Burns (90) & Elgar (75) help Surrey to 256-4 at Essex
22 wickets fall on day one at Taunton
Somerset bowl out Lancashire for 99; Leach takes 5-28
Somerset recover from 97-8 to 192 all out; Gregory 64*
Lancs close on 7-2 in second innings - trail by 86
Slater century takes Notts to 331-7 against Yorkshire
Barnard takes 6-50 as Worcs bowl out Hants for 191
Pears close on 68-4
Worcs 0-0 v Hampshire 191
Daryl Mitchell and Tom Fell open the batting for Worcestershire.
This is probably their biggest innings of the season so far - if they get a handy lead it gives them a great chance of victory and pulling clear of the relegation zone.
Dale Steyn has the ball in hand.
Kent 137 v Northants 30-5
It's worth having a closer look at events in Kent, where the game has followed a similar path to Taunton.
Kent were bowled out cheaply, but Matt Henry has ripped through Northants' top order with four wickets.
The big New Zealand paceman has 4-13 and 54 wickets for the season.
Somerset 82-6 v Lancashire 99
Where do I start?
Somerset shot out Lancashire for 99 early in the afternoon session, with Jack Leach taking 5-28.
But Somerset's batsmen have struggled too and they're now six down.
11 wickets in the afternoon session, the hosts still trail by 17.
Image source, Getty ImagesWith most games at tea or about to, here's a look at the latest scores...
Division One
Division Two
Davies st Vilas b Maharaj 13 (Somerset 81-6 v Lancs 99)
16 wickets and counting...
Steven Davies is out stumped off Keshav Maharaj.
Only two batsmen have passed 20 so far - madness.
Notts 217-3 v Yorkshire
Talk about making a statement on your debut.
Ben Duckett has motored to 24 - all of them coming in boundaries.
It's now tea at Trent Bridge.
Essex v Surrey 174-1 - tea
It was another session dominated by Surrey.
Rory Burns and Dean Elgar's stand is now worth 144 and Burns is 14 away from a fourth County Championship century of the season.
Elgar has provided superb support with 64.
Is this the day that cements Surrey's grip on the title?
Image source, Getty ImagesCheers Katie.
There's really no stopping the Surrey juggernaut is there?
They've gone to tea at Chelmsford and New Road now, and Somerset and Notts won't be far behind.
So it seems like a good time to hand over to Gary Smee to take you through the final session.
Northeast c Mitchell b Parnell 48 (Worcs v Hants 191)
I'm sure Worcestershire would have taken that at the start of today...
Sam Northeast drives loosely at Wayne Parnell and is snaffled by Daryl Mitchell in the slips.
That's quite a collapse from 80-1.
Slater c †Tattersall b Waite 109 (Notts 205-3 v Yorkshire)
Ben Slater's epic innings comes to an end as he is caught behind by Jonathan Tattersall off the bowling of Matthew Waite, who takes his third wicket.
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Lockwoody Well this is Somershocking batting.......... I'll take my leave now
A pun to rival Yorkshire's Twitter feed.
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Marc Webb: It's all very well having a pitch that works for Leach, but we have to be able to bat on it too, and get more than the oppo!!!
Abell lbw b Maharaj 14 (Somerset 62-5 v Lancs 99)
This is... phenomenal, on too many levels.
Tom Abell is pinned lbw as he shifts to meet Keshav Maharaj, and I'm not sure any of us can find the words for whatever is going on with the batters down at Taunton.
I would ask for suggestions but I'd be a little bit worried about what you might come up with...
Another wicket at Taunton now...
Libby lbw b Waite 1 (Notts 188-2 v Yorkshire)
Matthew Waite takes his second wicket by pinning Jake Libby lbw for one.
Ben Duckett enters the fray for his Notts debut.
Steyn c Cox b Parnell 25 (Worcs v Hants 168-9)
Worcestershire finally break a gutsy ninth-wicket stand...
Wayne Parnell fires in a yorker to Dale Steyn and the South African nicks it behind.
But only after a handy 25. Sam Northeast is joined in the middle by Fidel Edwards.
Hildreth c Vilas b Onions 32 (Somerset 60-4 v Lancs 99)
Image source, Getty ImagesJames Hildreth's brief cameo comes to an end as he is caught behind off Graham Onions!
He struck six boundaries in his 27 balls - this game is still in the balance.
Notts 183-1 v Yorkshire
Yorkshire's bowling game has not been strong, but at least their pun game is.
Brathwaite lbw b Waite 71 (Notts 182-1 v Yorkshire)
Kraigg Brathwaite's impressive innings comes to an end!
He is trapped lbw by Matthew Waite to a ball that jagged back in.
His batting partner Ben Slater is still going strong at the crease on 103 from 170.