Image source, PA Media

And that brings the action right here to a close as well after that opening day.

Don't forget - you can read full close of play reports on all of the fixtures on the BBC Sport website and app right here.

We'll of course be back for live text and radio coverage of the second day's play on Friday from around 10:45 BST.

Until then - thanks for being with us at the start of a new season. It's great to be back!

Image source, Rex Features

Group 1

Essex 207-3 v Worcestershire

Nottinghamshire v Durham 241-7

Warwickshire 13-1 v Derbyshire 189

Group 2

Gloucestershire v Surrey 220-9

Leicestershire v Hampshire 431-4

Middlesex 293-8 v Somerset

Group 3

Northamptonshire v Kent 309-7

Lancashire v Sussex 291-9

Yorkshire v Glamorgan 310-8

And that's all the action done and dusted for this first day, stay right there and we'll show you how all the matches stand....

And a fantastic day's entertainment comes to an end at Headingley.

A superb fightback from Glamorgan sees them close on 310-8 having been reduced to 132-7 midway through the afternoon session.

Timm van der Gugten is unbeaten on 80 while Michael Hogan will resume on 40 tomorrow.

Ben Coad took 3-79 to be the pick of Yorkshire's bowlers.

Somerset's session.

Lewis Gregory got the big wicket of Sam Robson for 165 as Somerset claimed four wickets after tea.

Middlesex are still in a decent position, but the game is just about in the balance.

A day of utter dominance by Hampshire's batsmen is brought to a close.

James Vince goes to stumps on 168 off 167 balls.

Tom Alsop also made a century earlier.

Still two overs to bowl at Headingley at the end of this fascinating first day.

This situation seemed unthinkable when Glamorgan were reduced to 132-7. They're now 308-8 as Michael Hogan (39 not out) and Timm van der Gugten (79 not out) continue to flay the bowling to all parts.

Two more games done for the day.

In Group 1, they didn't get back on again after that bad light delay at Edgbaston where Warwickshire closed on 13-1 in reply to Derbyshire 189.

At Northampton, Kent reached 309-7 at stumps in that Group 3 encounter.

Evergreen Darren Stevens will resume on 34 on Friday after half-centuries from Ollie Robinson (84), Jack Leaning (79) and Jordan Cox (62) earlier on.

Kevin Hand
BBC Radio London at Lord's

Lewis Gregory has led the fightback for Somerset with the second new ball - including finally removing Sam Robson.

Having been dropped at first and second slip before reaching fifty, Robson eventually as he tried to guide the ball to third man but only picked out third slip.

Middlesex now face a scramble to the third batting point - which would be a blow to miss out on given one man made 165. With the floodlights on for the most part since the evening session began its added an extra bit of zip to processings.

Runs, runs and more runs from the Glamorgan lower order as we move towards the close of the day at Headingley.

Michael Hogan has picked up where Dan Douthwaite left off earlier and already has a run-a-ball 26 while Timm van der Gugten shows no signs of easing up on 77 not out.

It's now his first-class career best knock.

All 96 overs of the day's allocation bowled at Trent Bridge where Durham close on 241-7.

Brydon Carse (21 not out) and Ben Raine (20 not out) have added 45 for the eighth wicket so far to hold up the charge of the Notts bowlers.

Earlier in the day there were half-centuries for both Alex Lees (58) and David Bedingham (57) while Jack Burnham also made 42.

And they're also off in Birmingham.

Might not be completely done for the day as both sets of players have decided to take some seats just the other side of the boundary rope and the two umpires have stayed out there in the middle for now.

And after just seven more balls, they're off again at Chelmsford.

That looks pretty decisive as well from umpires Millns and Mallender. It doesn't look like it's improved anywhere near enough to get out there again.

Flat Track Bully: Cox, Leaning & Robinson all could've had three figures for Kent today.

Ollie Robinson has just been dismissed for 84 by Northants to go with Cox's 62 and Leaning's 79. Kent are 296-6.

Meanwhile back at Edgbaston, Warwickshire made a far from ideal start to their reply against Derbyshire.

Skipper Will Rhodes fell from the second ball of the innings without scoring leg before to Sam Conners.

They're now 13-1 with England opener Dom Sibley on three and Rob Yates on 10.

At Trent Bridge, Durham are hanging in there at 228-7. Brydon Carse and Ben Raine hanging around having added 32 for the eigth wicket so far.

And in news I wasn't expecting to report - they're coming back out again at Chelmsford.

Five overs lost from that bad light interruption as Tom Westley (84 not out) and Paul Walter (26 not out) resume for the hosts.

Maximum batting bonus points for Hampshire as they go past 400.

Liam Dawson has joined James Vince in the boundary-fest, moving to 29 off 26 balls with six fours.

Vince has 165 at better than a run a ball.