Donegal supporters are on their way to the capital this morning hoping their team can produce a major upset against reigning All Ireland champions Dublin.
Thousands of Donegal fans will help fill Croke Park later today as GAA headquarters plays host to the final two quarter finals.
Tyrone meet Mayo at 4pm and Donegal's game against Dublin will throw-in at 6pm.
For the second Saturday in a row, Donegal supporters will be out in force in Dublin. Many have been on the road since this morning and they travel knowing their team will need a big performance if they are to dethrone the Dubs.
It'll be the sixth championship meeting of these teams with eaching having won twice and the other game ending in a draw.
And Donegal fans would take a repeat result of the 2014 meeting when Donegal famously won the semi-final meeting by six points.