Eight matches in T20 Blast
Roses match ends in tie as Yorkshire's Harry Brook out lbw last ball
Defending champions Kent Spitfires lose to Essex Eagles
Jason Roy makes 15 on Surrey return in victory against Glamorgan
Also wins for Northants, Notts Outlaws, Middlesex, Gloucs & Birmingham Bears
South Group update
Sussex have claimed another wicket in the South Group as Ian Cockbain falls off the bowling of Steven Finn. Gloucestershire are now 37-2.
And Glamorgan are going steady at 38-1 at Surrey.
Both matches are into the sixth over.
Lancashire 52-1 (5 overs) v Yorkshire
The hokey-cokey of the bowling continues as Haris Rauf returns for his second over.
He delivers a bouncer which even Lanky the Giraffe would have struggled to reach, and is called for a no-ball.
Apart from that, it's a quality over with some fine yorkers and only four off it until Phil Salt hits the last one to the fence.
Jennings c Lyth b Revis 19 (Lancashire 44-1 v Yorkshire)
Yorkshire strike!
Keaton Jennings tries to follow Phil Salt's lead but hits it into the hands of Adam Lyth at mid-on.
Image source, Getty Images
Lancashire 44-0 (3.4 overs) v Yorkshire
A fourth over brings a fourth bowler in Matt Revis. Keeping everyone on their toes here, Mr Root!
Phil Salt helps himself to the first maximum of the night into the leg-side and the fans are singing.
#bbccricket
Jack Rule: Friday night, decent start time, a close to full house with reasonable ticket prices.
Two rival teams with a lot of history. Lots of atmosphere made by the crowd. This is what T20 cricket should be about! This is what we should be doing with the T20 game.
North Group update
Image source, Rex FeaturesPlenty going on away from Old Trafford in the North Group.
Northamptonshire have stormed to 37-0 off four overs against Durham.
While Alex Hales is already into the action for the fielding Notts Outlaws, taking a catch to remove Worcestershire's Ed Pollock.
Worcestershire are 39-1 after four.
Lancashire 32-0 (3 overs) v Yorkshire
Spin from both ends now as Pakistan leggie Shadab Khan is thrown the ball.
But when he drops short, Phil Salt pummels it for four, and he's then pulled for four more.
A sweep brings up a third boundary of the over and the '4' signs are waving again.
Lancashire 19-0 (2 overs) v Yorkshire
The off spin of Dom Bess to open at the Brian Statham End - inspired? Let's find out.
Four - Keaton Jennings strokes one through the covers beyond Joe Root's chase. The home fans enjoyed that one.
A reverse sweep gets another boundary as they clock up 12 from the over.
Not sure that's what Root wanted from him.
Lancashire 7-0 (1 over) v Yorkshire
Pakistan quick Haris Rauf with ball in hand - wide - let's start again please!
Keaton Jennings scoops one down to fine leg for the first boundary as Lancashire get seven off the over.
South Group update
Early wicket already as Gloucestershire's Miles Hammond is run out by Sussex. It's 9-1 after one over.
Elsewhere in the South Group, Glamorgan have made a measured start at Surrey. 1-0 after three deliveries.
Lancashire v Yorkshire (18:30 BST)
Image source, BBC SportThe crowd are gathering and there have already been a few chants of 'Lancy, Lancy' from the stands, as well as a couple of less favourable ones from their friends from across the M62.
Phil Salt and Keaton Jennings will have the job of getting the party started with the bat for those spectators.
Lancashire v Yorkshire (18:30 BST)
Home captain Dane Vilas has called correctly and is going to bat.
There is a debut for Singapore international and T20 specialist Tim David and a first Lancashire appearance of the season for Liam Livingstone, back from his stint in the IPL with Punjab Kings.
Yorkshire, with Joe Root again captaining, are unchanged from the win over Worcestershire.
Lancashire: Salt (wk), Jennings, Croft, Livingstone, Vilas (c), David, Lamb, Wood, Hartley, Gleeson, Parkinson.
Yorkshire: Lyth, Malan, Kohler-Cadmore (wk), Root (c), Brook, Khan, Thompson, Revis, Bess, Rashid, Rauf.
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Image source, Getty ImagesWe have already seen 12 teams make their bow, but the remaining six counties get to flex their muscles tonight.
Semi-finalists from last year, Hampshire Hawks welcome Middlesex to the Ageas Bowl, with Middlesex fresh from their record T20 score of 229 last night.
Notts Outlaws, champions in 2020, winners of the North group last year are always a dangerous opponent in the Blast. They entertain Worcestershire Rapids at Trent Bridge.
Derbyshire Falcons, led by prolific Pakistan batter Shan Masood, entertain Birmingham Bears off the back of Paul Sterling's fireworks last night at Edgbaston in smashing the first Blast hundred of the summer.
It is now 19 years since Surrey won the inaugural T20 competition and there should be a big Friday night crowd at The Oval for the visit of Glamorgan.
While Essex Eagles, winners three years ago, are at Canterbury to take on Kent Spitfires, whose defence began with defeat by Somerset two days ago.
Elsewhere, Northamptonshire Steelbacks play Durham and last year's semi-finalists Sussex Sharks are in Bristol to face Gloucestershire.
Lancashire Lightning v Yorkshire Vikings (18:30 BST)
Image source, Getty ImagesCoronation Street or Emmerdale? Meat pie or Yorkshire pudding? A trip to Blackpool or a day out in Scarborough?
Two great counties divided by the Pennines and ready for one of the marquee fixtures of the T20 Blast - the Roses Match.
Over 14,000 will pack into Old Trafford for this game as Lancashire begin their Blast campaign. They have won six of the last ten T20 encounters between the sides with the White Rose winning only two.
Yorkshire started with a seven-wicket victory over Worcestershire in Leeds two nights ago and they are chasing a first success on 'enemy territory' since 2014 when Australia star Aaron Finch bludgeoned 88 in a five-wicket win with three balls to spare.
All matches start at 18:30 BST unless stated
North Group:
South Group:
Image source, Getty ImagesThe Vitality T20 Blast returned to action on Wednesday and then last night, but tonight is the one when it really feels like it's back.
Eight matches and 16 teams playing up and down the country.
It's the start of the school holidays, a great sporting weekend in prospect and what better way to begin than a fantastic Friday night at the cricket!
Matches start at 18:30 BST unless stated
Gloucestershire v Sussex Sharks - BBC Radio Bristol & BBC Radio Sussex
Lancashire Lightning v Yorkshire Vikings - BBC Radio Lancashire & BBC Radio Leeds
Northamptonshire Steelbacks v Durham - BBC Radio Northampton
Notts Outlaws v Worcestershire Rapids - BBC Radio Hereford & Worcester
Surrey v Glamorgan - BBC Radio London & BBC Radio Wales
Derbyshire Falcons v Birmingham Bears (19:00 BST) - BBC Radio Derby & BBC CWR
Hampshire Hawks v Middlesex (19:00 BST) - BBC Radio Solent
Kent Spitfires v Essex Eagles (19:00 BST) - BBC Radio Kent & BBC Essex