Image source, Getty Images

Brought forward because of something happening in Atlanta, the four T20 Blast games have brought plenty of fun and drama.

James Vince's scintillating 125 for Hampshire, a last-over tug-of-war between Notts and Surrey where the Outlaws picked the visitors' pockets in the latter stages and a superb team performance from the Northamptonshire Steelbacks.

But we must end with Craig Overton.

Coming in at 59-7, Somerset were toast chasing 162 to beat Yorkshire.

Craig-O had other ideas with his incredible 79 off 30 balls seeing them home with a ball to spare.

If any England footballer produces similar heroics across the Atlantic, we all want to see it!

On that note, let's head off and reconvene on Saturday morning at Edgbaston!

So we now have our four teams heading to Edgbaston on Saturday...

• Semi-final one - Northants v Somerset
• Semi-final two - Hampshire v Notts Outlaws

Although they were cautious at times this was a well paced run chase by Northants who secured victory with more than two overs to spare.

David Willey finished the job off with a six followed by a two to finish 47 not out.

Gloucestershire did their best in defence of a total they must have known wasn't enough.

They were up against one of the most experienced and capable attacks in the Blast and couldn't build on an excellent innings from Ben Charlesworth who hit three sixes in a career best 68.

Their struggles in the second half of their innings was illustrated by Kamran Dhariwal's run out. Three Northants fielders had time to execute it between them.

The Steelbacks are through to their sixth Finals Day. They'll be chasing their third title and their first since 2016 but they'll hope Australian batter Chris Lynn is fit for Saturday. He had to retire hurt after being hit on the toe.

Anthony Gibson
BBC Radio Somerset

What an extraordinary victory for Somerset.

A quite remarkable match-winning innings from a Devonian giant of cricket in every sense.

Craig Overton's done some great things for Somerset cricket over the years but none I would venture greater than what he has achieved here this evening.

A quite remarkable innings to secure a quite remarkable win.

One of the most experienced players in the T20 Blast, David Willey appears to be ensuring Northants get home.

If Northants get to the final it'll be his 200th game in the competition. He's begun to accelerate as his team get close to their modest target.

Lewis McManus is helping, pulling the first six of the innings in the 17th over.

14 more needed in three overs with Willey unbeaten on 37.

Yorkshire had this game all but sewn up after 15 overs at 82-8.

Then came a record ninth-wicket partnership in the T20 Blast!

Riley Meredith contributing just six off nine balls of it.

Breathtaking stuff, words not doing it justice, hundreds of Yorkshire and Somerset fans had already left the ground to get home early, never leave live sport early is their message from today.

Notts take their place in Finals Day on Saturday after seeing off Surrey in a terrific quarter-final.

Jack Haynes' 75 not out was the bedrock of their 163-6, which was looking inadequate at 101-0 as Jason Roy and Laurie Evans were going strong.

But some tight bowling from George Linde and then a superb run out from sub fielder Freddie McCann to run out Roy turned the game.

From there, the new batters struggled as the run-rate climbed with Olly Stone finishing the job with an excellent last over, giving up only four runs from it.

Image source, Getty Images

A brilliant bowling display by Yorkshire, backed up by some good catching (check out the particularly special one from Dom Bess) looked like it was taking Yorkshire to Finals Day ahead of defending champions Somerset.

Adam Lyth top scored for the home side with 64 off 40 whilst noone else reached 20.

Most thought Somerset would chase this easily enough, but regular breakthroughs from the home seamers meant that Yorkshire's spin trio were not even needed.

But Craig Overton kept battling, and his incredible season continues, due to be a father later this year too, he adds a T20 50 to his stellar CV and arguably Somerset's greatest quarter-final win ever too.

Five sixes, eight fours, strike rate 263 for Overton.

Image source, Getty Images

Craig Overton does it!!

He gets the single needed to finish 79 not out off 30 balls.

Even better than Sean Dickson's knock against Warwickshire in the quarter-final last year!?

Somerset win by two wickets with a ball to spare.

They were 59-7!

Anthony Gibson
BBC Radio Somerset

This is unbelievable from Craig Overton!

Somerset are back from the dead.

The crowd are stunned into silence here at Headingley by one the greatest exhibitions of last-ditch batsmanship I think I have ever seen.

Quite extraordinary!

Sean Abbott runs one off the final ball as Olly Stone roars with delight!

Notts have done it. A superb effort with the ball after Surrey were 101-0.

Incredible fielding by Will Luxton at deep square leg, saves four, now the scores are tied!

They come back for two.

59-7 Somerset were after 12!

Highest score by a number nine in Blast historypublished at 19.3 overs

19.3 overs

Somerset 159-8 v Yorkshire 161-9

What an innings from Craig Overton!!

Another six!!

How on earth!?

Just how have Somerset now become favourites in this game!?

Highest score by a number nine in Blast history and Somerset need just three off the last three balls.

Josh Philippe clubs into the legside but that is only one out to Freddie McCann in the deep.

Great stuff from Olly Stone and it's nine off two balls needed.

A massive delay as they check the height of that for a no-ball, eventually it is not given, but then the next ball is a wide anyway!

Then Matt Revis' length ball is smashed high into the stands for six by Craig Overton.

Somerset now favourites?

They need nine off four balls.

Ollie Sykes pushes into the offside but that's only one.

The target is now 10 off three.