Ben Cox is down the track to Felix Organ.

The ball pops off a length, landing just in front of short mid-wicket.

A full ball is driven down long off for four! 100 to win now.

64 for the current partnership.

Nick Kelly cuts Manny Lumsden to deep cover point for a single.

Ben Cox cuts in front of square - and we have another hard-run two.

A Lumsden inswinger is flicked away leg side. Two again, piling pressure on the fielders.

Lumsden bowls a leg side short ball that Ben Cox leaves.

Cox is tucked up by the next ball but squeezes it away in front of square leg for one.

Now then! Kelly is across the stumps trying to glance to leg on 41...

An inside edge bounces just a little in front of Hampshire keeper-captain Ben Brown.

George Thomas clips away through mid-wicket from Olly Stone and it races away for four.

Thomas then unleashes a big cover drive for another four from the last ball of the over.

That's 10 runs from the over for Sussex and they're now 52 runs away from victory.

Very good, Derek. Too soon?

Felix Organ floats one up just outside off to Nick Kelly - who drives off side for two.

Organ gets one to drift into the pads and Kelly blocks.

Kelly goes back to the sixth ball of the over and drives for one into the off side.

Worth mentioning that Ben Coad ended with 4-33 in that Somerset second innings.

Ben Cliff also took 3-29 to end with 11 wickets in the match and overall figures of 11-105 from 31.4 overs.

A lone slip in place for Manny Lumsden.

Ben Cox is beaten going back outside off stump.

Single now to the leg side.

Nick Kelly pulls a short one outside off and the ball is dragged just wide of Kyle Abbott at mid on for one.

A wide ball is cut behind square by Ben Cox for two.

He pushes his next ball through mid on and sprints a two, much to the applause of home supporters.

A clear change of tempo for Leicestershire ahead of the 80-over mark when the second new ball is due.

71 overs bowled so far.

Martin Emmerson
BBC Radio Newcastle

Matty Potts and Callum Parkinson added some real niggle value at the end of the Durham innings. Their stand was worth 48 and it means Worcestershire are chasing a demanding 253 on a track which has been doing all kinds today.

The variable bounce could be a real issue, particularly if the bowlers can hit a certain spot from the Finchale End.

Durham were all out for 235 when Potts was bowled By Fateh Singh with his first delivery of the day. Parkinson made 16*.

Nick Kelly leaves Felix Organ outside off - as the spinner gets one to bounce and turn away a little.

A shorter, wider ball is cut away by Nick Kelly for two.

Kelly squeezes a ball to gully off a thick outside edge.

He'll get a single pushing off a thick edge into the leg side.

Ben Cox is down the track pushing to wide mid off for one.

Manny Lumsden replaces James Fuller in the attack.

He starts with a short ball and Nick Kelly ducks it.

Kelly taps a single into the lg side.

Width! Cut! Four to Ben Cox!

Four more off the next ball - this time cut behind square!

A few supporters are starting to sing "Leicestershire! La, la, la..."

The over enthusiastic announcer called it five runs too early but Ricardo Vasconcelos does go on to reach the 68 he needed to reach a thousand championship runs for the season.

He becomes the third player to reach that treasured landmark this season following Durham's David Bedingham and Joe Clarke of Nottinghamshire.

It's been a remarkable season for the 28-year-old who is now chasing his sixth century of the season

A lovely cover drive for four from Dan Lawrence who's got Surrey going again after they'd gone through a slow period.

They require a bit more than 4-and-a-half a over to pull off an incredible run chase.

Gloucestershire's pursuit of 392 to beat Middlesex isn't going well.

They've already lost three wickets, including Miles Hammond first ball.

Durham have been bowled out for 235 in their second innings at Chester-le-Street - Matthew Potts the last batter to go after a breezy 35.

It means Worcestershire will require 253 for victory and to hand the Division Two champions their first defeat of the season.

Quick single to Ben Cox off Felix Organ, pushing the spinner down the ground.

Turn for Organ this time as Nick Kelly goes back and misses outside off stump. Palpable tension for both teams really.

130-odd doesn't feel like a lot with six wickets in hand - though one must factor in the importance of the chase plus the second new ball - due in 12 overs.

Kelly will keep the strike with a single driven to mid off.