Having completed his second century of the match with the last ball before lunch, Keaton Jennings' next consideration will be what kind of target he wants to set Durham.

Lancashire's lead is currently 327 and you'd think they'll want to extend that by at least another 100 before thoughts of a declaration materialise.

Ben Raine gets the afternoon session under way with the ball.

Adrian Harms
BBC Sussex

This is a terrific advertisement for county cricket with game hanging in the balance at lunch on the third day.

The dismissal of Joe Root and George Hill just before lunch has maybe tilted the scales in favour of Sussex, but Adam Lyth is still there and his experience could be crucial in the outcome of this game.

Anthony Gibson
BBC Radio Somerset

Whatever silent prayers may have been said for early Kent wickets at Somerset County Cricket Club's annual church service before the start of play were emphatically answered as Somerset's seamers mopped up their visitors' last five wickets in 70 minutes, at a cost of just 70 runs.

The follow-on was duly enforced, but any illusions as to a win in three days were put in their proper perspective as Zak Crawley and Ben Compton made a largely untroubled way through to lunch.

Somerset are still favourites, but taking the 10 wickets they need will be anything but easy on a placid pitch with nothing yet in it for Jack Leach.

Dave: Excellent recovery from Clarke and Haynes continues the theme of this match. Early wickets followed by recovery. Much work still to do, but a fascinating tussle going on.

Notts lead Hampshire by 85 with six wickets still in hand at lunch.

Image source, Rex Features

Gareth Griffiths
BBC Sport Wales at Sophia Gardens

Glamorgan trail Middlesex by 127 runs as they moved onto 33-0 in their second innings at lunch on the third day in Cardiff.

Middlesex started the third day on 303-6 but only added 40 runs before being bowled out for 343, a first innings lead of 160.

Andy Gorvin, James Harris, Mason Crane and Jamie McIlroy took a wicket each for the hosts.

Harris was Glamorgan's most successful bowler with figures of 4-84, while the in-form Middlesex batter Ryan Higgins was unbeaten on 75.

Australian Test batter Marnus Labuschagne again opened the innings on his first Glamorgan appearance of the season and was nine not out at the end of the opening session, while Eddie Byron was unbeaten on 24.

Div One

• Essex 162 & 20-2 (target 330) v Warwickshire 397 & 94
• Lancashire 357 & 206-4 v Durham 236
• Notts 235 & 126-4 v Hampshire 276
• Somerset 554 v Kent 178 & 47-0 (f/o)
• Surrey 213 & 427 v Worcs 128 & 22-1 (target 513)

Div Two

• Derbyshire 274-6 v Northants 422
• Glamorgan 183 & 33-0 v Middlesex 343
• Leics 210-5 v Gloucs 706-6 dec
• Sussex 150 & 227 v Yorkshire 195 & 45-4 (target 183)

Martin Emmerson
BBC Radio Newcastle

Keaton Jennings has become the first Lancashire player to score hundreds in both innings at Blackpool.

At lunch on day three he has 100, to add to his 115 in the first innings. He has been a thorn in the side for his former team-mates.

He survived a loud shout for LBW off Ben Raine in the early exchanges of the morning. He also edged Ben Stokes to the slips on 75 but a no ball had been called.

Lancashire are building a big lead here. One that already may be insurmountable for Durham. However the track remains good and there are plenty of runs left in this pitch.

Back in 2016, when Jennings scored seven centuries for Durham, he scored two in the opening game of the season against Somerset in Chester-le-Street. He's looked the part again this weekend.

Migael Pretorius starts with a floating slower ball that Zak Crawley defends.

Crawley is forward to the fourth ball with a clip to leg for one.

A short ball outside the line of off stump is pulled in front of square by Ben Compton for four.

Compton sees out the over with a push to long off for no run and that's the end of the session.

A solid start from Kent in their follow on after losing their last five first-innings wickets for 70 this morning.

The pitch is playing very well and it will be no mean feat for Somerset to take another 10 wickets, possibly minus the bowling of Josh Davey who was off the field this morning.

Kevin Howells
BBC Test Match Special commentator

Keaton Jennings gets his second century in the game, on exactly 100.

He got the applause from Ben Stokes and others from the Durham team, they know him so well of course, county days as well as international.

A terrific knock from Keaton Jennings, he gets there just in time to do an enjoy his lunch even more on reaching that century.

Ben Compton is forward to Jack Leach, playing the left arm spinner defensively into the off side.

A hint of turn there as Compton is forward, deflecting the ball into the on side for two.

Time for one more over before lunch, earmarked for 1:10pm.

That wicket of George Hill brings lunch.

It'll taste pretty good for Sussex with Yorkshire still needing 138 for victory.

A great start to the morning session for Hampshire, with those three wicket for Kyle Abbott, but since then it's been all Nottinghamshire thanks to this unbroken partnership of 82 between Joe Clarke and Jack Haynes.

Clarke has 52 and Haynes 31 at lunch, with Notts now in front by 85 overall.

Migael Pretorius is back in the attack and Sean Dickson is quickly across a straight drive from Zak Crawley to prevent the run.

Crawley nearly hits a return catch to the bowler but the ball lands just short.

Good stop though and that will sting a bit. Sweet timing.

Maiden over.

The pendulum seems to have swung back in Warwickshire's favour with those two early wickets, but surely there are further twists to come.

Essex pair Dean Elgar and Tom Westley have made it through to lunch on seven and three respectively - with another 310 needed for victory.

Image source, Rex Features

Keaton Jennings was determined to get there before lunch - and he reaches his century for the second time in this match with the final ball of the session.

The Lancashire captain glances Paul Coughlin away on the leg side and quickly scampers the two he needed to take him to exactly 100.

Tom Bruce is on 27 at the other end and Lancashire go to lunch with a lead of 327.

Kashif Ali is forward to Kemar Roach, pushing the ball defensively into mid on.

The fourth ball drifts into leg stump and is clipped away neatly for four.

Kashif sees out the over - and that's lunch.

Another good mini session of play for Surrey with the early wicket of Gareth Roderick, caught down the leg side by keeper Ben Foakes off the bowling of Dan Worrall.

Zak Crawley seizes on a bit of width from Craig Overton and unleashes a superb cover drive for four runs to move on to 19.

He hasn't been in the best form this summer with a top score so far of 41 but that is a snapshot of the opener at his best.

Image source, Rex Features

Joe Clarke goes to his half-century from 91 balls, taking an easy single off Felix Organ and it's been a solid effort by the Nottinghamshire batter this morning.

The good news for Notts is that, when Clarke gets past 50 this season, he goes big - with two centuries and a double ton to his name so far.