Chris Og Jones tears through the Mayo back-line and fists over to give Cork a two-point lead.

Stephen Coen came flying towards Jones as he played the ball and was issued a yellow card for a late challenge.

Ryan Maguire has just ballooned another effort wide for Cork.

That's their eighth of the first half while Ryan O'Donoghue had an opening for Mayo at the other end, but was well contained and blocked by Ian Maguire.

Three minutes to the hooter.

Image source, Getty Images

Odhran Crumley
BBC Sport NI at Croke Park

Poetry in motion.

Kobe McDonald's two-pointer with the outside of his right boot was worthy the entry fee alone.

He looked like a carbon-copy of his father as he struck that ball, one I'm sure was practised in the back garden over and over again.

Image source, Inpho

Steven Sherlock nails a second 45 of the afternoon to put Cork back in front.

Well, he's been a passenger since that opening score of the game, but Kobe McDonald has just struck a sweet two-pointer.

Ryan O'Donoghue races at the Cork defence and pops over his shot to bring the sides level.

Cork have dominated for most of the first half but the sides are level on the scoreboard with 27 minutes gone.

Paul Walsh sells the dummy, keeps his composure and opens up a three-point gap for Cork.

From the resulting kick out, the Rebels turn the ball over, but Tommy Walsh fails to capitalise as he fires wide.

Image source, Getty Images

Odhran Crumley
BBC Sport NI at Croke Park

The wind in Croke Park is often swirling, anyone who has played here will tell you that, due to the stadium’s unique design, it can be difficult to read and unlike any other venue.

All five of Cork’s early wides have drifted left of the post, possibly a consequence of Croker’s notorious micro-climate.

Darragh Beirne kicks another timely point for Mayo this time off his right foot. Just their second in 19 minutes.

Steven Sherlock instantly responds for Cork as he hooks one over from an acute angle to restore Cork's two-point advantage with 22 minutes gone.

Cork are having joy around midfield and captain Ian Maguire surges forward to finish off another Rebel attack that ends in a point to open up a two-point gap.

Mayo are living off scraps at the moment. The ball pops up to Jack Carney from outside the arc, but he strikes wide.

Image source, Inpho

Chance here for Mark Cronin with a two-point free and he swings it over superbly to put the Rebel County in front.

Darragh Beirne kicks Mayo's first score in over 10 minutes to put the Connacht side back in front.

There is a wind blowing into the far corner from right to left down at the Canal end, and it has caught both Dara Sheedy and Brian O'Driscoll out already for Cork.

Image source, Getty Images

Odhran Crumley
BBC Sport NI at Croke Park

The Mayo support are incensed, Ryan O'Donoghue looks to be through on goal before falling to the ground under the pressure of a Cork defender.

Referee Martin McNally sees nothing wrong with it, and tells him to get up, Mayo fans are here in huge numbers going by the boos!

It did look like a penalty from high in the Hogan Stand.

Image source, Getty Images

Mayo haven't been able to create much since that bright start and Colm O'Callaghan has judged the cross-field wind brilliantly to bring Cork level.

At the other end, Mayo appeal for a penalty after Ryan O'Donoghue goes down under a challenge from Maurice Shanley, but the referee wasn't having it.

Image source, Getty Images

Ian Maguire splits the Mayo defence and picks out Chris Og Jones. He has only goal on his mind, but Jack Livingstone gets down smartly to deny the Rebels a major.

Steven Sherlock drags his 45 wide to the left down at the Canal end.

Steven Sherlock has hit 0-36 in the championship to date, half of that tally from outside the arc, and he's on the scoresheet again with a 45 to get Cork on the board inside four minutes.

Lively start here from the Westerners with Kobe McDonald - on his first Croke Park appearance - opening the scoring and it is swiftly followed by a Ryan O'Donoghue point.

Image source, Getty Images

The first of four All-Ireland quarter-finals is under way in Croke Park.

Odhran Crumley
BBC Sport NI at Croke Park

Both Cork and Mayo will sense a genuine opportunity not only to book their place in the last four, but to take a significant step towards lifting the Sam Maguire Cup in just under four weeks' time.

John Cleary's Cork are aiming to reach an All-Ireland semi-final for the first time since 2012. They've become the championship's two-point specialists this summer, hitting six in their stunning victory over Donegal in Ballybofey a fortnight ago.

Mayo's form has fluctuated throughout the campaign, but despite their consistency at the top level over the past decade, it's remarkable that they endured a three-year wait to return to Croke Park in the championship.

Cork will look to Steven Sherlock, Chris Og Jones and the returning Colm O'Callaghan, while Mayo have three aces in their pack; Ryan O'Donoghue with the young duo of Darragh Beirne and Kobe McDonald either side of him.

Cork manager John Cleary has made two changes to the side that defeated Donegal in Round 2A a fortnight ago, as the returning Colm O’Callaghan comes into midfield in place of Sean Walsh.

At half-back, Luke Fahy is out of the matchday squad entirely and is replaced by Rory Maguire, with Darragh Clifford now among the substitutes.

The Rebels haven’t made it to the All-Ireland semi-finals since 2012 and will lean upon their two-point prowess to pick up their first victory at Croke Park in 13 years.

Steven Sherlock has landed eight scores from beyond the arc across Cork’s last two games, while half-backs Tommy Walsh and Luke Fahy also struck from outside the paint as the Munster side recorded a famous win in Ballybofey.

As for Mayo, Andy Moran has been forced to make one alteration to the XV that defeated Meath in Round 3.

Paddy Durcan was withdrawn in the first half as the Westerners went on to win 0-22 to 2-13.

Stephen Coen comes into the team while Bob Tuohy moves to midfield and Jordan Flynn to wing-half forward.

In a late change, Conor Loftus is replaced by Paul Towey.

Kobe McDonald makes his Croke Park bow in what is Mayo’s first quarter-final appearance in three seasons.

Cork: Patrick Doyle; Maurice Shanley, Daniel O’Mahony, Seanie Meehan; Brian O’Driscoll, Tommy Walsh, Rory Maguire; Ian Maguire, Colm O’Callaghan; Paul Walsh, Sean McDonnell, Dara Sheedy; Mark Cronin, Chris Og Jones, Steven Sherlock.

Subs: Micheal Aodh Martin, Jacob O’Driscoll, Sean Brady, Darragh Clifford, Sean Walsh, David Buckley, Conor Cahalane, Eoghan McSweeney, Ruairi Deane, Conor Corbett, Brian Hurley.

Mayo: Jack Livingstone; Jack Coyne, Donnacha McHugh, Eoin McGreal; Sam Callinan, David McBrien, Enda Hession; Bob Tuohy, Jack Carney; Stephen Coen, Paul Towey, Jordan Flynn; Darragh Beirne, Ryan O’Donoghue, Kobe McDonald.

Subs: Rob Hennelly, Diarmuid Duffy, John MacMonagle, Rory Brickenden, Conal Dawson, Aidan O’Shea, Matthew Ruane, Conor Loftus, Fergal Boland, Tommy Conroy, Cian McHale.

Image source, BBC Sport

A reminder of the quarter-final action this weekend.

Saturday, 27 June

Cork v Mayo - 16:00 BST, Croke Park

Kerry v Tyrone - 18:15 BST, Croke Park

Sunday, 28 June

Louth v Monaghan - 13:45 BST, Croke Park

Dublin v Galway - 16:00 BST, Croke Park