And Darren McCurry immediately responds. As you were.

This is a good spell for Cavan and they're rewarded.

Cian Madden gives a shimmy, a spin and lands the opening score of the game.

Mattie Donnelly with a stunning block!

Cavan counter quickly and look to be bearing down on goal, but the experienced Donnelly throws himself in front of Ciaran Brady as he shoots and Tyrone survive.

Huge moment early on.

Tyrone are getting comfortable on the ball in the early stages with Cavan dropping very, very deep.

However, one slip up and Padrag Faulkner is right there to pick up on the scraps.

Off we go!

Who will set up a semi-final date with Donegal? Time will tell.

Orla Bannon
BBC Sport NI at Breffni Park

Cavan break from the parade early and run through the Tyrone players - similar to Down against Antrim last week in Newry.

However apart from Michael McKernan's slight shove of one of the Cavan players, Tyrone don't react and keep walking.

Oisin McConville
Armagh All-Ireland winner on BBC Sport

We have one change to both programme teams.

Luke Fortune replaces Cavan midfielder James Smith with Trillick's Liam Gray added to Tyrone's list of championship debutants as he comes in for Joe Oguz in the Red Hands' attack.

Other Tyrone championship newcomers are corner-back Conal Devlin, midfielder Aodhan Donaghy and wing-forward Ciaran Daly.

But Tyrone have plenty of old 'red' hands with 2021 All-Ireland heroes Niall Morgan, Padraig Hampsey, Michael McKernan, Matthew Donnelly, Brian Kennedy, Kieran McGeary, Darren McCurry and Darragh Canavan all starting.

Cavan's side is not short of experience with all their starters having played championship football.

Cavan: G O'Rourke; C Reilly, K Brady, B O'Connell; P Faulkner, N Carolan, Conor Brady; L Fortune, Oisin Kiernan; Ciaran Brady, G Smith, O Kiernan; C Madden, P Lynch, O Brady.

Subs: F O'Rourke, M Magee, J Smith, C Rehill, J McLoughlin, T Noack Hofmann, R Donoghue, K Clarke, T Madden, Cormac O'Reilly, Caoimhin O'Reilly.

Tyrone: N Morgan; C Devlin, P Hampsey, M McKernan; S O'Donnell, M Donnelly, N Devlin; B Kennedy, A Donaghy; C Daly, K McGeary, L Gray; D McCurry, D Canavan, R Canavan

Subs: L Quinn, A Clarke, B Cullen, C Cush, C Donnelly, J Oguz, N McCarron, L McGarrity, C McShane, M O'Neill, T Quinn.

Orla Bannon
BBC Sport NI at Breffni Park

After the drama of Celtic Park last night, it's hard to see how events in Kingspan Breffni Park today could match the quality and excitement of Donegal's masterful display against Derry. The sun is splitting the stones here in Cavan and after training and playing in the rain for months and months, both sets of players must be looking forward to a dry ball and the sod here in Breffni looks excellent. There is a slight breeze blowing from the town goals down the pitch as both teams go through their warm-up routines.

The final touches at Breffni Park.

Image source, Getty Images

The atmosphere is building in Cavan as the players do their final preparations on the pitch.

Not long until we get under way.

Philly McMahon
Eight-time All-Ireland winner with Dublin on BBC Sport

Tyrone joint-manager Brian Dooher picked out Darragh Canavan for praise as the Red Hands prepared for Sunday's Ulster SFC quarter-final against Cavan.

The Errigal Ciaran forward impressed as Tyrone maintained their Division One status and will now hope to take that form into the Breffni Park game.

"Darragh had a phenomenal league campaign and was pivotal to the wins that we got," said Dooher.

"It's not only his attacking play - his work rate is an example to everyone."

Image source, Inpho

BBC iPlayer

We've got you covered for today's fourth and final quarter, with live coverage on BBC Two NI and BBC iPlayer from 15:45 BST.

Mark Sidebottom is on presenting duty at Breffni Park and is joined by the familiar faces of Michael Murphy and Oisin McConville.

Thomas Niblock is on commentary alongside former Dublin star Philly McMahon.

Missed the drama yesterday? Catch the best of the action here.

Matt Gault
BBC Sport NI

On Saturday evening, as Celtic Park bathed in sunshine and became awash with red and white and green and gold in the minutes before throw-in, it was difficult not to feel like we were about to be truly captivated by the Ulster Championship for the first time this year.

Thankfully it wasn't a false dawn.

Derry, viewed by many as strong All-Ireland contenders, were chasing the win that would set them on the road to three-in-a-row.

As Division One champions, Mickey Harte's men came to Celtic Park as deserved favourites.

And while losing here won't alter the general consensus that the Oak Leafers can go all the way this year, Jim McGuinness and Donegal have well and truly entered the conversation.

"I'm very, very happy," McGuinness told BBC Sport NI.

"Their application was great, the work-rate was great, tactically they nailed everything really.

"They were tuned in to what we were trying to achieve and thankfully it worked out for us."

Read more here.

It's time for the fourth and final Ulster Championship quarter-final.

Will Cavan or Tyrone earn a place in the last four to join Donegal, Down and Armagh?

The hosts have already produced an upset to get to this point. Cavan, who finished third in Division Two, scored two injury-time goals to edge past derby rivals Monaghan 3-12 to 1-12 at Clones.

It's fair to say Tyrone have room for improvement after their league campaign, which ended in a heavy defeat by Dublin.

They will be out to make sure they are not on the receiving end of a shock this afternoon.

The winner will earn a trip to Jim McGuinness' Donegal, which should be tasty no matter who progresses today.