Big appeal from Ben Allison as Colin Ackermann plays across the line again and is thumped on the pad, but it's heading down leg and the vociferous appeal smacked more of desperation than anything.

Jamie Smith is again down the track to Tom Lammonby, cutting through the off side for a single to move on to 53.

Ben Foakes drives but doesn't get the ball away this time.

Just the one run in that over.

Ben McKinney's hesitation almost costs his side a run-out as Colin Ackermann is nearly shaking hands in his crease at the non-striker's end after driving to mid-on, before the 20-year-old hares down the other end.

Jacob Duffy's throw was, luckily for Durham, not close to either set of stumps.

Frank Watson
BBC Hereford & Worcester

It's been an extraordinary game, though not entirely a satisfactory one for both sides.

It's a good line, now you know how T20 bowlers feel. The batters knowing the odds are stacked against them.

if you can just bowl them in the right areas, you'll eventually get your rewards.

Colin Ackermann, a vastly experienced, top-class player... his bat is being beaten on frequent occasions.

It's hard, hard work batting out there.

Four runs to Oli Carter, via an outside edge that guides the ball wide of the three slips off Fergus O'Neill.

Single to James Coles, driving Farhan Ahmed down the ground.

The deficit is down to 19 but the pressure is very much on Sussex to see out the day with some batting in hand.

Good start from Ben Foakes, who strokes two fours off Jack Leach, both driven through cover on the back foot.

Maiden over from Tom Lammonby at the other end.

Surrey are 48 behind.

An early wicket for Leicestershire as Ben Charlesworth is bowled by the in-form Ian Holland, caught by Peter Handscomb, leaving them 13-1 which is not the start Gloucestershire wanted to their second innings as they have nudged three runs ahead.

Cameron Bancroft will be hoping to have a longer stay this time out as he was dismissed for no score in the first innings.

Middlesex have also suffered a first dismissal of their innings as Nathan Fernandes is removed early-on by Blair Tickner, caught by his former teammate Martin Andersson - whom he bowled earlier to end his 107-run innings.

It's a big total for the visitors to aim for and the partnership of Stephen Eskinazi and Max Holden will be important here.

Colin Ackermann is beaten all ends up from Tom Taylor's first ball, playing inside the line as the ball glides past his off stump.

The pressure has now swung back onto the visitors...

Tom Haines will face the off spin of Farhan Ahmed to get the session started.

Sussex need to keep wickets in hand to stay in the game.

Haines has 63 and his batting partner James Coles is on four.

It feels like Durham's belief is growing as Worcestershire's ebbs away.

First-change Ben Allison gives up boundaries to Will Rhodes and Ben McKinney in the space of three balls in his opening over and the partnership swells to 33.

Nine off the over.

73 required...

50 for Jamie Smithpublished at 16:32 British Summer Time

16:32 BST

Surrey 225-3 v Somerset 283

Jack Leach bowls to Jamie Smith on 49.

He drives without piercing the off side field then defends down the ground.

The fourth ball is nudged leg side for two and that's an 83-ball 50 for Smith with five fours.

His second 50 of the season after making his first here v Hampshire.

He's played and missed, spooned one ball from Tom Taylor agonisingly close to a fielder but ben McKinney replies with a gorgeous lofted straight drive for four to move to nine.

The deficit is 82 and Worcestershire will feel they need a wicket, soon...

Dave Bracegirdle
BBC Radio Nottingham commentator

Sussex ran into stormy waters towards the back end of an afternoon session that had appeared to be going well for them.

Beginning their second innings 131 adrift, Tom Haines and Daniel Hughes wiped out 89 of them without too much difficulty, although Joe Clarke put down Haines on 34.

Farhan Ahmed changed the complexion of events, having Hughes caught behind and Clark lbw, with Fergus O’Neill joining the party as Tom Alsop fell cheaply for the second time in the match.

Haines, who was clonked on the helmet early on by Josh Tongue, remains and needs support if the visitors are going to set Notts a challenging target in the final innings of the match.

Two runs to Ben Foakes off a Jack Leach full toss, swept to deep backward square.

One more, driving inside-out to mid off.

Jamie Smith gets a single into long off to move to 48.

A meaty cut from Will Rhodes despatches another wide one from Jacob Duffy to the boundary.

He's waiting for any hint of width and then punishing it.

The partnership is 19 from 26 balls. Priceless.

87 needed to win. 34 overs left in the day, in theory...

Ben Foakes will take strike first to start the session, facing left arm spinner Jack Leach.

He's 17 not out.

Jamie Smith looked a little skittish just before the break, driving at Tom Lammonby every ball of the last over but he's still there on 47.

Tom Taylor gets one to spit up at Ben McKinney who takes a stroll away to clear his head after taking it on the handle.

Play and miss from the 20-year-old opener next up and he takes another big swipe at the final ball, missing the edge again.

Nervy stuff.

Maiden over from Taylor.

Division One

Surrey 218-3 Burns 76*, Sibley 53 v Somerset 283 - Lammonby 76 Clark 5-68

Notts 300 - Robinson 4-94 v Sussex 169 & 106-3 - Tom Haines 61* - Tongue 5-44

Worcestershire 162 & 81 - Ball 5-47 v Durham 136 & 8-1 - Raine 4-20, Codi Yusuf 4-26

Division Two

Gloucestershire 252 & 8-0 v Leicestershire 262 - Lewis Hill 55, Goodman 5-54

Derbyshire 472 - Andersson 107 v Middlesex 11-0