Rossington's 67* gives Northants win
Middlesex post 132-7 (20 overs)
Bailey top scores with 46 for visitors
Notts beat Essex in first quarter-final
T20 Blast Finals Day on 20 August
That concludes our text coverage of tonight's T20 Blast quarter-final. Many thanks for joining us - we'll be back with the third last-eight match, between Gloucestershire and Durham, at 18:30 BST tomorrow.
Northants 135-3 (18.1 overs) v Middlesex 132-7
Northants are heading back to Edgbaston, as Adam Rossington's 67 from 53 balls gives them a commanding victory over Middlesex with 11 balls remaining.
Northants need two from 12 balls
A four from the bat of Alex Wakely takes Northants to the brink - just a couple more runs needed.
Northants need just nine more runs from 18 balls. They're going to do this with some room to spare.
James Taylor
Ex-England batsman on BBC Radio 5 live sports extra
Another six and a couple of singles later and Adam Rossington, now 60 not out, looks likely to have won this quarter-final for Northants.
Quote MessageWhat a performance from Adam Rossington tonight. He's had an absolute blinder - he's played such a sensible innings.
Northants 110-3 (15.1 overs) v Middlesex 132-7
Image source, Getty ImagesAnd it might well be that this next over, from Harry Podmore, is the one Northants go after.
Adam Rossington smashes the first ball for six to move onto 53 from 45 balls.
Alex Wakely has joined Adam Rossington in the middle, as that last Nathan Sowter over goes for just five.
Northants need 29 from 30 balls now.
Game on? Northants require 34 from 36 balls.
Northants 98-3 (13.5 overs) v Middlesex 132-7
Image source, Getty ImagesNow then, what've we got here?! A lifeline for Middlesex, perhaps.
Ben Duckett is caught by George Bailey off the bowling of Toby Roland-Jones and it's a wicket that might just keep the visitors' hopes of making T20 Blast Finals Day alive.
Nothing to see here, folks. Just Northants cruising along. Ben Duckett onto 23, Adam Rossington to 43.
That's massive from Adam Rossington, plonking Ryan Higgins into the standards for his second maximum to move to 40. All looking rather routine for the home side, who are dragging the required rate down if anything.
Northants need 54 from 54 balls
Ollie Rayner's first over is pretty economical, just six runs from it, but we're at a stage where Northants can most certainly afford to milk the bowling - 54 from 54 needed.
Image source, Getty ImagesThe two Northants batsmen continue to go about their business very nicely, the in-form Ben Duckett smashes successive fours to move to 19 from 13 balls.
WASP rates their chances at 96%, and who'd argue with a WASP?
Ollie Rayner's into the attack.
Adam Rossington (25 not out) and Ben Duckett (10 not out) have calmed things down quite nicely since the wicket of Josh Cobb. Northants need 72 from 66, which should be relatively comfortable fare.
Spinner Nathan Sowter, at the tender age of 23, is into the action now - but sends down five wides first up. Not ideal.
But he recovers well - and even creates a chance from the bat of Ben Duckett, but Nick Gubbins at cover can't quite cling on to a difficult chance down to his right.
James Franklin continues with the ball after the powerplay and, following three dots, limits the damage from that over to just the three runs. All very nip and tuck here.
James Taylor
Ex-England batsman on BBC Radio 5 live sports extra
Quote MessageI reckon chasing you know exactly where you want to be and how to time everything, and that is exactly what Northants like doing - they like chasing. Northants are still in control, I think.
Northants 41-2 (6 overs) v Middlesex 132-7
That Josh Cobb wicket might well have just knocked the wind out of Northants' sails - it leaves them with exactly the same score as Middlesex at the conclusion of the powerplay period.
Northants 40-2 (5.5 overs) v Middlesex 132-7
Image source, Getty ImagesJosh Cobb's fun is relatively short lived, however, as he tries one big shot too many and holes out to George Bailey off the bowling of Ryan Higgins.
Northants continue to assert their authority with a couple of fours straight down the ground from the bat of Josh Cobb, who moves to 11 from nine deliveries.
One over of the powerplay remaining.