Tyrone have been showing a real patience so far, waiting for the gaps to appear.

Niall Devlin comes forward to knock the game's first point over the bar.

Gearoid McKiernan thinks he's levelled things and looks bemused that his free is judged to have drifted wide.

Image source, Getty Images

And we're off at Healy Park.

Cavan on the ball to start...

Owen Mulligan
Former Tyrone forward and All-Ireland winner on BBC Sport

Cavan play man for man and Tyrone go zonal. They will try and pull Cavan into a counter attack and it will be about how they can plug those gaps.

It's been summer sunshine in the Ulster championship so far...but there's dark clouds over Healy Park this afternoon.

Let's hope it's not a sign of things to come.

We're just about ready to get under way!

Well, Darragh Canavan's absence is certainly the big news but there are other changes to the panels named yesterday.

Mattie Donnelly doesn't start either with Cathal McShane coming in for the start. Ruairi Canavan also starts for the Red Hands.

Donnelly drops to the bench where he's joined by Liam Gray who will wear the 15 jersey that was to be occupied by Darragh Canavan.

For Cavan, Killian Clarke replaces James Smith and Cian Madden is in for Cormac O'Reilly.

Tyrone: N Morgan; A Clarke, P Teague, N Devlin; M McKernan, R Brennan, K McGeary; B Kennedy (capt), C Kilpatrick; A Donaghy, C McShane, C Daly; D McCurry, P Harte, R Canavan.

Cavan: G O'Rourke; C Reilly, B O'Connell, J McLoughlin; P Faulkner (joint-capt), C Brady (joint-capt), N Carolan; K Clarke, G Smith; G McKiernan, O Kiernan, D McVeety; B Donnelly, C Madden, S McEvoy.

Image source, BBC Sport

BBC iPlayer

You can watch today's game live on BBC Two NI, BBC iPlayer and here with us on the BBC Sport website - live coverage is starting right...about...now.

We'll have text updates and in-play clips on this page too.

There will be a new episode of The GAA Social available later this evening, but in the meantime why not catch up with the latest episode on BBC Sounds

Thomas Niblock and Oisin McConville catch up with Armagh legend Ger Houlahan.

Give it a listen here

Image source, BBC Sport

After all the debate over Corrigan Park as the host venue, Antrim gave Armagh something of a rude welcome to west Belfast.

The Saffrons gave the All-Ireland champions a real scare in the first of the Ulster SFC quarter-finals and led 0-14 to 0-13 at half-time.

Kieran McGeeney's side proved too strong in the end, though, eventually running out 1-34 to 1-23 winners.

If you missed the action, you can read my colleague John Haughey's report here and watch the highlights below.

Full team news to follow but the headline in Omagh is that Darragh Canavan will be missing for Tyrone!

Just how big a loss could that be?!?

Image source, Inpho

All-Ireland champions Armagh have already booked their place in the Ulster SFC semi-finals thanks to yesterday's victory over Antrim at Corrigan Park and it's time to find out whether they'll face Tyrone or Cavan.

Throw-in is set for 16:15 BST at Healy Park with this quarter-final bringing together two sides who endured frustrating, if contrasting, Allianz League campaigns.

Malachy O'Rourke's side won three of their seven games in Division One, yet were relegated in spite of finishing strongly with a 2-20 to 1-16 win over Dublin.

They were almost replaced in the top tier by today's opponents.

Cavan struggled early but four straight wins had them on the cusp of promotion from Division Two only to miss out thanks to a narrow defeat by Cork on the final day.

The Red Hands beat Raymond Galligan's side after extra-time at the same stage of the Ulster SFC last season - will history repeat itself this afternoon?

Stick with us to find out!

Image source, Getty Images and Inpho