Adam Williams
BBC Sport at Twickenham

Absolutely nothing was going Saracens' way in the early exchanges.

Exeter came out and looked after the ball at every opportunity.

Half chances to get a foothold for Saracens were going begging either with a knock-on or with some sloppy discipline at the breakdown.

But, crucially above anything else, they're somehow ahead on the scoreboard.

Penalty given to Exeter at the lineout but Henry Slade's kick doesn't find touch - sloppy.

Meanwhile Sarries are enjoying their first real spell of pressure... Alex Goode makes great progress and they're closing in on the Exeter try-line.

Image source, .

You don't need to be a rugby nut to know Olly Woodburn's numbers for this season are off the scale.

He is second on the list of most carries, metres gained and clean breaks in the 2017-18 Premiership.

The Exeter wing has been fairly quiet thus far but is sure to be a key cog for his club this afternoon.

Matt Dawson
Former Lions and England scrum-half on BBC Radio 5 live

We're in for a fascinating game.

The styles of these two sides really can cancel each other out.

Exeter can squeeze the life out of an opposition and I'm just going to go with them.

Another penalty conceded by Sarries, this time for entering at the side of a ruck.

There's a deathly silence as Joe Simmonds attempts to kick from range, but this effort floats well wide of the posts.

It's as you were...

Sarries give away a penalty at the ruck as Exeter's incessant early pressure pays off.

Joe Simmonds, starting at fly-half over Gareth Steenson, slots the simple penalty.

That'll settle the 21-year-old's nerves.

Chiefs are keeping possession and going through the phases as they so often do.

However Saracens won't fall apart as easily as most of their opponents.

Mark McCall's side are making some heavy-duty tackles to set the tone.

The first error is a Saracens one.

Sean Maitlands goes to collect a high ball but knocks on.

Exeter put in the scrum...

Image source, BBC Sport

There are a number of high-profile farewells playing out on the pitch this afternoon, and in the commentary box we have another.

Today marks the final time that legendary rugby union commentator Ian Robertson will call a Premiership final!

He has provided the soundtrack to a multitude of iconic moments in the history of the game and has been with the BBC for 46 years.

But don't despair just yet, the former Scotland fly-half, 73, will call time on his broadcasting career after the 2018 autumn internationals.

You can, of course, listen in to Robertson's commentary for BBC 5 live - or other calls from BBC Radio London or BBC Radio Devon - by clicking on the audio tabs at the top of the page.

Image source, Getty Images

Eddie Jones has his arms crossed in the crowd, which must mean it's kick-off time.

Owen Farrell gets this final under way for Saracens, who are in white, while Exeter are in their black strip.

Here they come...

You have to love all the razzmatazz of a Premiership final - fire flames, gigantic flags and funky camera angles for those watching at home.

But once the whistle blows it'll still be 15 against 15 on the field.

Image source, Getty Images

Let's cut to the chase...

Who will win this afternoon's Premiership final? How close will it be? Who will be the key players?

Use #bbcrugby on social media and we'll use as many of your predictions as we can.

There are drinks flowing in the crowd, which can be excused at the start of this Bank Holiday weekend.

Chants can be heard ringing out across Twickenham, including the famous Tomahawk Chop from the Chiefs faithful.

The players will be out any moment now...

Adam Williams
BBC Sport at Twickenham

It's certainly a belter of a day with the sunshine out here at Twickenham, but there's also a very noticeable breeze whirling around up in the stands .

Whether or not that proves a factor for both these sides with their relentless running games we will see, but could prove tricky for both box and penalty kicking as the match develops.

Image source, PA/Getty Images

There's a tasty looking match-up between the two number eights on show this afternoon.

Sam Simmonds has been a revelation in the back row for Exeter this season with 12 tries in his 16 appearances, including a hat-trick against London Irish last month.

Billy Vunipola meanwhile has experienced another injury-disrupted campaign for Saracens, but in the time he has got on the field, his impact has been impressive.

Which of the two back rows will be celebrating a match-winning contribution come full-time?

Chris Jones
BBC rugby union commentator at Twickenham

Image source, Getty Images

The Premiership final always sees plenty of “neutral” fans flock to Twickenham, having booked their tickets well in advance more in hope than expectation.

I’ve seen supporters from Bath, Leicester, Gloucester and perhaps most optimistically, Harlequins and Northampton.

Image source, Getty Images/Rex Features

Sam and Joe Simmonds. Billy and Mako Vunipola.

Remarkably this is the the third final in seven years to feature two sets of brothers - the Vunipolas did it in 2015 for Saracens, but for Exeter's duo it is a first.

Disappointingly, Sam and Jonny Hill - both in Exeter's starting XV - are not related.

The Simmonds brothers will be the eighth pair of siblings to line up together in a Premiership final, but which family will have something to celebrate this evening?

Saracens scrum-half Richard Wigglesworth knows a thing or two about playing (and winning) in Premiership finals.

But, the 34-year-old isn't allowing himself to get carried away with the possibilty of making history and winning for a fifth time at Twickenham....