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The Oval: Leaders Surrey bowled out for 84 by Lancashire to lose by 123 runs
Lancs now the only unbeaten side left in the County Championship
Wantage Road: Kent beat Northamptonshire by an innings and 15 runs
After Tuesday wins for Hampshire, Essex & Somerset, four games still going in Div Two
Sophia Gardens: Sussex last pair salvage draw against Glamorgan
Leicester: Divission Two leaders Durham held to draw by Leicestershire
New Road: Worcestershire hang on to draw with Derbyshire
Headingley: Yorkshire draw with Gloucestershire
Leicestershire 422 & 64-3 v Durham 517-6 dec & 343-3 dec - Leics need 439 to win
Matt Parkinson comes into the attack for Durham.
He saw his brother Callum belted for a few sixes this morning as Durham thrashed out a few more runs before declaring.
Matt will get some overs with the reasonably new Kookaburra before lunch. Four singles from his first.
At the other end, Ben Raine (3-17) returns and replaces the luckless Matt Potts.
Northants 237 & 304-8 v Kent 621
Northants go past 300. Ben Sanderson has 34, Jack White has 14, one short of his career best, and the partnership is 29.
These two average single figures with the bat after nearly 120 combined first-class matches.
Kent getting everso slightly frustrated.
Leicestershire 422 & 52-3 v Durham 517-6 dec & 343-3 dec - Leics need 439 to win
Colin Ackerman gets Ray Toole away for a boundary to bring up the Foxes fifty.
It's been a tough morning and there's still half-an-hour left to lunch.
Ackermann has 17 and Handscomb is unbeaten on 13.
Sussex 50-2 chasing 359 to beat Glamorgan
We've lost 15 overs to rain but the players are back out with Toms Clark and Alsop guiding them to 50.
There are 72 rovers emaining - maybe more if the hosts continue with their dual-spin attack - given the nature of the pitch, the target for a Sussex win looks a long way away.
Leicestershire 422 & 41-3 v Durham 517-6 dec & 343-3 dec - Leics need 439 to win
Matt Potts goes close again!
He draws a thick outside edge from Peter Handscomb's bat and it flies past Alex Lees at third slip for four.
Can Handscomb and Colin Ackermann make it through to lunch?
You feel home hopes of salvaging something from this match rest largely on their shoulders.
Northants 237 & 294-8 v Kent 621
Kent have seen enough pace bowling. Leggy Joe Denly is thrown the six-over old ball to bowl his 40th over of the second innings. Some effort this. He has 3-128.
First ball is a one-bounce four from Jack White straight back over his head. A couple of inside edges and a half-hearted LBW appeal after an inside edge later, Northants are 90 runs behind.
Northants 237 & 288-8 v Kent 621
Ben Sanderson (33) is playing very nicely indeed for Northants with a couple of fine cover drives for four. It's a shame for him that the main motivation at the moment is for his side to avoid an innings defeat.
Jack White, career average of six, is watching and learning, he produces a classy cover drive himself off Wes Agar for a couple.
The deficit is down to double figures.
Yorkshire 550-9 dec & 21-0, Gloucestershire 464
Yorkshire openers Adam Lyth and Fin Bean showing no immediate sign of any urgency second time around as they get a nice bit of Kookaburra practice.
Eight overs gone. Just one boundary between them.
Worcestershire 237 & 116-4, Derbyshire 578-5 dec
A second breakthrough for Derbyshire as Adam Hose appears to play down the wrong line to off-spinner Alex Thomson, who turns it and knocks back his off stump.
New man is Ed Pollock.
Northants 237 & 275-8 v Kent 621
When your luck is out...
Ben Sanderson slams a straight drive back down the track, Wes Agar contorts his big rig down to his right to get a finger on it and the ball deflects into Tom Taylor's stumps as he was on the walk. No arguments.
Big celebrations from the Aussie. Taylor has to go after a battling 52-ball stint. Jack White is the new man.
