Steven Croft is right on the spot and there is a hint of turn for the Lancashire spin bowler. Two singles and a wide are followed by four dot balls. Saqib Mahmood will bowl the next over.

Ravi Bopara tries to hammer Callum Taylor down the ground and only succeeds in edging to third man. He is gone for 12 and David Wiese follows in the next over, lbw for six to Roman Walker.

Here we go. Adam Lyth and recent loan signing Mark Stoneman will open for Yorkshire - two lefties together. Spinner Steven Croft has the ball for Lancashire Lightning. Which rose will flourish and bloom and which one will wilt?

Shot of the game so far? Ravi Bopara drives Dan Douthwaite stylishly through the covers at the start of a new over. He is 11 not out and partner Travis Head has five. Sussex will be looking to push on beyond 200 in the four overs remaining, if they can.

Elsewhere in the North Group this evening, table-toppers Notts go up against third-placed Birmingham at Edgbaston, with the latter winning by 18 runs in the battle between the two sides at Trent Bridge last month.

Rob Yates replaces Carlos Brathwaite for the Bears after the former West Indies captain tested positive for Covid-19 and his side will bowl first after winning the toss.

Birmingham: Pollock, Hose, Rhodes, Hain, Yates, Lamb, Burgess, Bresnan, Lintott, Briggs, Miles.

Notts: Hales, Duckett, Slater, Trego, Patel, James, Mullaney, Fletcher, Carter, Harrison, Ball.

Just 10 minutes to go to the Yorkshire v Lancashire showdown.

Which way is this one going to go?

After an opening partnership of 144, Phil Salt and Luke Wright depart in the space of three deliveries at Sophia Gardens.

Salt is bowled for 63, with one hand coming off the bat as he tries to drive Dan Douthwaite, and following a single for Ravi Bopara, Wright tries to cut and edges to the keeper, having made 77 off 41 balls.

Image source, Rex

Yorkshire and Lancashire have met 30 times in T20 matches, with the Lightning ahead by 16 wins to 12. There have been two ties and four abandonments.

They achieved a double last summer, winning by six wickets at Headingley and by seven runs at Old Trafford three days later, despite Joe Root's 64.

You have to go back to August 2017 for Yorkshire's last victory over their arch-rivals when Tim Bresnan took 6-19 as they came out on top by 19 runs.

Harry Brook has scored 372 runs - a total exceeded only by Middlesex's Stevie Eskinazi - in this summer's competition, while leg-spinner Matt Parkinson has 12 wickets for Lancashire at a cost of just 22 runs each. Theirs could be a key battle this evening.

Sussex's highest total in this year's T20 Blast is 178-5 against Gloucestershire, but that is looking seriously under threat this evening.

Luke Wright hammers Sam Pearce over long-off for six and is now 70 not out, with Phil Salt on 63.

Durham won by two wickets when these two met three weeks ago, and both sides come into tonight after defeats in their last fixtures.

Spinner Liam Trevaskis is out after coming into contact with a positive Covid-19 case, while Leicestershire line up with Naveen-ul-Haq, the leading wicket taker in this year's Blast and have elected to bowl first.

Image source, Getty Images

Durham: Bedingham, Clark, Stokes, Bancroft, Dickson, Eckersley, Carse, Raine, Potts, Crawshaw, Campbell.

Leicestershire: Steel, Inglis, Lilley, Ackermann, Hill, Patel, Swindells, Mike, Parkinson, Naveen, Griffiths.

A couple of sides here coming into this evening's fixture off the back of decent wins on Thursday.

Somerset took bragging rights in the West Country derby against Gloucestershire at Bristol and they had named an unchanged side until a late knee injury to skipper Lewis Gregory in the warm-up forces him to sit this one out.

Craig Overton captains in his absence and Tom Lammonby comes in.

Middlesex, who have won the toss and elected to bowl, picked up a welcome win against Sussex and are unchanged for this one.

Somerset: Bartlett, Conway (wk), Smeed, Goldsworthy, Lammonby, Byrom, Green, Overton (capt), De Lange, Brooks, Waller.

Middlesex: Eskinazi, Holden, Cracknell, Mitchell, Simpson (wk), Hollman, Sowter, Helm, Mujeeb, Cullen, Finn (capt).

for Phil Saltpublished at 18:06 British Summer Time 2 July 2021

18:06 BST 2 July 2021

Sussex 125-0 v Glamorgan (11 overs)

Phil Salt follows opening partner Luke Wright to 50 with a simple single off James Weighell. It has taken Salt only 28 balls and he celebrates with a swish over square leg for six later in the over.

Sussex are going great guns here, with nine overs to come.

Yorkshire Vikings have won the toss at Headingley and they will bat on a pitch which skipper Adam Lyth says has been used a couple of times before.

Harry Duke comes into their side behind the stumps, replacing Jonny Tattersall, while Lancashire keep the team that beat Worcestershire last night.

Yorkshire: Lyth, Stoneman, Thompson, Brook, Ballance, Hill, Bess, Duke, Waite, Fisher, Ferguson.

Lancashire: Allen, Jennings, Davies, Jones, Vilas, Croft, Wells, Wood, Hartley, Mahmood, Parkinson.

Andrew Salter managed to calm things down a bit in that over, yielding just four singles to the Sussex openers. Luke Wright is now 53 and Phil Salt has 34.

for Luke Wrightpublished at 17:54 British Summer Time 2 July 2021

17:54 BST 2 July 2021

Image source, Rex

A simple push to leg off Sam Pearce and a single takes Luke Wright to a 24-ball fifty for Sussex Sharks. It's his second of the season, and 44th in all - to go with seven hundreds.

It is stating the obvious to say that Glamorgan need a wicket. But, boy, do they need a wicket. Roman Walker's two overs so far have cost him 29 runs and there were four more boundaries in the latest. Luke Wright is on 36 and Phil Salt 24.

Glamorgan have tried four different bowlers so far, but the boundaries keep coming - four of them in one over from David Lloyd.

Luke Wright comes down the track and clears mid-off for the last of them and he is 28 not out, with Phil Salt on 15.

What do you make of your new signing, Falcons fans?

Tweet #bbccricket and let us know.

Postpublished at 17:38 British Summer Time 2 July 2021

17:38 BST 2 July 2021

Sussex 19-0 v Glamorgan (2 overs)

We don't know a lot about Glamorgan's Roman Walker - but it would be nice to think that he mutters 'sinister, dexter, sinister, dexter' to himself as he trudges back towards his mark.

There's a boundary for Luke Wright, whipped away through mid-wicket, and he ends the over by lofting high, wide and handsome for the game's first maximum.

Off-spinner Andrew Salter bowls the opening over at Sophia Gardens.

Luke Wright goes down on one knee and sweeps off the stumps for four to backward square leg. He might have been in trouble if he'd missed it.