Magnificent stuff from Keaton Jennings as he takes down Notts' premier bowler.

Dillon Pennington pitches up and Jennings smashes it over his head and down to the ropes at long-on for four.

He is now 150 not out. Terrific batting in the context of this game.

Bad light brings the players off in Cheltenham. Only the 17 wickets to fall so far!

Image source, Rex Features

Poor Kashif Ali has been a spectator at the non-striker's end as carnage ensued following that brief delay for rain and bad light.

He has been on the verge of his 50 for what seems like forever, but finally gets to his sixth first-class half-century as he hoiks Ben Raine for six over deep square leg.

It comes off 76 balls, with seven fours, and in the circumstances it's a super knock.

The second hundred of the day at the Utilita Bowl and the second hundred of the day for a wicketkeeper-batter around the country.

Ben Brown tucks Matt Parkinson into the legside for a single to bring up his second century of the season, coming off 183 balls.

He and James Vince have put on 233 and have ground Kent into the dirt.

Michael Booth ducks under a Migael Pretorius bouncer and then gets a streaky four runs, edging wide of the two slip on the defensive block.

But he also gets a four with a respectable slap through point off a shorter ball.

10 runs come off the over altogether as a helicopter is seen buzzing overhead.

Worcestershire are in a bit of a hole here now.

Kashif Ali has got to hang around and the others have to use a bit of common sense and bat around him.

It is falling apart for Worcestershire.

Four runs to Ryan Patel, going back to Simon Harmer and pulling the spinner high over square leg.

He gets four more off Matt Critchley, sweeping hard to long leg.

Ooof - that was close! But no cigar.

Amar Virdi wafts wildly at Matthew Potts hat-trick ball and almost gets an edge on it through to wicketkeeper Ollie Robinson.

He misses out on the treble but is one away from the consolation of a five-for.

Six overs left before the close in West End.

Kent would gladly leave the field now if possible.

One of the beauties of playing at out grounds is the surrounds.

Keaton Jennings tests that theory as he pulls Olly Stone from outside off stump and it goes all the way for six.

Out of the ground! Spectators are seeing if they can reach the ball from the other side of the fence.

Wow, that is a good shot!

Keaton Jennings takes a Dillon Pennington delivery on the up and smashes it through the offside.

A shot of a player on 131 not out.

But then here is Notts' big chance as Jennings takes on the hook shot down to Lyndon James. He is wary of the boundary rope and can't hold on and parries it onto the floor.

The result is one run and Jennings survives.

Simon Harmer is round the wicket to Ryan Patel, who is back trying to cut square but without getting the ball through the off side field.

That ball was close to gully in fact. Tense moments.

Maiden over.

Matt Critchley is into his second over and Jordan Clark defends down the ground.

The last ball is driven to deep cover point for a single.

Michael Burgess is surging on after his century, charging forward to Josh Davey with a drive lofted through wide mid off.

He appeared to lose his shape and take his eye off that on contact but the ball still races away for four.

That takes the Bears to 350 and a third bonus point in the 92nd over.

Ethan Brookes looked stunned to be given out - a bit like Ben Stokes earlier in the day.

Ben Raine getting a wicket in his first over back.

This match is going at a right rate of knots.

There's still time for Worcestershire to be all out tonight and Durham batting again.