Worcs 114-5 v Essexpublished at 16 overs
Ross Whiteley joins Daryl Mitchell in the middle. Four overs left. Dan Lawrence will bowl out his allocation.
Essex beat Worcestershire by four wickets off final ball
Eagles win T20 Blast for first time in their history
Captain Harmer hits winning runs after taking 3-16
Essex beat Derbyshire by 34 runs in second semi-final
Worcestershire beat Notts by one run in first semi
Gary Smee
Ross Whiteley joins Daryl Mitchell in the middle. Four overs left. Dan Lawrence will bowl out his allocation.
Worcs 112-5 v Essex
Paul Newton
BBC Essex sport
He was on the line, but you've got to be over it.
The batsman walked off as soon as he saw the replay on the big screen.
Terrific breakthrough for Essex.
Worcs 112-5 v Essex
Oh my, a superb piece of fielding!
Riki Wessels and Daryl Mitchell try to rush through for a quick single, but Paul Walter throws down the stumps and Wessels is just - and I mean just - short of his ground.
Just a couple of balls before that Simon Harmer very nearly pulled off a worldie of a catch on the boundary, but could only palm Wessels' shot to cow corner over the rope.
Ravi Bopara's not quite as tight with his latest over as nine come from it, which is good news for Worcestershire.
Daryl Mitchell helps himself to a four midway through the over, which feels like the first boundary in a wee while.
Worcs 98-4 v Essex
Nick Gledhill
BBC Essex
I think a score of 150 is what Worcestershire will be hoping for.
Will the dew play a part to help Essex later on?
Daryl Mitchell cuts Aron Nijjar to the fence to get off the mark very nicely indeed - but the spinner comes back really well. Just three more runs come from the over.
What do Worcestershire settle for here? Even 150 feels a bit of a way off...
Worcs 91-4 v Essex
It's been an absolutely perfect day for cricket as the sun sets on Edgbaston...
If Essex go on to win the T20 Blast, a lot of it is probably going to be down to this four-over spell from their captain.
Simon Harmer ends with 3-16 from his four overs.
Daryl Mitchell is the new man in.
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Worcs 90-4 v Essex
Simon Harmer is borderline unplayable here.
After bowling an absolute snorter to Wayne Parnell, which somehow misses everything, he clean bowls him three deliveries later with another beauty.
Too good.
Worcs 89-3 v Essex
Tymal Mills
Sussex bowler on BBC Radio 5 Live Sports Extra
Simon Harmer has bowled brilliantly today, the conditions have definitely suited him but I think he's had a pretty poor tournament up until today in terms of his economy rate.
Worcs 89-3 v Essex
Ged Scott
BBC Sport at Edgbaston
Second time today Simon Harmer has bowled a hat-trick ball. And his removal of Moeen Ali and then Ben Cox - and his shout against Wayne Parnell - produced the three biggest roars of the final so far.
That shout against Parnell was certainly a lot closer to taking a wicket than his previous attempt against Matt Critchley.
The one common denominator in the two Harmer near-misses was the quality of the shots in the middle. Last year’s man of the match in the final Cox’s attempted sweep first ball was as bad and disrespectful a shot to the best spinner in the country as Anuj Dal’s walk down the wicket to him was for Derbyshire earlier.
It’s a fair bet Somerset will not be producing a wicket like this on which to face Harmer in next week’s title decider at Taunton.
Spin is the way forward for Essex, that's for sure. And that's the way the captain sees it, too, as Dan Lawrence continues into his third over.
Wayne Parnell and Riki Wessels manage to scamper two excellent twos with some fine running, but it's otherwise becoming a touch cagey again.
Parnell 14, Wessels 22
The pair in the middle can't get Simon Harmer away. It's another tight over from the Essex skipper.
#bbccricket
Adzo: Is there no DRS in the T20 Blast Final? Cox was never out there! Worcestershire robbed!
Nope.
That's a decent comeback at the end of the over from Aron Nijjar, however, limiting Wayne Parnell and Riki Wessels to just one more single between them.
Worcs 74-3 v Essex
Aron Nijjar is into the attack for Essex now - but Wayne Parnell is not messing about!
He first smacks the spinner for six, before claiming a boundary from the very next ball.
This is turning into an expensive over for the Eagles - and a very handy one for Worcestershire.
How about that from Simon Harmer?!
He may have been more than a touch fortunate with the dismissal of Ben Cox, mind you, as replays show he's got a big inside edge onto it before the ball struck his pad. Cox is really unlucky.
Worcs 61-3 v Essex
Wayne Parnell is the new man in for Worcestershire.
Here comes the hat-trick ball from Simon Harmer... but he survives, despite another big appeal for lbw!
Worcs 61-3 v Essex
Simon Harmer's on a hat-trick for the second time today!
He gets one to straight up just enough and Ben Cox, who made just one in the semi-final, is trapped in front to fall for a first-ball duck.
Worcs 61-2 v Essex
Paul Newton
BBC Essex sport
Fantastic diving catch and Simon Harmer's evening just got even better.
That's his fifth wicket of the day and the danger man goes.