Somerset will stay up if they beat Middlesex
Middlesex down if they lose & Hampshire win or draw
Hampshire out for 116 at Edgbaston
Hants relegated if they lose & Somerset win
Worcs promoted if they take 9 Durham wickets inside 110 overs
Northants & Notts also chasing promotion
Worcestershire 335 v Durham
Mark Wood finishes off Worcestershire's first innings, bowling Ed Barnard.
The England fast bowler claims his first wicket as Barnard falls short of a century.
A good performance from Worcestershire's bowlers means they're up.
Sussex 565 v Nottinghamshire
Billy Root bowls Stuart Whittingham for 22 as Notts finally bowl out Sussex for an impressive 565.
After being reduced to 107-5, centuries from Michael Burgess and Chris Jordan helped the hosts recover and put them in control over the promotion-chasing visitors at Hove.
Sussex 559-9 v Nottinghamshire
Billy Root gets a second wicket as Jofra Archer picks out Matthew Carter at long off.
Sussex opt to bat on as Abidine Sakande joins Stuart Whittingham at the crease.
Somerset 236 & 70-3 v Middlesex 142
Image source, Rex FeaturesSomerset end the afternoon session of day two with a lead of 164.
James Hildreth is on 24, Tom Abell has moved to five not out.
If Somerset win, they survive.
Warwickshire 188 v Hampshire
Fidel Edwards completes his five-wicket haul as he sends Ryan Sidebottom's stumps tumbling.
The perfect start to the match for Hampshire.
Worcestershire 319-9 v Durham
Is Graham Onions going to bow out for Durham with a five-wicket haul?
The 35-year-old seamer, who announced he will leave the county at the end of the season, bowls Josh Tongue.
He has 4-68.
Warwickshire 186-9 v Hampshire
Oliver Hannon-Dalby is bowled by Fidel Edwards and tea will now be delayed as Hampshire look to wrap up Warwickshire's first innings.
Hampshire now have three bowling bonus points and should Middlesex lose - a score of 350 in their first innings inside 110 overs will be enough to secure survival.
Somerset 236 & 70-3 v Middlesex 142
Anthony Gibson
BBC Somerset
If you look at Middlesex man for man, they have to be one of the strongest sides in the first division, ditto Somerset when they’re at full strength.
Both of these sides have failed to play to their potential, it’s as simple as that and are now engaged in this absolute dogfight of a relegation battle.
Image source, Rex FeaturesSussex 542-8 v Nottinghamshire
Sussex continue to bat on at Hove much to the annoyance of Nottinghamshire.
Jofra Archer (66 not out) and Stuart Whittingham (6 not out) have added 25 runs in six overs.
Batting looks like a joy by the sea currently.
Leicestershire 128 v Northants 50-0
That's the Northants' 50 up with Luke Procter (19*) and Rob Newton (25*) going along nicely.
With Worcestershire all but certain to get the six points they need for promotion - all eyes are now on Hove for Northants fans.
If Notts manage to get 400 or more in their first innings against Sussex for maximum batting bonus points and the match is drawn, Notts will take 12 points.
That's enough for Notts to be promoted.
#bbccricket
Harry Cunningham: How can they claim poor pitch at Taunton when it's the same for both teams, and Somerset managed 236 on it?
Worcestershire 307-8 v Durham
Graham Onions picks up his third wicket, dismissing Worcestershire skipper Joe Leach caught at gully.
It still doesn't alter the course of this match.
Nine wickets for Worcestershire's bowlers inside 110 overs = promotion to Division One.
Warwickshire 166-8 v Hampshire
Fidel Edwards picks up his third wicket as Chris Wright gets the slightest of touches on the ball and edges to Tom Alsop behind the stumps.
The visitors will be hoping to wrap up this innings quickly now and get batting.
#bbccricket
Image source, Getty ImagesColin Wood: Maybe you could remember to mention Lancs v Surrey occasionally?
Apologies to fans of Lancashire, Surrey, Yorkshire and Essex, but today we're focusing on the five matches which have promotion or relegation riding on them.
But since you asked, Lancashire are 194-6, just seven behind Surrey's first-innings total with Steven Croft on 71 not out.
Don't forget there is live ball-by-ball radio commentary from all nine grounds - to tune in click on the tabs at the top of this page.
Sussex 520-8 v Nottinghamshire
Milestones galore for the Sussex batsmen today.
Jofra Archer is the latest to reach his half-century off 65 balls with six boundaries - which included two huge maximums.
Somerset 236 & 59-3 v Middlesex 142
Image source, Rex FeaturesTresco is gone. Does this match have another twist?
James Harris removes the 41-year-old opener lbw with the lead at 152.
Captain Tom Abell comes in at five.
#bbccricket
James Hobbs: Come on #bbccricket You tell us about bowling changes in Div 2 match, and tweets, but not 2 wickets for @YorkshireCCC, external
You've just done my job for me James! Thanks. Jack Brooks has removed Varun Chopra and Ravi Bopara to leave Essex 12-2. They still lead by 128.
Sussex 517-8 v Nottinghamshire
The BIlly Root experiment has worked!
Chris Jordan is caught at long on by Riki Wessels for a career-best 147. Jofra Archer remains unbeaten on 49 as Stuart Whittingham comes to crease.
Leicestershire 128 v Northamptonshire 38-0
Alex Winter
BBC Radio Northampton sport
Image source, BBC SportThey may have lost a full day to a wet outfield yesterday but Northamptonshire have wasted no time in getting right on top in this must-win fixture.
Having elected to field this morning, Rory Kleinveldt limped out of the attack after just 11 balls with a suspected side strain but it mattered not as Ben Sanderson and Richard Gleeson ran amok.
The pair reduced Leicestershire to 26 for 7 before Ben Raine's counter-attack but Sanderson and Gleeson both went on to take five-wicket hauls.
This innings is now absolutely crucial. A good haul of batting points and Northants chance of promotion will move from slim to eminently possible.
Worcestershire 300-7 v Durham
That's a big moment for Worcestershire.
Ed Barnard clips a single which takes them to 300 and three batting bonus points.
It means if they take nine Durham wickets inside 110 overs, they get three bowling bonus points and the six they need for promotion.