Play began on time at Edgbaston after another reshuffle in the ranks. Graham Clark and Jack Burnham will replace Ben Stokes and Brydon Carse for Durham, although Burnham may still be somewhere en route. Meanwhile, Ethan Brookes comes into the Warwickshire side for Danny Briggs.

A leg bye is the only addition to Durham's overnight score thus far.

But the overnight rain has delayed the start at Hove.

Sussex have had a few problems with their outfield this season and more rain is not what they needed.

No play before lunch.

Underway on time at Cheltenham despite terrible overnight rain.

Josh de Caires - son of Michael Atherton opening the batting on debut for Middlesex.

Opening the bowling for Gloucestershire is Matt Taylor - it would have been David Payne alongside Dan Worrall but Payne has received an England call-up.

Payne was also Gloucestershire's stand-in captain for this game.

Dom Goodman has taken his place in the side.

The start of play has been delayed at the Ageas Bowl because of a wet outfield. We are still waiting to hear who will replace Will Jacks, for Surrey, who was one not out, and Hampshire skipper James Vince after both were called into England's one-day squad.

With Ben Duckett summoned away by England, having been 69 not out overnight, replacement Dane Schadendorf finds himself at the crease with Brett Hutton as day three begins at Trent Bridge. Fynn Hudson-Prentice opens up for Derbyshire.

Whenever and wherever there is play today, our BBC local radio teams are in place to bring you ball-by-ball commentary. Choose a game from the audio links at the top of the page to tune in. We'll keep you apprised of events elsewhere with regular text updates.

Image source, BBC Sport

As far as we can tell, the players who were involved in the current Championship games and have been named in England's new one-day squad are:

Stokes (Durham)

Carse (Durham)

Payne (Gloucestershire)

Vince (Hampshire)

Crawley (Kent)

Parkinson (Lancashire)

Simpson (Middlesex)

Duckett (Nottinghamshire)

Overton (Somerset)

Jacks (Surrey)

Briggs (Warwickshire)

We'll let you know who is replacing them in due course.

Image source, Getty Images

England spin bowler Dom Bess believes a Yorkshire lead of 200 or more will leave Northamptonshire a "tricky chase" in the fourth innings of their game at Wantage Road.

Victory for Yorkshire - who lead by 147 - would effectively guarantee them a place among the six clubs who will compete for the title - but a win for Northants would enable them to leapfrog their opponents in Group Three.

"it’s about making sure we keep chipping away at our lead and, when we get the ball back in our hands, putting them under as much pressure as we can," said Bess, who took 7-43 in the home side's first innings.

“They’ve had three T20s on it and 180 (overs) in this game already. But if you really do apply yourselves, you can score runs. Anything up around 200 will be a really tricky chase.”

Image source, Getty Images

There's a big day ahead for Middlesex batsman Josh de Caires after they bowled out Gloucestershire on day one at Cheltenham.

The 19-year-old son of former England captain Michael Atherton is set to open the batting in his maiden Championship innings.

He scored 118 for Leeds-Bradford Universities in a pre-season game against Yorkshire in March, but more recently made two half-centuries for the Middlesex second XI in T20 games.

Atherton made 53 in his first Championship innings for Lancashire against Warwickshire at Southport in 1987 - how will his son fare today?

Image source, Rex Features

Hampshire tail-ender Brad Wheal hailed Colin de Grandhomme as "world-class" after the pair shared a 10th-wicket stand of 114 against Surrey.

Wheal's 45 was his highest score, while New Zealand's de Grandhomme marked his Championship debut for the club with 174 not out.

"It was good just to be out there, Colin is a world-class player and great to bat with. He was very positive and looking to score runs all the time and put them under pressure," the Scotland seam bowler said.

"Any runs from the tail are good and as our coach keeps saying, 'a happy dog wags its tail'."

We have already told you that England are having to call up a new one-day squad because of Covid, to be captained by Ben Stokes. This will mean players having to be pulled from ongoing Championship games. Here's some news on that from Edgbaston and Old Trafford.

'Iffy' is one word that could describe today's forecast. But here's BBC Weather's Simon King with a few better ones.

Nottinghamshire 256-7 v Derbyshire 149

Notts lead by 107 with 3 wickets standing

Warwickshire 237 v Durham 20-1

Durham trail by 217 with 9 wickets standing

Gloucestershire 248 v Middlesex

Hampshire 488 v Surrey 42-4

Surrey trail by 446 with 6 wickets standing

Somerset 461-9 dec v Leicestershire 95-3

Leicestershire trail by 366 with 7 wickets standing

Lancashire 108-5 v Kent 74

Lancashire lead by 34 with 5 wickets standing

Northamptonshire 170-9 v Yorkshire 158 & 159-6

Yorkshire lead by 147 with 4 wickets standing

Sussex 226 v Glamorgan 205-9

Glamorgan trail by 21 with 1 wicket standing

With England having to name a new one-day squad for the upcoming series against Pakistan because of Covid**, we are wondering how that might affect our ongoing Championship games.

Ben Stokes will skipper the new-look squad - so he and others may be pulled from the county matches they are currently playing in.

More news on that when we have it.

For now, it's day three in seven matches - and day two at Cheltenham, so welcome to our coverage. Play is due to start at 11:00 BST.

**For full story, click here.

Image source, Rex Features