Éamonn Fitzmaurice: Big switches and small margins as heavyweights go through the gears

If Kerry are to unseat the All-Ireland champions in Croke Park, they will have to make Armagh uncomfortable. Push out, get in their faces. Play with the anger that has to be in their bellies

REMATCH: Diarmuid O'Connor catches a kickout during the Allianz Football League Division 1 match between Kerry and Armagh at Austin Stack Park in Tralee. Pic: Brendan Moran/Sportsfile.

Since its inception, the All-Ireland quarter final weekend has always put shape on the football championship. 

The genuine contenders start to move away from the pack. Don’t be surprised if we need extra time and penalties to decide at least one of the weekend's contests so evenly matched are the teams this time around.