RTÉ has once again produced a superb primer for an All-Ireland decider.
Mayo and Dublin step onto the Croke Park turf today both looking to create a bit of history.
Mayo - as with same many teams from the county before - are hoping to end a lengthy title famine which now stretches to 66 years.
A victory for Dublin would move them into three-in-a-row territory, they would be the first team to do so since Mick O'Dwyer's Kerry team of the late 80s.
The promo hails the greatest of both sides. For Mayo, greatness is 'refusing to quit, to keep coming back again and against and again.'
This Dublin side's greatness is built on 'being relentless, to keep striving for greatness.'
What is Greatness? Come 3:30pm on Sunday, September 17th, Dublin and Mayo will have the chance to grasp it. So who will take their chance? pic.twitter.com/cPjA1myzmr
— RTÉ Sport (@RTEsport) September 16, 2017