Two wickets needed for Kent, who lead by 109.
Leicestershire 422 & 26-3 v Durham 517-6 dec & 343-3 dec - Leics need 439 to win
Leicestershire are in real trouble and it's their former bowler Ben Raine who has put them there.
He sets the trap for Rishi Patel who almost picks out the man on the backward square boundary but gets away with a hook for four.
He fails to heed the lesson, top-edging an attempted hook with the very next ball and Ray Toole gratefully accepts the chance. Patel goes for a brisk 21 off 23 balls.
Seven wickets for Durham and the Foxes are wobbling.
Peter Handscomb joins Colin Ackermann - a lot will be required of them to avoid defeat.
Northants 237 & 268-7 v Kent 621
The new ball has been taken by Kent. Arshdeep Singh will bowl with it first.
Tom Taylor (20) and Ben Sanderson (21) are doing their best to thwart the visitors. The deficit is 117 runs.
Yorkshire 550-9 dec, Gloucestershire 464
On-loan Surrey spinner Dan Moriarty finishes with five wickets as Gloucestershire are finally bowled out, still trailing by 86 runs.
This moribund game is going to take a lot of rescuing.
Leicestershire 422 & 18-2 v Durham 517-6 dec & 343-3 dec - Leics need 439 to win
It's calmed down a little at Leicester but Durham come close to a third breakthrough in their hunt for victory.
Colin Ackermann plays a Matt Potts delivery down on to his boot and it somehow stops dead next to his off stump.
The England bowler seems a little bewildered how that missed. To put it mildly.
Northants 237 & 265-7 v Kent 621
Northants are 119 behind and have avoided the prospect of a record home defeat to Kent.
If Kent do finish this off they will take maximum points from a game for the first time this season while Northants will take one point to leave them 12 behind second-bottom Middlesex - whom they face next week! Big game, that!
Wes Agar breaks the morning's spin dominance but is still bowling with the old ball in the 89th over.
Surrey 360 & 84 v Lancashire 274 & 293
That was Surrey's lowest score since being bowled out for 72 by Hampshire in 2021, at Southampton - and their lowest at The Oval since Essex skittled them for 67 in 2018.
They take six points from the match - a result which will leave the door ajar slightly for the chasing pack.
Worcestershire 237 & 101-3 Derbyshire 578-5 dec
Worcestershire lose their first wicket of the day as debutant Rehaan Edavalath goes for 15.
After a third-ball duck, the Wolverhampton-born Malvern College schoolboy lasted a more promising 62 balls second time round.
New man in is Adam Hose.
Surrey 360 & 84 v Lancashire 274 & 293
It doesn't happen often to Surrey in the Championship, but the Division One pacesetters have been bowled out for double figures.
A fourth wicket of the morning for Will Williams (4-23) ends the champions' second knock on 84 as Lancashire earn a brilliant 123-run win.
Jordan Clark loses patience and skies Williams to Josh Bohannon who has plenty of time to line up the catch.
It's a superb win for Lancashire who shipped an 86-run deficit after the first innings at the Kia Oval but roared back to earn a second win of the season - and what a morale-boosting result it will be.
Will Williams was almost unplayable this morning as Lancashire mopped up the last five wickets this morning for just 27 runs.
The Red Rose remain unbeaten this season and a 20-point haul puts them right back in contention.
Leicestershire 422 & 1-2 v Durham 517-6 dec & 343-3 dec
So close.
Ben Raine gets a bit of movement and induces a play and a miss from Colin Ackermann.
Durham scenting a fifth victory of the season here with two wickets in the first over.
Northants 237 & 237-7 v Kent 621
Not the best ball from Hamid Qadri, dragged down and pulled away by Lewis McManus but it's straight down the throat of Arshdeep Singh, pretty much the only fielder outside the ring, at mid-wicket.
Even bad balls can take good wickets.
Kent need three more.