Four teams are into Finals Day at Edgbaston next Saturday.
Victorious Somerset will meet Hampshire again in a repeat of last year's second semi-final, won by the Cider Boys.
And Lancashire and Yorkshire will meet in the first semi at Edgbaston, the first Finals Day Roses match in 20 years of T20 cricket
The schedule is as follows:
• 11:00 BST First semi: Lancashire v Yorkshire
• 14:30 BST Second semi: Somerset v Hampshire
• 18:45 BST The Final
We shall hopefully see you all then.
Thankyou and Goodnight.
IT'S ALL OVER AT TAUNTON
Derbyshire 74 all out (11.2 overs), Somerset 265-5
Derbyshire have lost to Somerset by 191 runs - and it's by some margin a record defeat in English T20 cricket.
It beats the 144-run loss suffered by Worcestershire at Edgbaston just 15 days ago - and jubilant Somerset are heading for Finals Day for an eighth time.
But, for Derbyshire, this has been a total embarrassment.
Post update
Derbyshire 73-9 (11.1 overs), Somerset 265-5
A no ball - and Derbyshire avoid getting their lowest ever T20 score.
Post update
Derbyshire 71-9 (11 overs), Somerset 265-5
Four off that over. Benny Green to continue.
WICKET - Aitchison run out 2
Derbyshire 68-9 (10.2 overs), Somerset 265-5
Ben Aitchison goes in a comic run-out mix-up.
Derbyshire still short of their lowest ever score in T20 - of 72.
Post update
Derbyshire 66-8 (10 overs), Somerset 265-5
Ben Aitchison at least has the sense of dignity about him to avoid the hat-trick.
WICKET - Watt c Banton b Green 0
Derbyshire 65-8 (9.5 overs) v Somerset
Benny Green on a hat-trick as Mark Watt skies to square leg and Tom Banton runs to take the catch.
WICKET - Hughes c Lammonby b Green 12
Derbyshire 65-7 (9.4 overs) v Somerset
Alex Hughes is the next to go.
Post update
Derbyshire 61-6 (9 overs) v Somerset
New man Mattie McKiernan introduces himself with a boundary off Lewis Gregory.
WICKET - Madsen c van der Merwe b Gregory 14
Derbyshire 54-6 (8.2 overs) v Somerset
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Derbyshire are folding like a pack of cards.
Wayne Madsen drives straight to mid off.
Roelof van der Merwe takes trhe catch with arms above his head.
50 up for the Falcons
Derbyshire 53-5 (8 overs) v Somerset
Little victories. 50 up at least in that over for Derbyshire.
Just another 213 needed. Off 12. With half the batting gone.
Not the moment to glance over and see what the DLS is.
WICKET - Guest b Gregory 0
Derbyshire 43-5 (6.3 overs) v Somerset
Things are just going from bad to worse for Derbyshire.
Brooke Guest goes second ball, bowled by Lewis Gregory.
Alex Hughes is the next to try his luck.
Let's just hope that George Scrimshaw can bat as well as he bowled earlier. He's their only hope!
WICKET - Cartwright c sub (Bartlett) b Siddle 10
Derbyshire 42-4 (6 overs) v Somerset (265-5)
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A fourth Derbyshire wicket goes down as George Bartlett pouches a catch off Peter Siddle.
Brooke Guest comes in.
Post update
Derbyshire 36-3 (5 overs) v Somerset (265-5)
10 off that Craig Overton over.
The main job for Wayne Madsen and Hilton Cartwright now is keeping things respectable.
It's only 15 days since Worcestershire suffered the worst defeat in this competition, by 144 runs at Edgbaston, to the Birmingham Bears. That must be their first target.
Post update
Anthony Gibson
BBC Radio Somerset
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Derbyshire are just falling apart.
Psychologically they were pulverised when they chose to bowl and field first tonight.
WICKET - Du Plooy c Banton b Siddle 0
Derbyshire 26-2 (3.5 overs) v Somerset
Leus Du Plooy is out just a ball later.
Two wickets in three balls for Peter Siddle.
New man is Hilton Cartwright.
Painful blow for Leus du Plooy
Derbyshire 26-2 (3.4 overs) v Somerset
Painfiul blow for Derbyshire skipper Leus du Plooy, who is hit on the left elbow.
He needs treatment - but he looks in trouble.
WICKET - Reece c Rossouw b Siddle 13
Derbyshire 26-2 (3.3 overs) v Somerset
Luis Reece is the second man to go.
Leus Du Plooy is the new man.
Post update
Derbyshire 14-1 (2 overs) v Somerset (265-5)
Dave Fletcher
BBC Radio Derby Sport
It's quite a subdued atmosphere here inside the County Ground here now. It's unsurprising as we all know the result. We are just waiting for the end.
Post update
Derbyshire 14-1 (2 overs) v Somerset (266-5)
Only five off the second over, which ends with a turned-down LBW review against Luis Reece.
Craig Overton stays on for a second over.
Atmosphere now a little subdued. Few in the Taunton crowd give the visitors any chance of even getting close here.
