hit Patel on the glove.
That is the challenge of being an opening batter.
Glos 377 v Derbys 288-6
Josh Shaw is drifting past leg stump and Leus du Plooy follows it but aborts a shot.
Runs here though as Zafar Gohar drops short and is hammered through cover by Anuj Dal for four.
Zafar straighten up his line and Dal defends.
Kent 446 v Notts 265 & 33-1 f/o
Maiden from Aron Nijjar.
A bowling change at the other end with Nathan Gilchrist coming on for Michael Hogan.
His sixth ball is short and pulled through mid wicket by Steven Mullaney for four runs.
Sussex 262 & 344-9 dec v Leicestershire 108 & 4-0
Left-hander Sol Budinger steers one off the back foot through the covers for four off Ari Karvelas to get the run chase going.
Only 100 or so more shots like that and the Foxes will get very close!
Glos 377 v Derbys 282-6
Ed Seabourne
BBC Radio Bristol
A four in between first and second slip. Who'd be a bowler?
"It really has gone perfectly in between them."
Glos 377 v Derbys 282-6
We have our first bowling change of the day, as Josh Shaw replaces Ed Middleton in the attack with a new ball.
Just the one run from the over.
Zafar Gohar will continue at the other end with a slip and a short leg.
He's getting turn but from wide of off stump.
The third ball is short and cut in front of square by Anuj Dal for four.
Close! The fifth ball is edged off a flashing drive between first and second slip for a streaky four. A sharp chance goes begging.
Kent 446 v Notts 265 & 28-1 f/o
It's not raining hard at the moment and the umpires are hoping these pesky grey clouds blow over.
Michael Hogan is bowling round the wicket to Ben Slater, who pads away the ball for four leg byes.
The fifth ball is cut and well stopped by Daniel Bell-Drummond at backward point.
Glos 377 v Derbys 272-6
Leus du Plooy moves to 49 with a back-footed carve through point for four and he gets to 50 with a tuck to square leg off the same bowler.
The Derbyshire captain's rich vein of form continues with his fifth Championship half century of the season.
81 balls with seven fours.
Sussex 262 & 344-9 dec v Leicestershire 108
Image source, Rex FeaturesNow Sussex skipper Cheteshwar Pujara is a player of serious international stature with over a century of Test caps to his name.
But to send his players back out for what turns out to be six balls, before declaring?
Sussex have gained eight runs, but lost two overs of bowling.
And if Leicestershire reach a target of 491, let alone 499, good luck to them.
Kent 446 v Notts 265 & 23-1 f/o
A nervous moment for Ben Slater, who plays down the wrong line to an arm ball from Aron Nijjar.
Steven Mullaney looks organised in defence against Michael Hogan at the other end.
Unfortunately the grey clouds have rolled in and we have more than a little drizzle.
Maiden over. We're staying on for now.
Lancashire 132-3 v Middlesex 194
The umpires have been out in the middle and have decided that we can start at 14:00 at Old Trafford, weather permitting.
There will be a maximum of 59 overs to be bowled
Sussex 262 & 344-9 dec v Leicestershire 108
Six balls, eight runs, one wicket and a declaration!
Ari Karvelas cuts Rehan Ahmed for a boundary and is then run out going for a quick single off the next ball.
Sussex have a lead of 498 - Leicestershire will need 499 to win.
Glos 377 v Derbys 263-6
Not the greatest start for Zafar Gohar, who begins the session with a leg side wide.
The left arm spinner is targeting the rough with two slips and a forward short leg in play. Just the one extra and no runs in the over.
Leggie Ed Middleton will complete the all-spin attack at the other end.
Leus du Plooy gets the first run off the bat since the delay, down the track with a flashing drive.
Kent 446 v Notts 265 & 20-1 - trail by 161
Ben Slater and Steven Mullaney have a mountain to climb in a game you'd suspect Notts need to draw to remain comfortably clear of the relegation zone.
Ben Salter will face Michael Hogan to start the session of play.
Canterbury: Kent 446, Nottinghamshire 265 &20-1
Old Trafford: Middlesex 194, Lancashire 132-3 (No play this morning)
Edgbaston: Northamptonshire 250, Warwickshire 142-4 (No play this morning)
Division Two
Cardiff: Yorkshire 500, Glamorgan 213-7
Bristol: Gloucestershire 377, Derbyshire 261-6 (No play this morning)
Hove: Sussex 262 & 336-8, Leicestershire 108
Glos 377 v Derbys 261-6
If the weather deigns to co-operate, we have 72 overs left today and a tea interval at 3:25.
Time for a result? Possibly.
Derbyshire are still 116 behind Gloucestershire, but the in-form visiting captain Leus du Plooy is still there.
He's 44 not out.
His partner Anuj Dal will face the first ball, unbeaten on three.
Zafar Gohar will bowl.
Yorkshire 500, Glamorgan 213-7
Nick Webb
BBC Radio Wales
Glamorgan have managed one session of firm resistance - but need to find five more in order to save the game.
63 runs were added in 29 overs between the showers, for the loss of overnight half-centurion Kiran Carlson for 64, when he fended a short ball to short leg as Matthew Revis claimed his fourth wicket.
Dan Douthwaite was briefly tempted to hook in the air by Revis as Yorkshire packed the leg-side field, but quickly thought better of it.
Douthwaite, in his first Championship match since April, and Andy Gorvin settled into a pattern of gritty defence as spinner Dom Bess wheeled away unchanged with fielders clustered round the bat.
They have so far shared 40 for the eighth wicket - and the hosts now trail by only 287, with a further 138 to avoid the possibllity of being asked to follow on.