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Kookaburra balls being used in this round of games plus first round in July
D1: Lancashire, put in by leaders Surrey, rally from 119-5 to be bowled out for 274
Teams who won the toss batting first in all the other games
D1: Essex duo Dan Lawrence and Tom Westley hit tons at home to Warwickshire
D1: Nick Gubbins & Liam Dawson going well for Hampshire against Middx
D1: Rob Keogh out for 97 for Northants against Kent in battle of bottom two
D1: Somerset bowled out for 163 at home to Nottinghamshire
D2: Alex Lees hits a ton as leaders Durham pile up a big score at Leicester
D2: Second-placed Sussex bowl out Glamorgan for 242
D2: Fin Bean makes a century for Yorkshire at home to Gloucestershire
D2: Pears opener Jake Libby still there but Pears four down at home to Derbyshire
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Yorkshire 194-3 v Gloucestershire
A sixth first-class fifty for George Hill.
The 22-year-old brings up the landmark off a well-paced 82 balls with seven fours and a lovely maximum off Zafar Gohar.
He has shared in a 104-run fourth-wicket stand with Fin Bean - a partnership with a combined age of just 43.
Somerset 129-8 v Nottinghamshire
Somerset are collapsing in a heap here as Matt Carter takes a third wicket.
Josh Davey misses an arm ball from Carter which strikes hits him low on his pads right in front and his 12-ball stay is over. No doubt whatsoever about that one.
It's a fourth wicket after lunch and Nottinghamshire look likely to be batting before tea.
Yorkshire 175-3 v Gloucestershire
Yorkshire are working themselves into a strong position at Headingley.
Fin Bean has eased to 85 and George Hill is 13 shy of a half-century.
The fourth-wicket partnership has moved to 85 and they look set fair.
Lancashire 119-5 v Surrey
Surrey strike for the second time in seven balls and, without any further addition, Daryl Mitchell follows Dane Vilas back to the pavilion.
Tom Lawes, who has a nice habit of getting the bigger-name internationals out, has another scalp to his name.
Two new batsmen to get at now as George Balderson comes in to join Phil Salt.
Hampshire 100-4 v Middlesex
It's taken them a while to get there but Hampshire have reached 100.
Middlesex's bowlers have done a good job of restricting the runs so far and the hosts need Nick Gubbins and Liam Dawson to put together a decent partnership now.
Leicestershire v Durham 164-2
After their pummelling in the first 90 minutes of the day, Leicestershire have dug in.
They've slowed the rate a tad and taken a second wicket as Scott Borthwick (8) edges George Scriven behind to Peter Handscomb.
Durham have slipped from 145-0 to 164-2 to give the hosts some heart.
Northamptonshire 132-4 v Kent
Image source, Getty ImagesAn 18th first-class half-century is on the board for Rob Keogh.
It came up in 72 balls, with seven fours.
He's at the crease with Saif Zaib, who has just moved on to 15.
Worcestershire 120-3 Derbyshire
Pears opener Jake Libby reaches a half-century from 106 deliveries, including seven fours.
Shortly after lunch there was disappointment for Worcestershire debutant Rehaan Edavalath.
The teenager, on his first-class debut, lasted only three balls before falling lbw to Anuj Dal.
Lancashire 119-4 v Surrey
Sean Abbott strikes for a third time as he ends the 73-run stand between Dane Vilas and Daryl Mitchell.
But it is not a shot that Vilas will want to see again.
Just as he was looking like he was getting into his stride, the former Lancs skipper hung his bat out to dry at the grateful Abbott and Tom Latham took a comfortable slip catch.
Wicketkeeper Phil Salt is the new man in. Not the worst number six in county cricket. Daryl Mitchell is on 27.
Somerset 124-7 v Nottinghamshire
You won't see many catches like that this season.
Craig Overton nibbles at a Dane Patterson ball outside off stump which takes his edge.
