Incredible from Oisin O'Neill as he lands a two-pointer from way outside the arc.

Ross McQuillan shoots Armagh into the lead. Four minutes played.

Ruairi Canavan kicks Tyrone's and the game's first wide.

Oisin Conaty levels with the first Armagh attack.

Darragh Canavan fires over for Tyrone from the first attack.

Meath referee David Gough throws the ball in and it's Brian Kennedy and Andrew Murnin who contest the throw in.

Game on...

Matt Gault
BBC Sport NI in Clones

This place has filled up rightly.

It always looks well in the sunshine, too.

Image source, Inpho

Conor Gormley believes his county's chances of beating Armagh depend on the fitness of forward Darragh Canavan.

Canavan sat out the Red Hands' last-eight win against Cavan with a hamstring issue but he has been named in the Tyrone team.

"Darragh is going to be massive, if he is fit it's a whole new extra dimension to Tyrone," he told the GAA Social podcast.

"Do Armagh put a man marker on him? It gives them a bit more to think about."

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Image source, Inpho

Former Tyrone defender Conor Gormley says the 2005 All-Ireland semi-final victory over Armagh was the "most intense game" he ever played in.

Peter Canavan converted a last-gasp free to give the Red Hands a dramatic 1-13 to 1-12 win against their great rivals at Croke Park.

Tyrone went on to win the Sam Maguire that year and Gormley believes the semi-final was the most ferocious encounter during the peak years of their rivalry when they met six times in the championship between 2002 and 2005.

"It is hard to describe. Nearly every step you took was so important and then when you got the ball, every pass mattered that day - everything mattered," three-time All-Ireland winner Gormley told the GAA Social podcast.

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Matt Gault
BBC Sport NI in Clones

Image source, Getty Images

Conor Turbitt's absence is a big blow for Armagh. With Rian O'Neill also still missing, that's a serious amount of scoring power to be shorn of.

Aidan Forker didn't start against Antrim and hasn't regained his fitness in time for this afternoon, but Tyrone's Darragh Canavan has.

Canavan missed the comfortable win over Cavan but he's seemingly good to go now - he seemed to be walking around with ease when the Tyrone lads were giving the pitch a look earlier.

He will have his brother Ruairi alongside him in the full-forward line. It could be Barry McCambridge picking up Darragh Canavan, a tasty enough match-up that one.

It's a big day for Ruairi. He doesn't have too many championship starts under his belt but this would be as good a day as any to produce a star turn.

Image source, BBC Sport

Not that the Ulster Championship has been bad this year - far from it, in fact - but Saturday's semi-final between Armagh and Tyrone is probably the first game that really gets you out of your seat.

Last weekend's quarter-finals had plenty of entertainment value. Down's win over Fermanagh at Brewster Park was a great spectacle and Monaghan gave Donegal a scare in the second half at Clones, but a first Tyrone and Armagh game in the Ulster Championship since 2012 will attract serious interest all over the country.

Armagh and Tyrone have played out some of the most memorable championship games in my lifetime, and with the chance of making the Ulster final on the line, this weekend should be no different.

There should be a huge crowd in Clones, too, so it has all the makings of an Ulster Championship classic.

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Matt Gault
BBC Sport NI in Clones

Image source, Getty Images

It never ceases to amaze when you come to a place like Clones how a town can become overrun with the one colour.

In this case it's Armagh. Is it never not Armagh? It doesn't matter where they're playing, they always bring huge numbers with them and it's no different today.

Taking a wee stroll into the town earlier, all I could see was orange. A few hundred of them had even taken their seats in here well before 15:00.

Don't get me wrong. There's a serious Tyrone contingent knocking about too, but it's hard not to be amazed by the support for the All-Ireland champions.

Armagh have made three changes to the team named on Thursday night with captain Aidan Forker, Connaire Mackin and all-star forward Conor Turbitt dropping to the bench.

Replacing that experienced trio is Oisin O'Neill who kicked six points off the bench against Antrim, Darragh McMullen coming in at wing-forward with Ben Crealey boosting the Orchard County around the middle.

Tyrone have also made three changes to the team named yesterday but the big news is that Darragh Canavan is fit and will start at corner-forward.

Cormac Quinn replaces Aidan Clarke at right corner-back with the experienced duo of Mattie Donnelly and Peter Harte dropping out with Joe Oguz and Ruairi Canavan coming into the forwards.

Armagh: E Rafferty; P Burns, B McCambridge, T McCormack; R McQuillan, G McCabe, J Og Burns; C O'Neill, B Crealey; D McMullen, O Conaty, P McGrane; R Grugan, A Murnin, O O'Neill.

Subs: B Hughes, S McPartlan, C Turbitt, J Hall, T Kelly, C McConville, A Forker (capt), N Grimley, Connaire Macken, G Murphy, S Campbell.

Tyrone: N Morgan; C Quinn, P Teague, N Devlin; M McKernan, R Brennan, K McGeary; B Kennedy, C Kilpatrick; A Donaghy, J Oguz, C Daly; D McCurry, R Canavan, D Canavan.

Subs: O O'Kane, A Clarke, P Hampsey, F Burns, B McDonnell, S O'Hare, M Donnelly, M Bradley, S O'Donnell, P Harte, E McElholm.

Image source, Inpho

While some GAA pundits deride the provincial championships, don't try and tell anybody assembled at Clones today that the opening Ulster Football semi-final between All-Ireland champions Armagh and Tyrone doesn't really matter.

OK.....both sides are already certain of a place in the group stages of the All-Ireland Championship which starts next month but the sight of the old enemy will surely stir both sets of players this afternoon.

Armagh may have clinched Sam last July but the Orchard County have not lifted the Anglo-Celt Cup since 2008.

Tyrone's last Ulster title came in the midst of the Covid-19 pandemic four years ago when they went on to secure the All-Ireland title in a campaign that had to revert to old fashioned straight knockout because of the global health emergency.

In the build-up to today's game, inevitably memories have wandered back to the epic rivalry the two counties had in the noughties as the Red Hands ended Armagh's hopes of successive All-Ireland titles by beating Joe Kernan's side in the 2003 Sam Maguire Cup decider at Croke Park.

And it didn't end there as Armagh defeated Tyrone after a replay in the 2005 Ulster Final replay at Croke Park before the Red Hands earned revenge at headquarters by earning a one-point All-Ireland semi-final victory before going on to beat Kerry in the decider.

Hold on to your hats folks and enjoy every twist and turn with us.