Division One leaders Surrey held to a draw by Kent
Draws also at Northampton and Bristol in D1
Sussex chase down target to beat Derbyshire by five wickets in D2
Glamorgan beat Worcestershire by three wickets with Billy Root 99 not out
Notts 551-8 dec, Middlesex 376 & 248-1
Mark Stoneman becomes the fourth centurion in this match.
It is the 28th of his first-class career, and his fourth in only 12 matches for Middlesex.
Surrey 673-7 dec v Kent 331 & 266-4
Hmm. We said Jordan Cox had been adventurous for Kent. Probably too adventurous.
He sweeps a Gus Atkinson delivery straight down the throat of Sam Curran at square leg.
A catch and two wickets in this Kent innings for Curran, who also hit 126 with the bat. Surrey sniffing blood now but have they left themselves a bit too much to do?
Northants 451 & 250-3, Warwickshire 405
Back underway after tea at Wantage Road - and Warwickshire wicketkeeper Michael Burgess has whipped off his pads to have a bowl as this game awaits its final death sentence at 10 to five.
Burgess has actually bowled once before - when he sent down six overs for Sussex, ironically against Warwickshire, in 2018.
Comic moment - but it harkens back to a past Bears keeper, A C Smith, who regularly used to do the same in the 1960s - and in fact ended up taking 131 first-class wickets.
There's still people here watching though. And listening.
One BBC Radio Northampton listener has rightly just messaged Andrew Radd to remind him that, as long as there is cricket being played, and being commentated on, then there will be people listening.
Sussex 337 & 181-2 v Derbyshire 551-8 dec & 127-7 dec (Sussex need 161 more to win)
Sussex are going for this run chase - and that means taking risks.
Tom Alsop tries to loft Anuj Dal over mid-wicket but doesn't get enough on it and he's caught by Billy Godleman.
Still a very valuable 55 from Alsop - and the bad news for Derbyshire is that departure brings Mohammad Rizwan to the crease, the man who hit 130 in Sussex's first innings.
Sussex 337 & 181-1 v Derbyshire 551-8 dec & 127-7 dec (Sussex need 161 more)
Ali Orr gets his 100 for Sussex - by crashing a massive six into the crowd.
Sussex are really going after Alex Thomson.
Orr's ton has come off 144 balls, with 11 fours and four sixes. The 21-year-old's best first-class score is 119 - and he'll be hoping to surpass that.
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Back under way in the final sessions of our four remaining matches.
Sussex 337 & 173-1 v Derbyshire 551-8 dec & 127-7 dec
This over, not long before tea, has really changed the narrative at Hove.
Sussex need 169 more runs to win off a minimum of 34 overs - around five an over. Totally manageable if they keep hitting like this.
Derbyshire are most likely regretting not making Sussex follow on yesterday when they had the chance.
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Division One
Bristol: Match Drawn. Gloucestershire (337 & 176-3) 13 pts, Lancashire (402) 14 pts
Wantage Road: Northamptonshire 451 & 244-3, Warwickshire 405
The Oval: Surrey 673-7 dec, Kent 331 & 258-3
Division Two
Trent Bridge: Nottinghamshire 551-8 dec, Middlesex 376 & 223-1
Hove: Derbyshire 551-8 dec & 127-7 dec, Sussex 337 & 173-1
New Road: Glamorgan (199 & 334-7, 19 pts) beat Worcestershire (271 & 199, 5 pts) by three wickets
Surrey 673-7 dec v Kent 331 & 258-3
Just the one wicket in the afternoon session as Jack Leaning fell to Sam Curran.
So it was definitely Kent's session - and barring a Surrey flurry straight after tea, they should have done enough to secure a draw at The Oval.
Daniel Bell-Drummond remains unbeaten on 59 while Jordan Cox has come in and hit a lusty 22 off 18.
Northants 451 & 244-3, Warwickshire 405
Tea is taken after a deluge of 152 runs in the session.
But that will not prevent this game ending in a dull draw.
Sussex 337 & 173-1 v Derbyshire
Here we go - this is where Sussex step it up.
Tom Alsop hits spinner Alex Thomson for 20 runs off an over - two big sixes and two fours.
Two overs previous, Ali Orr had also dispatched Sam Conners for two maximums.
Four overs before tea, Sussex were 128-1 - they've hit 45 runs since to move to 173-1, just 169 runs needed to win.
Notts 551-8 dec, Middlesex 376 & 223-1
Mark Stoneman goes to tea on 86, accompanied by Stevie Eskinazi on 4.
Middlesex lead by 48 runs.
The game will end in a draw.
Just a question of going though the motions now - and awaiting Stoneman's century
Hands will be shaken at 10 to five.
Surrey 673-7 dec v Kent 331 & 258-3
Jordan Cox might have been forgiven for having a few butterflies coming in so close to tea.
Not a bit of it. Crashes a six over his shoulder to deep fine leg and is up to 22 off just 16 balls.
Northants 451 & 236-3, Warwickshire 405
Ryan Rickelton and Luke Procter create a minor ripple of history as they take their third-wicket stand to 226.
That beats the 225 posted by Dick Woolley and Dick Wriight at Kettering in 1925 as Northants' previous best for the third wicket in games against Warwickshire.
But just a ball later he holes out on the midwicket boundary to earn Matt Lamb a rare scalp.
Surrey 673-7 dec v Kent 331 & 235-3
A sniff of renewed hope for Surrey?
Jack Leaning goes for 43 off 116 balls as Sam Curran uproots his off stump to snag his second wicket of the innings.
Had that happened an hour ago, it would really have made things interesting but there's still 20 minutes to tea and if Surrey can strike again, we might be in for a tense final session.
Nottinghamshire 551-8 dec v Middlesex 376 & 201-1
At Trent Bridge of course! And, no, it wasn't the tea lady.
Ben Duckett claims only his second ever first-class wicket as Sam Robson feathers an out-swinger into the gloves of Tom Moores.
It will probably make little difference to the result - unlike Robson's century which has surely done enough to secure his side a draw.
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There's been a wicket!!! The first one since lunch. But where?
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Notts will be giving the tea lady the cherry next.
Northants 451 & 226-2, Warwickshire 405
Northants debutant Ryan Rickelton completes his century.
Nottinghamshire 551-8 dec v Middlesex 376 & 199-0
Ton up for Sam Robson at Trent Bridge, via a lovely clean drive to the boundary.