Nick Gubbins and James Franklin stroll to the middle after tea for Middlesex. 

Big session for both sides coming up.

200 partnershippublished at 15:44 British Summer Time 20 September 2016

15:44 BST 20 September 2016

Somerset 233-2 v Notts

This really is outstanding batting from Somerset. James Hildreth biffs Matthew Carter to the boundary - his 10th four - to bring up the 200 partnership with his skipper Chris Rogers.

Somerset will want maximum batting bonus points here - they've got 39 more overs to get to 400.

I make that another 167 runs. 

Glamorgan have already surpassed Leicestershire's total of 96 at the Fischer Country Ground with seven wickets still remaining. They're 119-3.

Gloucestershire are sticking in against Sussex, holding steady with 143-7 - having been 97-7. They've got opener Chris Dent to thank - he's 56 not out after 229 minutes at the crease. 

Worcestershire look comfortable against Derbyshire with a score of 192-3. In case you missed it, Kent v Essex was called off in the afternoon with no play due to wet outfield.

BBC Radio Derby's Dave Fletcher at New Road:

"Daryl Mitchell and Joe Clarke shared a century stand as Worcestershire took control of their game with Derbyshire, whose chances of a first championship win of the season appear to be receding.

"Mitchell was eventually dismissed by the second division's basement side for 67, Ben Cotton trapping him leg before with one that kept low.

"But Clarke was unbeaten on 83 at tea having added a further 47 with George Rhodes (eight not out)."

Division One:

Hampshire 269-3 v Durham

Middlesex 168-5 v Yorkshire - tea

Somerset 216-2 v Notts

Warwickshire 166-6 v Lancashire

Division Two:

Gloucestershire 143-7 v Sussex - tea

Kent v Essex - no play Tuesday, wet outfield

Leicestershire 96 v Glamorgan 111-3

Worcestershire 192-3 v Derbyshire - tea

Click here for full scorecards.

Kalika Mehta
BBC Sport at Lord's

"Middlesex opener Nick Gubbins may well be dragging his side towards their first title in 13 years.

"The 22-year-old is just four runs away from a fourth Championship century of the season having absorbed the pressure the Yorkshire bowlers have been building during the afternoon session expertly.

"Many of the Lord's faithful were perplexed at Gubbins' exclusion for the upcoming Bangladesh series but with his assured drives through the off side he can't be that far off.

"And, with Somerset having picked up their first batting bonus point, Yorkshire head to tea far happier having picked up the late wicket of John Simpson."

Another topsy-turvy session comes to an end at Lord's. Like the morning session, 84 runs were scored, Yorkshire took two wickets.

Nick Gubbins is four away from a deserved century.

Clive Eakin
BBC Coventry & Warwickshire Sport

"Lancashire continue to have the edge at tea at Edgbaston, although in what looks like difficult batting conditions Warwickshire are battling to stay in the game.

"There's unpredictable bounce from the Pavilion end and that did for Rikki Clarke before tea.

"There's turn especially from the Birmingham End which had been exploited by Simon Kerrigan who has kept the batsmen tied down without getting the wicket he's deserved.

"Warwickshire haven't helped themselves by gifting the wicket of Tim Ambrose, run out for nought off a direct hit by Kyle Jarvis." 

Gary Ballance looks absolutely distraught after shelling that chance. There's so much at stake here, the tension is ridiculous - but it really was a simple catch.

He's got to refocus though because the ball is still doing all sorts.

Dropped catchpublished at 15:20 British Summer Time 20 September 2016

15:20 BST 20 September 2016

Middlesex 164-5 v Yorkshire

You've got to be catching those Gary Ballance. James Franklin edges Tim Bresnan and the ball flies at knee height to the England man at third slip but he lets it go through his fingers.

It was a 99 out of 100 catch. How costly will that be?

Image source, Getty Images

What a superb session for Somerset. 116 runs, no wickets, a Chris Rogers century and James Hildreth on his way to three figures on one foot.

Are we going to see Rogers' side crowned county champions for the first time in their history?

Scores of 103,106, 80, 10* and 158* in his last five innings have certainly helped the Zimbabwe-born all-rounder pass the mark for the first time!

It's now tea at the Ageas Bowl.

Warwickshire just can't get going at Edgbaston. Rikki Clarke is the latest batsman to get a start and then get out - the all-rounder is trapped lbw by Lancashire seamer Jordan Clark.

Warwickshire's survival in Division One is suddenly looking perilous with Hampshire 256-3 at the Ageas Bowl.

We have some spin for the first time at Lord's today.

Azeem Rafiq comes into the attack for Yorkshire and is greeted with a square cut for four by John Simpson.

Simpson has enjoyed a fine season with the bat so far for Middlesex - 744 runs and seven half-centuries. The hosts will want more off the same from the gutsy wicketkeeper today.

100 for Chris Rogerspublished at 14:57 British Summer Time 20 September 2016

14:57 BST 20 September 2016

Somerset 209-2 v Notts

Talk about perfect timing to bring up your 75th first-class century. With the biggest prize in county cricket at stake, Somerset skipper Chris Rogers goes to three figures off 152 balls.

It's a stupendous knock from the 39-year-old Australian and one which has put his side in complete control against already-relegated Nottinghamshire.

BBC Sport's Stephan Shemilt has more from Canterbury:

"Unbelievably, there will be no play at Canterbury today. As the umpires inspected for what turned out to be the final time, a muted slow hand clap came from the stands - a very polite, middle-class protest.

"After the skippers were consulted, Essex's Ryan ten Doeschate turned to make a cut-throat gesture to his players - the universal symbol for cricket being abandoned.

"Apparently, the surface is not playable, but it is dry enough for spectators to be allowed to walk on it."

There won't be any play at Canterbury between Kent and Essex today. Even though the weather is fine, the playing area was deemed too saturated for any action. 

Meanwhile, Worcestershire are coasting against Derbyshire on 154-3 - Joe Clarke unbeaten on 54. 

Glamorgan are already halfway to Leicestershire's score of 96 with only one wicket lost. 

Gloucestershire are struggling on 100-7 against Sussex, but Chris Dent is sticking in stubbornly on 39 off 127 balls.

Yorkshire's seam attack are starting to look frustrated. Nick Gubbins gets a thick edge off Tim Bresnan down to the third-man boundary and it's head in hands time again.

The sky hasn't changed all day - thick grey cloud. It's the sort of afternoon you want to be bowling out teams for under 250.

Nick Gubbins nudges his average for the season past 60 - but it's a streaky way to do it.

The 22-year-old pushes at Tim Bresnan and the ball skews off the end of his bat and down to the third-man boundary.

I'm not quite sure who's on top anymore - I guess the old saying goes 'wait until both sides have batted'.