Notts beat Surrey by three wickets
Essex beat Gloucs by 10 wickets
Northants v Sussex & Worcs v Kent abandoned
Draws at Durham v Somerset, Hants v Warwickshire
Warwickshire captain Ian Bell hits 174
Essex 385 & 75-0 v Gloucestershire 262 & 215
Essex are cruising home as opener Nick Browne brings up his half-century off 65 balls.
Alastair Cook has moved serenely to 20. Just 18 needed for victory.
Who should replace James Taylor in England's middle order?
Nottinghamshire 446 v Surrey 225 & 333-5
It seemed almost impossible when they were asked to follow-on 221 runs behind, but Surrey are building a decent lead at Trent Bridge.
Arun Harinath has moved to 129 not out, and teenager Sam Curran is providing some decent support on 21.
The lead is up to 112, with all three results still possible.
Hampshire 202 v Warwickshire 304-7
It's fallen at the Ageas Bowl where Warwickshire all-rounder Rikki Clarke edges Ryan McLaren behind.
Ian Bell, who hit three boundaries in Fidel Edwards' previous over, is still going strong on 144 not out.
Warwickshire lead by 102 - is it too late to force a result?
Durham 256 & 223-4 v Somerset 179 (match drawn)
Ah, the chances of play aren't good...the umpires have called it off at Chester-le-Street and the match is drawn.
Durham 256 & 223-4 v Somerset 179
Chances of play at Chester-le-Street don't appear too good at the moment...
Tweet us at #bbccricket
On Tuesday, the cricket world was rocked by the news England and Nottinghamshire batsman James Taylor had been forced to retire because of a serious heart condition.
The middle-order batsman had been an integral part of England's side during the winter tour of South Africa, so his retirement leaves a hole in the team.
So our question today is, who do you think should replace Taylor in the England Test set up?
Get in touch using #bbccricket on Twitter.
Image source, Getty ImagesDurham 256 & 223-4 v Somerset 179
Fingers crossed for some positive news from Durham...
Every ball covered
The BBC has ball-by-ball commentary on every County Championship game this season.
To select your team, click on the live coverage tab at the top of this page.
Essex 385 & 37-0 v Gloucestershire 262 & 215
We could have our first positive result of the 2016 County Championship season in the next hour or so at Chelmsford.
Essex need just 56 more runs to beat Gloucestershire with all 10 wickets in hand.
England Test captain Alastair Cook is seven not out.
Image source, Rex FeaturesHampshire 202 v Warwickshire 283-6
BBC Coventry & Warwickshire's Clive Eakin at the Ageas Bowl:
"Sun shining at Southampton as Warwickshire chase victory on the final day of their Specsavers county championship match against Hampshire."
Image source, Clive EakinHere's how things are looking heading into the final day.
Division One:
Nottinghamshire 446 v Surrey 225 & 297-5
Hampshire 202 v Warwickshire 283-6
Durham 256 & 223-4 v Somerset 179 (inspection at 11:00 BST)
Division Two:
Worcestershire v Kent (inspection at 12:00 BST)
Northants 481-7 v Sussex (no play Wednesday, wet outfield)
Essex 385 & 34-0 v Gloucestershire 262 & 215
The umpires are just about to head out at Chester-le-Street, where we've had some heavy overnight and morning rain.
But the games at Trent Bridge, Chelmsford and the Ageas Bowl are getting away on time.
There will also be an inspection at 12:00 BST at New Road, where we're yet to see a ball bowled between Worcestershire and Kent.
Again, it's a glorious morning, but it's been a pretty soggy scene in the West Midlands since Sunday.
...the damp conditions have taken their toll at Northampton, where the umpires have decided to abandon the match.
It leaves Ben Duckett stranded on 282 not out.
County Championship - day four
It's certainly been a typical start to the County Championship season, weather wise.
We've had all four seasons, frosts and washouts, but today the sun is out and spring is in the air.
However, it's not completely good news I'm afraid to say...
County Championship Division One (11:00 BST)
Durham v Somerset (BBC Newcastle, BBC Somerset and BBC Radio Bristol)
Hampshire v Warwickshire (BBC Radio Solent, BBC Coventry & Warwickshire and BBC WM 95.6)
Nottinghamshire v Surrey (BBC Radio Nottingham, BBC Surrey and 5 Live Sports extra)
County Championship Division Two (11:00 BST)
Essex v Gloucestershire (BBC Essex, BBC Radio Gloucestershire and BBC Radio Bristol)
Northamptonshire v Sussex (BBC Radio Northampton and BBC Sussex)
Worcestershire v Kent (BBC Hereford & Worcester and BBC Radio Kent)
Start times of commentaries and matches are subject to change at short notice