It's the last rites here at The Oval. James Hildreth did get to a well-deserved fifty but went soon after attempting the impossible of keeping Somerset in the hunt.

Lewis Gregory is also doing his best under the lights, with a big six off Azhar Mahmood, but the result is not in doubt now.

A good fight back from Yorkshire but ultimately in vain as Ben Duckett hits Matthew Fisher to the boundary to ensure victory.

Duckett finishes unbeaten on 40 from 26 balls, with six boundaries and guided Northants through the tricky final overs well.

Yorkshire's batting ultimately cost them. It was a promising performance from their young bowlers but it has rounded off another disappointing T20 seson for the White Rose.

Worcestershire can't throw this game away, surely?

Richard Oliver has just become Derbyshire's third scalp, while the run rate has increased to more than eight an over.

Remember, a win and the Rapids are into the last eight.

The required run rate creeps up above 10-an-over once again for Sussex.

Australian George Bailey is at the crease for the hosts alongside Chris Nash but he can't quite get himself off and running yet as Will Smith restricts him to just singles.

75 needed off the last 7 overs for a place in the quarter-finals.

Tim Ambrose shows some experience and nerve for a tense situation with two fours in an over off Arron Lilley.

But, he looks to repeat the feat down the ground and gets caught on the boundary by Liam Livingstone.

Lancashire picking up wickets at regular intervals here. Birmingham Bears need 26 off 13 balls.

Matthew Waite hasn't done bad on debut for Yorkshire, finishing his four over spell with figures of 0-27.

Northants have judged this innings well. Ben Duckett meanwhile is just beginning to free his arms as he launches Ben Coad for a huge six.

Alex Wakely has fallen just shy of a half-century, but his 45 from 41 balls has set Northants up nicely. They require eight from the final 12 balls.

Northants will qualify if either Nottinghamshire or Lancashire lose. It'll be a waiting game once this one is over.

Jesse Ryder is making it look easy. So are Essex in their run chase. He celebrates going to his half-century by ramping Harry Podmore over short fine leg for another boundary.

However, just when it seemed he might steer the hosts home he mis-times a cut off Mitchell McClenaghan and Ollie Rayner takes a simple catch at point.

It all seems a little bit too late for Middlesex, who are heading for their eighth T20 defeat in nine matches.

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Great figures from Lancashire captain Steven Croft from his four overs. Just 16 runs taken off him and two wickets to his name in the process.

Not a bad evening really when you consider he struck an unbeaten 65 earlier.

Could be set for a tight finish at Edgbaston with the Bears needing 43 off the remaining 24 balls.

Some of the Durham fans have seen enough and are already heading for the exits.

Michael Stoneman holes out to Samit Patel at deep square leg off the bowling of Steven Mullaney, to leave the hosts three down and needing 13 an over to win.

Nottinghamshire cruising to victory now at Chester-le-Street.

What do they say, get one, get two?

Hampshire have claimed a second wicket in as many overs to peg Sussex back.

Young leg-spinner Mason Crane does for Matt Machan who departs for just a single.

Sussex need a further 104 to win from 60 balls at the halfway stage of their innings.

It's clearly not going to be Somerset's night, which means they are going out in the group stages. Who would have thought that they would be in this pickle when Chris Gayle was going berserk earlier in the season?

They need just the 76 runs off four overs at a rate of 19 runs an over with five wickets in hand. A simple equation, then.

My word did Hampshire need that wicket.

Luke Wright and Chris Nash were carving the visitors apart at Hove until Yasir Arafat splits the opening partnership by bowling skipper Wright just two runs shy of their 100 partnership.

It's surely just a matter of time before Worcestershire confirm their spot in the last eight.

Richard Oliver is leading the way with 33 from 27 deliveries, as the Rapids inch their way to victory at Derby.

95 needed from 72 balls.

A spectacular catch at Edgbaston from Lancashire captain Steven Croft at point off the bowling of James Faulkner.

Diving full-stretch one-handed, he clings on to a full blooded cut shot from Laurie Evans and could that be a match-winning moment for the Lightning?

They've picked up two quick wickets in as many overs after Rikki Clarke fell for just 9 to Stephen Parry the over before.

Jesse Ryder is still going well for the home side, helped considerably by George Scott spilling the simplest of chances at square leg with the New Zealander on 36.

Middlesex could well regret that error, particularly as Tom Westley has joined Ryder and quickly advanced to 14 off 10 balls in helping Essex keep the run rate above 10 runs an over during the powerplay.

Halfway mark at Wantage Road and Northants just have their noses in front.

A good 56-run partnership between Alex Wakely and David Willey has just ended as Willey holes out to long-on off Matthew Fisher.

It's been a good bowling effort from the young Tykes, particularly from Fisher who came back well from being hit for six to dismiss Willey, but the home side's target is a run-a-ball from here.

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A huge innings from Chris Nash for Sussex as he continues to tuck in to the Hampshire bowling at Hove.

The required rate dips below 10-an-over for the first time in this run chase and James Vince's men need a wicket.

Having made a blistering start, Phil Mustard throws his wicket away as he attempts to launch Dan Christian into the stands and is instead caught by Steven Mullaney in the deep.

Graham Clark is out for a duck the next over, as Notts seamer Jake Ball rips the youngster's stumps out of the ground.

Paul Collingwood is next man up for Durham, who now need 158 from 15 overs.

The winner of this one will have one foot in the last eight.

A promising partnership has been broken at The Oval thanks to an unbelievable catch from Zafar Ansari, getting rid of Tom Cooper for 29.

The Surrey man has taken a quarter-chance one-handed at full stretch on the run just an inch off the turf to stun Cooper, who had put on 57 with James Hildreth.

It will need plenty more blows like the six from Luke Ronchi soon after his arrival at the crease for the visitors to have any hope.

BBC Radio Derby's Iain O'Brien:

"Derbyshire have got all their bowling options tonight and with a heavy four day match starting tomorrow, maybe not a bad idea to get Billy Godleman off.

"I did see him pull up on a hamstring so there may be an issue."