Chris Benjamin drives at a wide one from Zain ul-Hassan. It goes aerial via the outside edge but clears the slip cordon and heads for the rope at third man. Not a shot with a lot of conviction, that one.

Ethan Bamber is certain he has Dom Sibley leg-before - but the umpire doesn't agree.

There was a little movement from leg to off there and we think it was just missing. Good ball, though.

Another huge appeal two balls later. That looks more adjacent, but again the umpire shakes the panama.

Rory Burns tries to pull a ball from Che Simmons.

An under-edge doesn't carry to keeper Alex Davies, but he can't gather it and it rolls away for four - and he ends up flat on his back.

Hard to imagine Ben Foakes ending up in that position.

How is the breakthrough going to be achieved by Warwickshire?

Not that way as Dom Sibley off-drives the first ball of a new Ethan Bamber which brings him a boundary.

There are 19 overs of play remaining.

50 for Adam Lythpublished at 17:04 British Summer Time

17:04 BST

Essex 123 v Yorks 216 & 64-0

Image source, Rex Features

Adam Lyth strokes Kasun Rajitha through the covers and, although the ball doesn't carry enough pace to reach the rope, the three runs gained are sufficient to take the Yorkshire opener to his second half-century of the match from 106 balls.

Lyth has been beyond 50 in every County Championship match so far this season, but this is the first time he's done it twice.

Dave Bracegirdle
BBC Radio Nottingham commentator

Kyle Verreynne leaves it alone and it nips back and demolishes his off stump.

Verreynne uncharacteristically elected not to play and has been cleaned up for nine.

It's an extraordinary day of cricket with still 28 or so over to go.

A lot of Kent's runs so far have been to the third man area and there's another one for Jack Leaning off Asitha Fernando which brings up a 50 partnership with Chris Benjamin from 108 balls.

Leaning is 25 not out and his partner has 29.

Close call for Rob Keogh, who is struck on the pad by a ball from George Balderson that nipped back.

A few hearts in mouths but the umpire's hand remains by his side and Keogh survives. For now, at least.

This is attritional stuff for Northamptonshire, with Keogh and Saif Zaib - who has avoided a pair - battling to withstand the pressure and stretch their side's slender advantage.

Anxious moment for Rory Burns, who cuts a ball from Che Simmons in the air but the diving fielder at point can't quite reach it.

The Surrey skipper is 17 not out and Dom Sibley has six.

50 partnership for Lyth and Beanpublished at 16:47 British Summer Time

16:47 BST

Essex 123 v Yorks 216 & 53-0

Image source, Rex Features

For the second time in this match, Adam Lyth and Fin Bean have put together a 50 partnership at the top of the order.

Lyth takes the stand to 53, crunching Kasun Rajitha to the cover fence as Yorkshire stretch their advantage to 146.

Encouragement for Warwickshire as Ethan Bamber finds the edge of Dom Sibley's bat but it falls just short of first slip.

Sibley is then beaten by another good one and rapped on the thumb by a delivery slightly shorter in length.

The Surrey opener is denied four runs to end the over as a diving Sam Hain save just inside the boundary keeps him to two.

A boundary for Chris Benjamin, who dabs a ball from Zain ul-Hassan past the slip cordon and down to third man. He moves on to 16.

The pitch is proving no more helpful for Warwickshire's attack thus far than it did for Surrey's. Rory Burns clips Oliver Hannon-Dalby away for four and moves into double figures.

Santokie Nagulendran
BBC Radio Essex

It's going to be important for Yorkshire to continue this. Essex are going with pace to try and break up this partnership.

Yorkshire are well in control here. Both sides are desperately seeking a win after what can only be said to be indifferent starts to the season for both of them.

It's definitely advantage Yorkshire here at the moment, it's been their day so far.