England's Harry Brook scores 100 not out off 69 balls for Yorkshire in draw against Leicestershire
Sam Cook takes 6-14 as Essex dismiss Notts for 80 to win by 254 runs at Trent Bridge
Ryan Higgins scores 221 for Middlesex against Glamorgan
Sussex bid for unlikely win over Northants ended by bad light
Kent 284 & 15-2 v Somerset 403
Anthony Gibson
BBC Radio Somerset
I think Ben Compton can count himself as pretty unlucky.
It was a dreadful delivery from Jake Ball, miles down the leg side and he went to take advantage of it and in the umpire's opinion was he got an edge to it.
It was a good catch by James Rew.
Since then, Kent have also lost a second wicket...
Yorkshire 72-2 v Leicestershire 354
The umpires have inspected and the plan is to take an early lunch at Headingley at 12:30 BST.
They will next inspect the ground at 12:45.
Sussex 433-8 v Northants 371
Lovely shot by Ollie Robinson, whipping a Tremain leg side half tracker through mid wicket for four.
Maximum batting points are nearly in reach for Sussex.
Durham v Hampshire - match abandoned
Martin Emmerson
BBC Radio Newcastle
The captains have shaken hands on a draw at midday on day four. Game abandoned without a ball bowled.
Middlesex 506-6 v Glamorgan 620-3 dec
Ryan Higgins guides a Mir Hamza delivery down to the vacant boundary at third man to reach his 150.
Middlesex are now over 500 as the runs keep coming in this match.
Higgins needs 49 more to match his career-best score of 199, and he is not yet halfway to Sam Northeast's 335 not out!
Durham v Hampshire - match abandoned
Image source, Getty ImagesThe latest inspection has done little to allay fears over a damp outfield - and given that more rain is likely to come this afternoon, this game has been called off.
Sussex 425-8 v Northants 371
Ollie Robinson tries to flick Tremain over the keeper's head but doesn't make contact on this occasion.
Michael Finan bowls for the first time today and Carson stays in the crease, reaching out for a wide ball and dabbing to point for a single.
That brings up his ninth career 50 in 40 balls with four fours and three sixes.
Kent 284 & 10-2 v Somerset 4-3
Both openers gone inside five overs!
Tawanda Muyeye picks out Tom Banton at point and Somerset have a second wicket. They might be sniffing an unlikely win here...
Jack Leaning joins his captain Daniel Bell-Drummond in the middle.
Notts 293 & 18-3 v Essex 253 & 374-9 dec
Fabulous stuff again from Sam Cook.
Ben Slater comes and goes as Cook, coming round the wicket, puts it in that awkward spot on a good length on and around off-stump.
Slater is drawn forward and it is well pouched by the safe hands of Simon Harmer at second slip.
The Notts innings is in tatters!
Kent 284 & 10-1 v Somerset 403
Jake Ball sends one down the leg side and Ben Compton's eyes light up... but he feathers an edge behind to the wicketkeeper James Rew and is the first man to go.
It's Ball's first Somerset wicket.
Kent captain Daniel Bell-Drummond heads to the crease at number three.
Notts 293 & 17-2 v Essex 253 & 374-9 dec
Dave Bracegirdle
BBC Radio Nottingham
Terrific stuff this from the Essex seamers and both openers have now gone.
There's been times in this game when Essex have been slightly on the back foot; Nottinghamshire building a first-innings lead of 40 and it looked as if it was going to be far more until Sam Cook picked up a hat-trick - bang, bang, bang.
Well, he's also doing damage to Nottinghamshire's hopes here on day four.
Sussex 418-8 v Northants 371
The first wicket of the county season for Chris Tremain comes probably too late to change the course of this match.
In truth it's a bit of a leg stump half volley. Hudson-Prentice is down the track and lofts a drive to George Bartlett at long on.
The new batter is Ollie Robinson.
Warwks 333 v Worcs 360 & 237-2
Image source, Getty ImagesThe weather has really caught up with this game after just the one session of play lost up to the end of day three.
The clouds are slate grey and there are still concerns over damp patches in the field after overnight rain.
Notts 293 & 17-2 v Essex 253 & 374-9 dec
Joe Clarke is the new batter and is struck on the pads first up by Sam Cook.
Not out.
But the target of 335 suddenly looks miles away for Notts.
Sussex 418-7 v Northants 371
Sussex have a pretty useful tail! You heard it here first.
The Sussex number nine Jack Carson moves to 47 off 35 balls with a mighty straight drive all along the ground for four runs.
Notts 293 & 17-2 v Essex 253 & 374-9 dec
Sam Cook, you absolute ripper!
Haseeb Hameed's off-pole is lying on the floor and both Notts openers are back in the hutch.
Superb stuff from the Essex seamer!
Notts 293 & 17-1 v Essex 253 & 374-9 dec
Ben Slater is the new batter and he gets off the mark with a nice offside push for two.
Then at the other end, Sam Cook cuts Haseeb Hameed in half with a super delivery that jags back.
Cook and Porter really are one of the best new-ball pairs on the circuit.
Sussex 407-7 v Northants 371
Jack Carson is on for his ninth first-class 50 here.
He brings up the 50 partnership with Fynn Hudson-Prentice via a flashing drive off Chris Tremain to long off for one.
Just 40 balls for that.
Notts 293 & 15-1 v Essex 253 & 374-9 dec
Image source, Rex FeaturesBen Duckett is out!
What a response from Jamie Porter as coming round the wicket, he uproots Duckett's off-stump.
That is a fantastic delivery and a great sight for an opening bowler!
Notts' task has got a whole lot harder.
Sussex 405-7 v Northants 371
Fynn Hudson-Prentice is forward to Ben Sanderson, driving an easy single to long off. Earlier today, Sanderson took his 490th Northants wicket in all formats with the dismissal of Danny Lamb.
That puts him level with Neil Mallender for the club.
A rare Sanderson no-ball is followed two deliveries later by a short ball hooked over square leg for six.
Four more runs to Jack Carson with a whipped push through mid on. That brings up the Sussex 400 in the 89th over.
Carson swats the last ball to long on... he's dropped by Luke Procter and runs two.