It flies low to a diving Matt Carter at second slip who somehow palms it up before it hits the ground to give his first slip colleague Joe Clarke a simple catch.
Notts will say you earn your luck and they have been superb so far today.
Hampshire 94-4 v Middlesex
Josh de Caires is straight into the action early in the afternoon session to pick-up his second wicket.
Ben Brown tries to work it away off his pads but ends up sending the ball straight into the hands of Sam Robson at short leg.
He had to be alert at that distance but it's probably one of the easier catches you can take in that position.
The disappointment for Brown is clear to see and Hampshire are four down before reaching 100 runs.
Essex 139-2 v Warwickshire
Essex duo Tom Westley and Dan Lawrence still going well at Chelmsford.
Both now have half-centuries - and their partnership is well past three figures.
It seems a long way back now to losing Feroze Khushi and Alastair Cook inside the first five overs.
Lawrence has been given special dispensation to play, as he will join up with his England colleagues possibly tonight.Timely knock this.
Lancashire 107-3 (28 overs) Surrey
Nice start to the afternoon session as, having completed their 50 stand with the last ball before lunch, Dane Vilas and Daryl Mitchell then steer the visitors past the 100 mark on the restart.
Somerset 110-6 v Nottinghamshire
It's going from bad to worse for Somerset as they lose a second wicket in 13 balls after lunch.
Top-scorer Tom Kohler-Cadmore had escaped a tight lbw call to Dane Patterson the first ball after lunch, but not this time.
He misses a straight ball which would have gone on to hit his leg stump.
Craig Overton joins Kasey Aldridge at the wicket.
Somerset 110-5 v Nottinghamshire
A dramatic start at Taunton.
Dane Patterson steams in with the first ball after lunch and raps the pads of Tom Kohler-Cadmore sparking a loud appeals from bowlers and slips.
It looked very close, but is ruled not out.
But Matt Carter strikes with his first ball after lunch.
Pitching a slow spinner on a length, James Rew prods forward and edges the ball onto his pads. It loops up to Matt Montgomery who takes a smart catch.
Nine games. 26 wickets taken.
Does that seem slightly more than usual?
One to chew over for the stattos while we three parched reporters go in search of cold drinks and ice creams.
Suggest you all do the same
Division One
Chelmsford: Essex 119-2 (30 overs) v Warwickshire
Southampton: Hampshire 92-3 (30 overs) v Middlesex
Wantage Road: Northamptonshire 104-4 (29.3 overs) v Kent
Taunton: Somerset 106-4 (30 overs) v Nottinghamshire
The Oval: Lancashire 98-3 (28 overs) v Surrey
Division Two
Cardiff: Glamorgan 85-4 (27 overs) v Sussex
Leicester: Durham 150-1 (29.overs) v Leicestershire
New Road: Worcestershire 105-2 (29.4 overs) v Derbyshire
Leeds: Yorkshire 139-3 (29 overs) v Gloucestershire
Worcestershire 105-2 Derbyshire
Derbyshire's Anuj Dal removed Azhar Ali with the last ball before lunch to give his side their second wicket.
Gareth Roderick hit 40 before falling to Ben Aitchison but Jake Libby will resume on 45 not out in the afternoon session.
Glamorgan 85-4 v Sussex
Clearly a Sussex morning at Sophia Gardens.
Four wickets. Two to New Zealander Henry Shipley, one to Aussie Nathan McAndrew and one to South African Ari Karvelas.
Essex 119-2 v Warwickshire
Two early wickets for the Bears - one each for Chris Rushworth and Hasan Ali.
England spinner Dom Bess - a surprise loan signing for Warwickshire - has sent down 16 overs for 63 on his Bears debut having beenn included along with the 11th hour addition of Jake Lintott .
Both may get plenty of overs this afternoon but the morning session has belonged to Essex.
Skipper Tom Westley (64) and Dan Lawrence (40) have so far added 99 for the third wicket.
99? Yes please. Especially on a day like this.
With jam!