Dublin must prove they can shut door on Tyrone

FOR all the talk about systems and tactics, there is one very simple task that Dublin must tackle on Saturday — defend.

The problem for Dublin, however, is that when they have made a step up in class in the championship it is a basic principle that they have struggled to master.

Since their re-emergence as championship contenders in 2005, the team have been undone by an inability to limit their opponents when it has come to the crunch.