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
Sussex 337 & 293-3 v Derbyshire 551-8 dec & 127-7 dec
Sussex know they only need a run a ball to claim their first County Championship win in more than 14 months.
Rizwan and Rawlins take five singles off that over.
Sussex 337 & 288-3 v Derbyshire 551-8 dec & 127-7 dec
Oh, a lovely paddle sweep from Mohammad Rizwan sends Mark Watt away for four to deep fine leg.
Delray Rawlins is the new man in. The pair combine for six off that over.
Surrey 673-7 dec v Kent 331 & 352-4
Ollie Robinson hits his third boundary and Kent finally edge into the lead for the first time in this match.
Centurion Daniel Bell-Drummond follows that with another boundary to go to 107 and the lead grows to 10
Surrey stil need six wickets. 12 overs left. The likelihood of this game ending in a draw has now increased significantly.
Sussex 337 & 281-3 v Derbyshire 551-8 dec & 127-7 dec
Mohammad Rizwan seems to have shaken off that injury and moves past his half-century with a boundary.
To go with the 130 he hit in the first innings.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Rizwan's injury and the Orr wicket have resulted in the required rate creeping up to 5.18 an over.
Sussex 337 & 274-3 v Derbyshire 551-8 dec & 127-7 dec
Another twist.
With Mohammad Rizwan clearly in discomfort, Sussex could have done with Ali Orr staying in but he's caught at deep cover by Hayden Kerr trying to launch Luis Reece for six.
A fantastic innings from the youngster, though, his highest-ever first-class score.
Surrey 673-7 dec v Kent 331 & 337-4
Daniel Bell-Drummond has his second ton of the match at The Oval - he equals his first-innings total of 102 via a boundary.
Kent have passed their own first-innings score and trail by just five.
Rizwan then sprints for a single off the first ball of the next over. Not that wise. He's struggling.
Interesting twist, Rizwan has just picked up a niggle rushing for a quick single.
He's hurt here. Could be his hamstring. Does not look comfortable at all.
Only two runs off that over as a result.
Sussex 337 & 269-2 v Derbyshire 551-8 dec & 127-7 dec
It helps in this situation when you have a batter the class of Mohammad Rizwan at your disposal.
He just opens up the face of the bat to guide a slightly loose Luis Reece delivery for four.
Those are the only runs of the 61st over, though - 73 runs required off 15 overs, eight wickets in hand.
Surrey 673-7 dec v Kent 331 & 319-4
Proceedings are continuing at The Oval but that may just be a gentlemanly attempt to get Daniel Bell-Drummond his second century of the match - the Kent batter currently stands on 92no.
Kent trail by 23.
Sussex 337 & 262-2 v Derbyshire 551-8 dec & 127-7 dec
Getting to the stage where Derbyshire are having a bit of a tete-a-tete to work out how best to restrict this Sussex run chase.
They aren't going to win this game now, but how can they avoid losing it?
Sussex 337 & 253-2 v Derbyshire 551-8 dec & 127-7 dec
Worth pointing out again that Sussex have not won a County Championship match since last April.
This is a great chance to end that winless streak. The required rate is now down to 4.9 an over with Ali Orr (131no) and Pakistan batter Mohammad Rizwan (39no) picking up the odd boundary.
Surrey 673-7 dec v Kent 331 & 300-4
Daniel Bell-Drummond moves on to 78 with a stylish boundary sweep.
Kent are only 41 behind.
Let-off for OIlie Robinson as a Conor McKerr delivery bounces up and he gets his bat up, and it just falls millimetres shy of Ben Geddes at short leg.
Sussex 337 & 236-2 v Derbyshire 551-8 dec & 127-7 dec (Sussex need 106 to win)
Derbyshire are in "prevent boundaries" mode. That means no slips.
But Mohammad Rizwan is using that to his advantage with some inventive shots, the latest of which sees him hoik an edge over the wicketkeeper and it races away for four.
Notts 551-8 dec, Middlesex 376 & 261-1
Nottinghamshire and Middlesex ends up, as seemed the most likely result this morning, as a draw.
Division Two leaders Notts take 15 points from the game, compared to 14 for second -placed Middlesex.
That nudges Notts an extra point clear at the top but it's a moral victory for the visitors.
Fuelled by centuries for openers Sam Robson and Mark Stoneman, they performed nobly to salvage a draw after being made to follow on.
Northants 451 & 273-4, Warwickshire 405
Hands are duly shaken at Wantage Road as Northamptonshire draw with reigning county champions Warwickshire.
Northants take 15 points, while the Bears have to settle for 12.
Sussex 337 & 226-2 v Derbyshire 551-8 dec & 127-7 dec (Sussex need 116 to win)
Mohammad Rizwan smashes Alex Thomson over the ropes to cow corner.
That brings the rate down to exactly five - 23 overs remain. Then he sweeps a very thin shot to fine leg for a four to begin the next over.
This is going to be close.
Sussex 337 & 210-2 v Derbyshire 551-8 dec & 127-7 dec (Sussex need 132 to win)
Sussex opener Ali Orr has his highest first-class score, beating his previous best of 119 - he's up to 123no.
It's only the 21-year-old's second County Championship century - so he will long remember it, but even more so if it helps propel his side to victory.
The required rate is hovering around five an over - Sussex are going to keep things fairly sensible it seems and then perhaps really unleash in the final few overs. There are 26 remaining.
Image source, Getty ImagesNorthants 451 & 267-4, Warwickshire 405
A nice little moment for Michael Burgess to treasure as he claims his first wicket in first-class cricket.
The Warwickshire wicketkeper, having removed his pads to bowl, has Rob Keogh caught behind by the man who has replaced him with the gauntlets, fast bowler Craig Miles.
As one of the commentary team suggests, in years to come, cricket statisticians of the future will look back at the scorecard of this game - and assume that must be an inputting error by the scorers.