It's been a tough day for batting at a number of grounds with five teams bowled out inside the opening day - four of them in Division One, including leaders Nottinghamshire.
They only mustered 228 all out but a couple of Yorkshire wickets before the close will have made them feel a lot better - second-placed Surrey, meanwhile, ran through Essex for 217.
Batters fared better in Division Two with Derbyshire's Caleb Jewell, Saif Zaib of Northamptonshire and Glamorgan pair Sam Northeast and Kiran Carlson hitting centuries.
us again tomorrow from 10:30 for full coverage of the second day's play.
Close of play at New Roadpublished at 18:51 British Summer Time 23 May
18:51 BST 23 May
Worcestershire 52-0 v Warwickshire 227
When Warwickshire were 161-2 with Tom Latham and Sam Hain well set, Worcestershire could only have dreamed of ending the day in the position they find themselves in.
But they showed typical character as Latham (59), Beau Webster (2) and Ed Barnard (0) all went in swift order.
With Hain lookin imperious, the Bears would still have hoped for a total well beyond 250 but when Matthew Waite got him for 86 only a counter-punching Zen Malik (34) threatened to maintain the momentum.
But Tom Taylor (4-37) snuffed out any chance of further irritation for the home side, whose openers - Jake Libby (39) and Gareth Roderick - superbly resisted 16 overs to see the Pears to stumps without loss.
Close of play at Headingleypublished at 18:49 British Summer Time 23 May
18:49 BST 23 May
Yorks 10-2 v Notts 228
Image source, Rex Features
Image caption,
George Hill took five wickets against Notts
The end of an enthralling day's cricket in Leeds and it is the Notts dressing room which will be the happier of the two.
Adam Lyth and Finlay Bean both failed to make it to the end of a day on which 12 wickets fell but one during which it could have been more.
Yorkshire bowled really well, particularly in the first session, with little reward, and then well again in the second when the wickets finally started to come.
George Hill with 5-40 and Jordan Thompson with 3-77 took the bulk but they were both frustrated too long by a stubborn display from Joe Clarke who top scored with 64.
It will be a lasting frustration as they look back on the Notts first innings that a 10th wicket partnership between Dillon Pennington and Mo Abbas yielded 20 runs.
That said 228 is not a huge score and, with a pitch which always looked likely to deliver the bulk of its wickets up front, Yorkshire may have had the best of it.
James Wharton and nightwatchman Jack White resume in the morning.
Close of play at The Ovalpublished at 18:48 British Summer Time 23 May
18:48 BST 23 May
Surrey 94-3 v Essex 217
The day began with the announcement of an eye-catching Surrey line-up featuring six seam bowlers and not a single spinner.
They put Essex in and following a 50-run opening stand between Dean Elgar and Paul Walter, bowled them out in 62,2 overs, with each of the six taking at least one wicket.
The visitors' total would have been a lot worse but for Michael Pepper's impressive 75 and they will feel a little better following a couple of wickets late in the day, including Kurtis Patterson for 51.
Essex do have a spinner in their side - Simon Harmer - but Sam Curran survives his final over with a single to his name, and partner Dom Sibley on 24.
Close of play at Wantage Roadpublished at 18:42 British Summer Time 23 May
18:42 BST 23 May
Northamptonshire 327-6 v Gloucestershire
Take a bow Saif Zaib.
Together with James Sales, he has super-charged the Northants innings taking it from a precarious 71-4 at lunch to the giddy heights of beyond 300.
It's Zaib's first hundred against Gloucestershire and has been a classy watch. It's spanned 202 balls so far and featured 16 fours.
Sales, who made 81, helped add 144 to repair their crumbling first innings as Gloucestershire went from enjoying their morning to running out of ideas.
Now if the nightwatchman role works properly then Tom Lawes should see the rest of this bowling tonight and Dom Sibley sit on his bat at the non-striker's end.
What makes me chuckle is when the nightwatcher is stuck at the non-striker's end.
Close of play at Southamptonpublished at 18:41 British Summer Time 23 May
18:41 BST 23 May
Hants 154 v Sussex 110-5 (trail by 44 runs)
Image source, Getty Images
Image caption,
Sussex celebrate a Hampshire wicket
Sussex take the honours on day one after a terrific bowling display has left Hampshire firmly on the back foot in this contest.
And it was a devastating spell from Harry Crocombe on his first start of the season and first in 2025 who delivered the knockout punch.
Crocombe took 4-27 in all but it was a spell of 3-1 in six balls, all bowled and all removing a stump, which ripped the guts out of Hampshire's middle.
The hosts have come back strong enough to take five wickets with John Turner taking 3-24 – John Simpson and Fynn Hudson-Prentice successfully crawling to the close.
And with Sussex now just 45 short of a first innings lead, Hants will need a burst of wickets a la Crocombe in the morning if they are to get a reaonsable foothold in the game.
Close of play at Sophia Gardenspublished at 18:37 British Summer Time 23 May
18:37 BST 23 May
Glamorgan 334-7 v Middlesex
A good fightback by Middlesex in the final session, picking up four wickets, but the day has been dominated by Glamorgan centurions Sam Northeast and Kiran Carlson.
They rescued the home side from 52-3 - when Marnus Labuschagne fell to Ryan Higgins for 23 - and both posted centuries in a stand of 228 for the fourth wicket.
Carlson eventually fell for 109 to Toby Roland-Jones (4-73) with the second new ball and Northeast was bowled by Higgins for 122.
Chris Cooke is still there on 32 not out and is Glamorgan's best hope of pushing the total on beyond 400 on day two.
Close of play at Chester le Streetpublished at 18:24 British Summer Time 23 May
18:24 BST 23 May
Durham 277 v Somerset 63-3
Two wickets late in the day have swung the opening day Durham's way.
After losing skipper Alex Lees to the first ball of the match, they recovered well to get beyond 250 on a surface not yielding the skip-load of runs seen in the last match here.
Three 50-plus partnerships got Durham to their batting point with Ollie Robinson (52) leading the way with the game's only half-century so far.
James Minto's entertaining last-wicket stand of 50 with Codi Yusuf was fun and a wicket apiece from them - plus Mitch Killeen's maiden scalp - has Durham's noses in front.