England's Stuart Broad claims 4-68 for Nottinghamshire at Lord's.
Keaton Jennings retires on 189 as Lancs lead Somerset by 113 on first innings.
Nick Browne makes 159 for Essex against Kent, Tom Westley out for 148.
James Fuller takes 6-37 as Hampshire beat Northants by an innings.
Yorkshire chasing target of 201 to beat Sussex at Hove.
Ajeet Dale claims 6-41 as Gloucestershire bowl out Worcestershire for 157.
Rain ends play early with Glamorgan 153-5, 318 behind Durham.
Middlesex 197-6 v Notts 364
Three runs come off Liam Patterson-White's over and that takes Middlesex through to a nervous lunch.
Notts had the better of that session of play following a closely fought battle between the sides on Friday evening.
Much will depend on the batting of Higgins and Hollman, who resume in 40 minutes with the hosts still 167 behind.
Northants 149 & 24-5 (f/o) v Hants 482-8 dec
Gareth Berg blocks out Mohammad Abbas' latest over and Northants go to lunch needing another 309 to make Hampshire bat again after James Vince enforced the follow-on.
The visitors have taken nine wickets in the session - James Fuller returning 6-37 in the first innings and Kyle Abbott claiming 3-9 from six overs in the second.
Lewis McManus will not bat for the home side because of a finger injury, so Hampshire only need four more wickets to win.
Sussex 361 & 49-2 v Yorks 298
Haines picks up four more as he pounces on an overpitched ball from coad and drives through cover.
He's batting with his captain Cheteshwar Pujaraa now after the loss of Tom Alsop and is now 22 not out.
Kent 13-0 v Essex 451-5 dec
Zak Crawley and Ben Compton make it through half a dozen overs unscathed to the lunch break.
Only a deficit of 438 to eat into this afternoon after Nick Browne's 159 and Tom Westley's 148 set up the Essex score.
Middlesex 195-6 v Notts 364
Hollman is on strike, facing Lyndon James.
The last ball squirts off an inside edge away from keeper Clarke for four runs.
Sussex 361 & 42-2 v Yorks 298
This match is on a knife edge after the wickets of Orr and Alsop in quick succession.
Bess is bowling in his shades as Haines defends.
A bit of excitement as Haines tries to cut the ball but can't get it away. Maiden over.
Pennington c Bracey b Dale 6 (Worcs 157 v Gloucs 231)
Image source, Rex FeaturesWell bowled, Ajeet Dale, who has Dillon Pennington caught behind to finish with career-best figures of 6-41.
Tom Price is unable to add a five-for to his opening-day century, but provided excellent support with his 4-58.
Gloucestershire lead by 74, but lunch will now be taken ahead of their second innings.
No further joy for Durham at Sophia Gardens where Glamorgan are 46-1 with David Lloyd 26 not out and Marnus Labuschagne on 15.
Labuschagne earlier produced career-best bowling figures before the visitors declared on 471-9.
Somerset 441 v Lancashire 440-4
Lancashire go to lunch just one adrift of Somerset's total.
An eventful morning with 139 runs scored off 28 overs, but the departure of Keaton Jennings retired hurt on 189 was the big turning point.
Two quick wickets just after and Somerset may not be facing as big a deficit as they were fearing at one point.
Alsop lbw b Coad 0
Yorkshire are roaring back into this match. Sussex are 42-2.
Coad fires a ball in straight and Alsop shuffles in front of his stumps.
The batter is not happy but he has to go.
Middlesex 189-6 v Notts 364
Vital stand for Middlesex between Higgins and Hollman.
Patterson-White is cut square of the wicket by Higgins for one - and we'll get one more over in before lunch.
Somerset 441 v Lancs 436-4
Scott Read
BBC Radio Lancashire
Concern for Keaton Jennings who limped off with what looks like a muscle injury and Lancashire will be hoping it's not calf related.
He's suffered from calf problems over the last couple of season and the sight of the Lancashire physio stretching out his left leg will be a worry.
For Somerset, it's presented an real opportunity, Jennings looked like he could bat all day. A first-innings lead and maximum batting points is still very much on for the Red Rose.
Northants 149 & 17-5 v Hants 482-8 dec
Quote MessageOne of the most bizarre sessions of cricket I've seen for a long time - Northamptonshire have managed to lose nine wickets."
BBC Radio Northampton's Andrew Radd
Ali Orr run out Coad 26
Run out backing up! Absolute horror dismissal.
Tom Haines drives back to the bowler, who gets a hand on it before the ball clatters into the stumps at the non-striker's end.
Third time he's suffered this fate - and straight after a confident pull shot and drive, both yielding fours.
Yorkshire have a breakthrough in a way they could scarcely have imagined.
The new batter is Tom Alsop.
Kent 10-0 v Essex 451-5 dec
Image source, Rex FeaturesEssex have done what was required this morning, scoring 162 off only 23.4 overs to bring up the 450.
Now they have chance to attack the Kent batting, albeit without the injured Sam Cook.
Zak Crawley is opening, and with other openers around the country scoring hundreds this week, the spotlight is on.
First ball from Jamie Porter and he edges it through a vacant third slip area for four. Not the most convincing shot.
Next over and he is gifted a legside half-volley from Shane Snater and that is properly dispatched to the boundary.
Cobb run out 1 (Northants 149 & 16-5 v Hants 282-8 dec)
In the words of David Bowie and Queen: "Insanity laughs, under pressure we're breaking."
Josh Cobb plays the ball down to long leg and calls Luke Procter for two, but Mohammad Abbas' throw is accurate and Ben Brown whips off the bails.
Cobb is out for the second time this morning.
Middlesex 186-6 v Notts 364
Shot! Hollman drives the Notts spinner for four through the off side.
A single pulled away to the leg side and Higgins picks up one more with another leg side nudge.
One more single to Hollman.
Tweet us at #bbccricket
From Methers: "#bbccricket, external This Hampshire bowing attack is dangerous and that’s an understatement."
You'll get no argument from us about that. 'Lucky' for Northants that Keith Barker isn't fit for this game.
Middlesex 179-6 v Notts 364
Higgins gets four more as he pulls a short ball away to mid wicket off Paterson.
He's batting with Luke Hollman after the wicket of Simpson a few minutes ago.
first over of spin today as Liam Patterson-White will bowl from the Nursery End.
Keogh lbw Abbott 0 (Northants 149 & 14-4 v Hants 482-8 dec)
Image source, Getty ImagesThis is some spell from Kyle Abbott. He now has 3-7 from four overs as Rob Keogh is trapped leg-before for a five-ball duck. Northants now in freefall, it would seem.