Lancashire have already lost a wicket as they chase an improbable 473 to beat Glamorgan. James Harris had Phil Salt caught at slip for a single and the hosts are now 14-1 at Old Trafford.

The umpires plan to inspect things at Canterbury in about five minutes time - they've only had a few overs there today with plenty of heavy showers rolling through.

Northants have just lost an eighth wicket against Derbyshire but they're superbly placed on 517-8 with a lead of 140.

Dave Bracegirdle
BBC Radio Nottingham commentator

A magnificent shot to reach the landmark.

A glorious moment for the Notts skipper, he won't be done yet.

for Haseeb Hameedpublished at 16:14 British Summer Time 31 July

16:14 BST 31 July

Notts 399-4 v Somerset 438

Image source, Rex Features

A single off Jake Ball takes Haseeb Hameed to 199 and he keeps the strike.

He then advances at Archie Vaughan and whacks him past deep cover for four!

He goes to a third double-century of his career, and second this season.

380 balls, 23 fours and two sixes.

Notts trail by just 39 now.

As Mark Church says, Surrey have the target down into double figures now.

Rory Burns anchoring the chase on 14 from 47 balls, allowing first Dom Sibley and now Ryan Patel to chivvy things along.

Patel adds a fourth boundary with a short-arm pull off Matty Potts over midwicket.

They are back on at Worcester with Joe Weatherley getting the Hants second innings under way by clipping Shahzad Khurram for a boundary in the first over.

Mark Church
BBC Radio London commentator

I think that if Surrey get within 50 then they will try and finish it tonight.

It does look like there could be rain at some point and that could curtail their efforts.

Their target is below 100.

Image source, Rex Features

Sussex are in a spot of bother as they contemplate the final session after a chaotic opening to their second innings.

It is hard not to feel that they folded under pressure with a needless run out and a first ball exit.

Even Tom Haines' dismissal appeared to come from a scrambled mind after a near run out at the end of the previous over.

For Yorks, tea will taste very nice indeed with Sussex trailing by 294 with just seven wickets remaining.

The prospect of an innings defeat is realistic.

Adrian Harms
BBC Sussex

A calamitous start for Sussex in their attempt to avoid their second innings defeat in a row.

Tom Haines' indifferent run of form continued when he was caught and bowled, Tom Alsop was brilliantly run out by a direct hit from Iman Ul Haq at cover, after Daniel Hughes had called him for a suicidal single.

But worse was to follow as James Coles flashed at the next delivery to be caught at slip.

With another four sessions to bat Sussex need a minor miracle to escape with a draw, whilst a win for Yorkshire would move them to within one point of Sussex in the table.

Ed Barnard blocks the last four deliveries of Matt Critchley's over as the match reaches its second break of the day.

Warwickshire have put on 111-3 since lunch but it will be Essex who exit the pitch in better spirits with the visitors still trailing by 289 with five wickets remaining.

Martin Emmerson
BBC Radio Newcastle

It's been a long time since Durham last won a Championship game. That was here in May against Notts.

Today they are heading for their fifth defeat of the season - and third at home - as Surrey look set to join Warwickshire and Somerset - the previous winners here.

Judging by the way things are going in Scarborough - and the bonus points picked up in that game - Durham look set to swap second bottom spot with Yorkshire.

Unless there is a sudden rattle of wickets, or a load of rain here, Surrey should wrap this up inside three days. They need another 112 and have 31 overs in which to get them.

Durham haven't just suddenly found themselves in relegation trouble. It's been a long road to this point. Their final three games in September are away to Essex, at home to Worcestershire and away to Yorkshire. There will be a huge amount riding on those results!

100 for Libbypublished at 15:49 British Summer Time 31 July

15:49 BST 31 July

Worcs 249-9 v Hants 293

Jake Libby goes aerial but manages to clear fielders and take the two runs to get him to three figures.

A good effort as the innings has crumbled around him.

Excellent day for Notts so far, led by their captain Haseeb Hameed.

He takes tea 194 not out, the fourth highest score of his career.

Lyndon James with him on 19.

Joe Clarke, for 42 in the morning session, and Jack Haynes, for 70, the only men out today.

Perfect start for Surrey, just losing Dom Sibley and racing to 64-1 in 16 overs.

One more steady stand will break the back of this chase.

Surrey should be able to win tonight with 112 to get in two hours.

The milestones keep on coming for Northants.

Justin Broad reaches his 150 and batting partner Rob Keogh goes to his century.

Their seventh-wicket stand is worth 184, but more importantly Northants' lead is 88.

That didn't look likely when they were 154-5 yesterday.