Live Reporting
Ged Scott
All times stated are UK
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Rex FeaturesCopyright: Rex Features 
Rex FeaturesCopyright: Rex Features 
Latest PostFinals Day running-order at Edgbaston
Edgbaston, Saturday 16 July (11:00 BST)
So that's it from Taunton after a total mismatch.
Four teams are into Finals Day at Edgbaston next Saturday.
Victorious Somerset will meet Hampshire again in a repeat of last year's second semi-final, won by the Cider Boys.
And Lancashire and Yorkshire will meet in the first semi at Edgbaston, the first Finals Day Roses match in 20 years of T20 cricket
The schedule is as follows:
• 11:00 BST First semi: Lancashire v Yorkshire
• 14:30 BST Second semi: Somerset v Hampshire
• 18:45 BST The Final
We shall hopefully see you all then.
Thankyou and Goodnight.
IT'S ALL OVER AT TAUNTON
Derbyshire 74 all out (11.2 overs), Somerset 265-5
Derbyshire have lost to Somerset by 191 runs - and it's by some margin a record defeat in English T20 cricket.
It beats the 144-run loss suffered by Worcestershire at Edgbaston just 15 days ago - and jubilant Somerset are heading for Finals Day for an eighth time.
But, for Derbyshire, this has been a total embarrassment.
Post update
Derbyshire 73-9 (11.1 overs), Somerset 265-5
A no ball - and Derbyshire avoid getting their lowest ever T20 score.
Post update
Derbyshire 71-9 (11 overs), Somerset 265-5
Four off that over. Benny Green to continue.
WICKET - Aitchison run out 2
Derbyshire 68-9 (10.2 overs), Somerset 265-5
Ben Aitchison goes in a comic run-out mix-up.
Derbyshire still short of their lowest ever score in T20 - of 72.
Post update
Derbyshire 66-8 (10 overs), Somerset 265-5
Ben Aitchison at least has the sense of dignity about him to avoid the hat-trick.
WICKET - Watt c Banton b Green 0
Derbyshire 65-8 (9.5 overs) v Somerset
Benny Green on a hat-trick as Mark Watt skies to square leg and Tom Banton runs to take the catch.
WICKET - Hughes c Lammonby b Green 12
Derbyshire 65-7 (9.4 overs) v Somerset
Alex Hughes is the next to go.
Post update
Derbyshire 61-6 (9 overs) v Somerset
New man Mattie McKiernan introduces himself with a boundary off Lewis Gregory.
WICKET - Madsen c van der Merwe b Gregory 14
Derbyshire 54-6 (8.2 overs) v Somerset
Derbyshire are folding like a pack of cards.
Wayne Madsen drives straight to mid off.
Roelof van der Merwe takes trhe catch with arms above his head.
50 up for the Falcons
Derbyshire 53-5 (8 overs) v Somerset
Little victories. 50 up at least in that over for Derbyshire.
Just another 213 needed. Off 12. With half the batting gone.
Not the moment to glance over and see what the DLS is.
WICKET - Guest b Gregory 0
Derbyshire 43-5 (6.3 overs) v Somerset
Things are just going from bad to worse for Derbyshire.
Brooke Guest goes second ball, bowled by Lewis Gregory.
Alex Hughes is the next to try his luck.
Let's just hope that George Scrimshaw can bat as well as he bowled earlier. He's their only hope!
WICKET - Cartwright c sub (Bartlett) b Siddle 10
Derbyshire 42-4 (6 overs) v Somerset (265-5)
A fourth Derbyshire wicket goes down as George Bartlett pouches a catch off Peter Siddle.
Brooke Guest comes in.
Post update
Derbyshire 36-3 (5 overs) v Somerset (265-5)
10 off that Craig Overton over.
The main job for Wayne Madsen and Hilton Cartwright now is keeping things respectable.
It's only 15 days since Worcestershire suffered the worst defeat in this competition, by 144 runs at Edgbaston, to the Birmingham Bears. That must be their first target.
Post update
Anthony Gibson
BBC Radio Somerset
Derbyshire are just falling apart.
Psychologically they were pulverised when they chose to bowl and field first tonight.
WICKET - Du Plooy c Banton b Siddle 0
Derbyshire 26-2 (3.5 overs) v Somerset
Leus Du Plooy is out just a ball later.
Two wickets in three balls for Peter Siddle.
New man is Hilton Cartwright.
Painful blow for Leus du Plooy
Derbyshire 26-2 (3.4 overs) v Somerset
Painfiul blow for Derbyshire skipper Leus du Plooy, who is hit on the left elbow.
He needs treatment - but he looks in trouble.
WICKET - Reece c Rossouw b Siddle 13
Derbyshire 26-2 (3.3 overs) v Somerset
Luis Reece is the second man to go.
Leus Du Plooy is the new man.
Post update
Derbyshire 14-1 (2 overs) v Somerset (265-5)
Dave Fletcher
BBC Radio Derby Sport
It's quite a subdued atmosphere here inside the County Ground here now. It's unsurprising as we all know the result. We are just waiting for the end.
Post update
Derbyshire 14-1 (2 overs) v Somerset (266-5)
Only five off the second over, which ends with a turned-down LBW review against Luis Reece.
Craig Overton stays on for a second over.
Atmosphere now a little subdued. Few in the Taunton crowd give the visitors any chance of even getting close here.