Stirling & Robson hit tons for Middlesex
Bopara & Browne 50s drive Essex v Warwickshire
James Anderson removes centurion George Bailey on return for Lancs
Patel passes 150 for Notts
Middlesex 238-2 v Yorkshire
Well batted Sam Robson.
The Middlesex opener has gone a little under the radar so far this season, but he's enjoying a mightily fine one.
That's his second hundred, to go along with two fifties, and he's averaging just a shade under 80 in the Championship.
Paul Stirling is just two away himself...
Image source, Getty Images
Essex 180-3 v Warwickshire
Ravi has had a pretty lean times of things with the bat so far this season, but the all-rounder brings up his second half-century of the campaign with a cover drive for three off Jonathan Trott.
The Division One leaders are beginning to set a very nice platform at Chelmsford.
Lancashire v Hampshire 202-6
That's tea in Manchester - at 4.23PM!!! (see 16:09 entry).
George Bailey is six away from a deserved century.
Middlesex 228-2 v Yorkshire - tea
Kevin Hand
BBC Radio London
Middlesex enjoyed a crucial wicketless session to move to 228-2 at tea having won the toss this morning.
Sam Robson and Paul Stirling are both unbeaten in the nineties and share a 153-run stand for the third wicket having barely offered a sniff to the bowlers.
The importance of the partnership can't be overstated given the absentees from the batting line up with overseas signing Adam Voges injured and Nick Gubbins and Dawid Malan on international duty.
The pitch was offering swing and seam movement this morning but the pace appears to have come off the ball considerably as it has aged.
Yorkshire have toiled under grueling heat and will hope the interval breaks the concentration of a pair that have already built a solid foundation for the hosts.
Lancashire v Hampshire 203-6
Image source, Rex FeaturesWhat a captain's knock this is from Australia batsman George Bailey.
The Hampshire skipper is up to 93 as the visitors bring up their first batting bonus point at Old Trafford.
Can they sneak up to 300?
Worcestershire v Kent 230-8 - tea
Matt Cole
Sports Editor, BBC Radio Kent
Kent have again relied on their tail to add respectability to their first innings score.
At 139-7 when Darren Stevens went for a characteristically combative 39, Worcestershire’s seamers seemed ready to deliver the coup de grace their excellent work deserved.
A 79-run partnership between Adam Rouse (34) and Matt Coles (47*) held them up in entertaining fashion, and got Kent to their first bonus point.
19-year-old Josh Tongue has again impressed with the ball, adding 3-47 so far to his career best six-wicket haul from the Pears’ previous game against Glamorgan.
With some variable bounce and life, this pitch is far from the New Road “road” many predicted at the start, and any score north of 275 is starting to look like a decent total.
Notts 212-3 v Leicestershire - tea
Dave Bracegirdle
BBC Radio Nottingham commentator
Samit Patel continued to make the most of his fine recent form by passing fifty for the fifth consecutive innings.
Following scores of 82, 257 not out, 66 and 122 not out, the 32-year old is on 70 not out at tea.
Patel and Brendan Taylor resumed their third wicket stand after lunch and had stretched it to 80 by the time that the visitors struck again.
Dieter Klein made the breakthrough, having Taylor caught behind to a regulation nick on 61.
Patel was given not out on 37, after the umpires had conferred with the Foxes claiming a slip catch by Paul Horton but a bump ball seemed to be their judgement.
Michael Lumb is on 26 and has put on 56 with Patel so far.
Middlesex 228-2 v Yorkshire
Well, they're off now at Lord's.
Sam Robson (97) and Paul Stirling (92) stroll to the Long Room with an unbroken stand of 153 under their belts so far.
Plenty more to come for Middlesex you expect as the county champions chase their first win of 2017.
Essex 162-3 v Warwickshire
Call me old school, but I kind of miss the days when tea was at 3.40pm.
Essex are coming out after their refreshments, Middlesex haven't even been off at Lord's.
Lancashire and Hampshire are still in the afternoon session at Old Trafford too.
All very confusing!
Middlesex 227-2 v Yorkshire
Goodness me, Dave Townsend is brave! Good job they're not at Headingley.
Meanwhile Sam Robson and Paul Stirling are both in the 90s. Nervous times?
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Division One
Division Two
Thanks Matt. It's not getting any cooler is it? The bowlers could be in for a long evening session with several batsmen going along nicely.
With games at tea, or approaching tea, let's take a quick look at the scores on the doors...
Image source, Rex FeaturesAnd with that wicket it is time for me to hand back to Gary Smee who will take you through the rest of the day
Lancashire v Hampshire 177-6
A breakthrough just before tea for Lancashire!
A beauty from Jordan Clark sees Lewis McManus' innings come to an end as he edges to Jimmy Anderson in the slips.
McManus has supported his captain well, sticking around for over an hour in support of George Bailey who has 78.
Durham v Glamorgan 147-2 - tea
Nick Webb
BBC Wales Sport
It's been more of the same from Glamorgan in the afternoon session with 81 added for the loss of Andrew Salter, caught behind off Chris Rushworth for 25.
There's been a marginal acceleration from Nick Selman and Colin Ingram with their partnership of 63 coming at 2.71 runs per over, Selman reaching 80 by tea.
Durham have toiled in vain on a sluggish pitch, with little encouragement for their six-man attack in the stifling heat.
But day one still hangs in the balance as we hope for more entertainment after tea.
Middlesex 220-2 v Yorkshire
Middlesex opener Sam Robson is one hit away from a 19th first-class hundred.
He's moved to 96...
Essex 160-3 v Warwickshire
The players at Chelmsford head off for tea with the score 160-3.
That was very much Essex's session after they had a tricky time of it this morning.
Nick Browne and Ravi Bopara head back to the dressing room on 58 and 35 respectively.
Middlesex 214-2 v Yorkshire
There's a race on for three figures at the home of cricket.
Sam Robson is the first into the 90s as he hits Adil Rashid to the rope.
The opener is now on 92, Paul Stirling at the other end on 83.
Essex 158-3 v Warwickshire
Image source, Rex FeaturesThings are slowing down at Chelmsford as we head towards tea.
How do I know?
Jonathan Trott is on for a bowl for Warwickshire.
Nick Browne and Ravi Bopara are doing a good job for Essex, they've put on 61.
Middlesex 209-2 v Yorkshire
Paul Stirling has four first-class centuries but none in the County Championship with all of those tons coming for Ireland. Could today be the day?
After giving Jack Brooks and Adam Lyth the treatment earlier, he's now doing the same to England's premier leg spinner Adil Rashid, hitting him for back-to-back fours.
He's on 82 now from 92 balls, within one hit of his highest County Championship score of 85.