127 wickets fall across nine matches in both divisions
Champions Essex fight back with ball against Lancashire after making just 150
Australia's Matt Renshaw scores 100 on debut for Somerset v Worcestershire
South Africa opener Aiden Markram makes a pair on the same day on his Durham debut
Yorkshire 256 v Nottinghamshire 0-1 (0.2 overs)
Great start for Yorkshire with the ball and Jack Brooks.
Steven Mullaney lasts just two balls of the innings for Notts and chops the ball back on to his stumps as he tries to drive off the back foot.
Surrey 211 (73.1 overs) v Hampshire
From 187-4 to 211 all out. That's quite the collapse from Surrey, especially considering there's no spin out there for Liam Dawson, who took 4-30 from his 11.1 overs. Some poor shots and a very long tail combined.
Fidel Edwards (4-38) was the pick of the Hampshire bowlers.
Image source, Getty ImagesSurrey 211 (73.1 overs) v Hampshire
And that's that. Matt Dunn edges Liam Dawson to first slip to give the left-arm spinner his fourth wicket (in the month of April!)
Surrey's collapse is complete.
Surrey 211-9 (72.5 overs) v Hampshire
Jade Dernbach has been promoted to the dizzy heights of number nine in the Surrey batting order - the same number as his first-class batting average.
The Surrey T20 captain plays a shot befitting his format expertise, backing away to a Fidel Edwards yorker. The outcome is inevitable.
Yorkshire 256 (74.1 overs) v Nottinghamshire
Image source, Getty ImagesLuke Fletcher in the wickets once again to wrap up the Yorkshire innings.
Ben Coad the last man to fall for 18 but not before he had helped his side to a second batting bonus point.
Fletcher finishes with figures of 4-47 in that innings.
Durham 91 v Kent 138-5 (44 overs)
Adam Whitty
BBC Radio Kent
Much like Durham's first innings, wickets have fallen at regular intervals throughout this Kent batting display - although less frequently.
The latest man to depart was Darren Stevens, so often a counter-attacking batsman capable of turning innings' around, he was trapped lbw just a few balls after the tea break by James Weighell.
Image source, Rex FeaturesHeino Kuhn did not enjoy his batting as an international, but is having a better time of it with Kent
But South African Heino Kuhn has been determined at the other end, strong in defence but not afraid of throwing his arms hard at a few.
He reached his half century off 120 deliveries, and if Kent are to build a meaningful score here, the kolpak signing is key to their progress.
Somerset 202 v Worcestershire 48-5 (12.1 overs)
Eddie Byrom takes an alert catch at short leg and Craig Overton has a wicket. Worcestershire are in danger of being rolled out here. George Rhodes departs four balls after Tom Fell.
Somerset 202 v Worcestershire 47-4 (11.3 overs)
As I was saying, batting is tricky at Taunton. Tom Fell knows. He's lbw to Josh Davey.
Surrey 210-8 (71.2 overs) v Hampshire
Oh dear. Another poor shot from a Surrey batsman. Rikki Clarke saunters down the wicket and hits Liam Dawson straight to Chris Wood on the long-on boundary. Needless.
Yorkshire 248-9 (73 overs) v Nottinghamshire
Nice bit of resistance for the last wicket this for Yorkshire at Headingley.
Jack Brooks (22 not out) and Ben Coad (18 not out) have added 36 so far to frustrate the Notts bowlers who are looking to complete the job.
Somerset 202 v Worcestershire 45-3 (11 overs)
Tom Fell (19*) and Travis Head (14*) have come through the tough start provided by Lewis Gregory.
Considering only three Somerset players made it to double-figures, it seems a difficult pitch at Taunton.
Essex 150 v Lancashire 65-4 (17.5 overs)
Image source, Rex FeaturesSimon Harmer was Essex's other big wicket-taker in their march to the title last season.
He comes on to try and dry up the runs for Lancashire, has a big leg before shout turned down, gets slog-swept for four by Liam Livingstone and then next ball gets him caught at short leg by Ryan ten Doeschate.
Livingstone doesn't look too pleased with that but his enterprising knock comes to an end on 33.
Wickets keep falling up at Chester-le-Street where Kent are now 132-5 in reply to Durham's 91 all out.
Derbyshire have been dismissed for 261 against Middlesex at the County Ground.
Warwickshire's reply to Northants' 147 all out has stabilised a bit at Wantage Road on 50-3 after tea.
Sussex continue to press on in the Grace Road sunshine as they move to 193-4 against Leicestershire.
Finally, Gloucestershire are hunting down a first batting bonus point against Glamorgan at Bristol on 192-7.
Surrey 203-7 (69.4 overs) v Hampshire
Another wicket for a spinner - and it's the same one, too. Liam Dawson deceives Ben Foakes, who gets a big stride in, but is hit on the pad.
The umpire's finger goes up and another Surrey batsman fails short of a half-century. Three wickets in the session for Hampshire.
No words needed really.
Just glorious sights up and down the country today....
Image source, Getty Images
Image source, Getty Images
Image source, Getty ImagesSurrey 202-6 (67.3 overs) v Hampshire
Sam Curran tries to hit Liam Dawson over mid-off, but can only pick out Chris Wood. The youngster will regret his shot selection on that one.
A wicket for a spinner in April, now there's a rarity.
Essex 150 v Lancashire 41-3 (14 overs)
Image source, Rex FeaturesRuns starting to come slightly easier for Lancashire at Chelmsford.
Skipper Liam Livingstone and Dane Vilas are trying to get something started for this fourth wicket.
Paul Walter on at first change for the hosts just struggling for a bit of rhythm.
Derbyshire 244-8 (64 overs) v Middlesex
Dave Fletcher
BBC Radio Derby Sport at Derby
A 59-ball half century from Hardus Viljoen - which included three sixes in an over off Ollie Rayner - turned things Derbyshire's way before tea.
The home side were struggling on 167-7 when Viljoen joined Tony Palladino and they added 81 for the eighth wicket.
James Harris picked up three wickets in the session for Middlesex - including Palladino for 25 from the last ball of the session as Derbyshire reached 248 for 8.
Somerset 202 v Worcestershire 24-3 (6.1 overs)
Travis Head negotiates a back-of-a-length delivery, getting off the mark first ball. No hat-trick at Taunton.
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Yorkshire 211-9 (66.4 overs) v Nottinghamshire
Wickets tumbling all over Division One all of a sudden.
Andy Hodd's brave resistance for Yorkshire is finally ended on 62 by Harry Gurney, who takes his wicket of the innings for Notts.
Hodd's 116-ball stay guided Yorkshire to what might be a valuable batting bonus point.
Image source, Getty Images