Dan Worrall takes 5-25 as Surrey defeat Warwickshire by an innings and 97 runs
Jamie Porter takes 6-34 as Essex earn a 125-run first innings lead over Middlesex
George Balderson scores second Championship century for Lancashire
Hampshire's Nick Gubbins scores 139no as they leave Somerset a target of 502
Colin Ackermann hits 93 not out as Leicestershire beat Gloucestershire
Billy Root makes unbeaten 84 but Glamorgan lose to Worcestershire
Dutch all-rounder Bas de Leede hits maiden hundred for Division Two leaders Durham
Matthew Revis scores 106 as Yorkshire set Derbyshire distant target of 571
Northants 232 v Lancs 506-9
Beautiful violence from Tom Bailey who has clobbered back-to-back sixes off Tom Taylor, the second of which has left Wantage Road.
His 10th half-century comes up in 67 balls with six fours and that maximum.
The 32-year-old is suddenly onto 63* and might have an eye on his career best of 75.
The lead is up to 274.
Leics 54-2 v Gloucs - target 168
It's suddenly raining boundaries at Grace Road as Colin Ackermann pulls Zaman Akhter for four and then steers the next ball through point for another.
Three boundaries in an over for the second one in a row as he steers Akhter's fifth ball down to third man to progress to 21 not out.
Another 114 required by the home side.
Quote Message24 off the last two overs has made a heck of a difference to the whole feel of the morning."
BBC Radio Leicester's Richard Rae
Glamorgan 30-3 v Worcs - target 260
Two in three balls!
Ben Allison bowls the dream delivery - angled in, before seaming away and taking the top of Zain ul Hassan's off-stump.
A mini-collapse for Glamorgan on the stroke of lunch, and Kiran Carlson joins Sam Northeast to try navigate this tricky period.
Leics 42-2 v Gloucs - target 168
Luke Charlesworth comes in to start his third over but that's short and wide and is cut away for four by Lewis Hill.
Striving for a yorker, he doesn't quite get it right and Hill whips the ball away to the mid-wicket boundary.
He next one is also full of length and Hill steers is past mid-on for the third four of a very productive over. He is 28 not out.
Glamorgan 30-2 v Worcs - target 260
Lovely bowling from Logan van Beek, who draws Colin Ingram into the drive, and Jake Libby clings on at third slip.
A big breakthrough for Worcestershire as we head towards lunch.
Essex 304 v Middlesex 50-4
After being 25-4 after 7.2 overs John SImpson and Max Holden have dug in for 13 overs and the runs are finally starting to flow.
That's five scoring shots in 11 balls, all boundaries, and Middlesex are 254 behind.
Leics 30-2 v Gloucs - target 168
If you have been following events closely at Grace Road, you will know that Zaman Akhter is on a hat-trick of sorts, having taken wickets with his final two balls of the Leicestershire first innings.
That's a good delivery first up, but Lewis Hill avoids getting a touch and then picks up a single to give the strike to Colin Ackermann, who is fortunate to see an inside edge just miss the stumps to end the over.
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There was no Championship cricket played in August but Surrey clearly didn't lose their edge during the hiatus.
Victory over Warwickshire has pushed their points total beyond 200, but is winning the title now a formality with two games left to play?
What do you think, Surrey and Essex fans?
Essex 304 v Middlesex 38-4
After 29 straight dot balls, John Simpson carves Simon Harmer to the ropes for the first runs off the South African spinner.
Max Holden flays Umesh Yadav away to begin the next over. That's consecutive boundaries and more runs in one minute than the previous half-hour combined.
Northants 232 v Lancs 474-9
What a knock. George Balderson falls one shy of his career-best, top-edging an attempted sweep to Sam Whiteman off spinner Rob Keogh.
Jack Blatherwick will bat, joining Tom Bailey who is on 42*.
The lead is 242.
Durham 505-9 dec v Sussex
A single by George Drissell is the final scoring stroke of Durham's first innings as Scott Borthwick decides to give his bowlers a chance to pick up one or two wickets before lunch and declares.
Henry Crocombe is thus denied a potential five-for and finishes with figures of 4-93.
Bas de Leede completed his maiden Championship century for Durham during the morning and Graham Clark made 128 - the Division Two leaders are 239 ahead.
Durham 505-9 v Sussex 266
It's true to say - we assume - that there haven't been many column inches written about the batting ability of George Drissell.
But the Durham number 11 lifts a ball from Henry Crocombe back over the bowler's head for four as the Durham total pases 500.
Emboldened by that, Drissell strokes the next ball through the covers for another four.
Essex 304 v Middlesex 29-4
Three straight maidens for Simon Harmer to start with. Umesh Yadav's first three have gone for two runs.
Suffocating stuff from the hosts.
Image source, Rex Features
Northants 232 v Lancs 466-8
The first of his 230-ball knock. He gets down on one knee and sweeps spinner Rob Keogh over deep backward square for a maximum. He can certainly do it when he wants to.
Balderson is on to 113, just three shy of his first-class best.
Glamorgan chief executive Hugh Morris is to step down as the county's chief executive after 10 years in the role.
Read MoreDurham 495-9 v Sussex 266
Henry Crocombe bangs one in short, Graham Clark cuts and substitute Dan Ibrahim takes the catch, diving to his left at cover.
Clark batted for just over three hours, faced 189 balls and hit 15 fours - a great innings for his team.
Crocombe, though, now has 4-84 and a five-for is there for the taking.
Leics 22-2 v Gloucs - target 168
That's more like it - Lewis Hill drives Dom Goodman past mid-off for four.
And the Leicestershire skipper repeats the stroke in the next over from Josh Shaw with the same result.
Hants 308 & 120-2 v Somerset 137
James Vince has started superbly here.
The Hampshire skipper belts Shoaib Bashir over cow corner for four, before driving gloriously through the covers for four more.
Trademark Vince - he has 21 from 21 balls, and Hampshire's lead is now 295.
Glamorgan 17-1 v Worcs - target 260
Colin Ingram gets on the front foot, and belts Joe Leach through the covers for four.
That's an imposing shot, a real statement of intent.
Essex 304 v Middlesex 27-4
Image source, Rex FeaturesMore good news for Middlesex... Indian quick Umesh Yadav is coming on to bowl at the other end from Harmer for the first time in England.
By my count the 35-year-old is one wicket away from 1,000 in senior cricket, 288 of them coming in international cricket.
Middlesex are still 277 behind with six wickets remaining.