Michael Murphy says Donegal have to step up their performance for the Dubs

Michael Murphy 0814Donegal and Dublin renew their rivalry on Sunday in the All Ireland Ireland semi final at Croke Park.

The Dubs are hotly tipped as favourites for the game and Donegal are seen as rank outsiders by the bookies.

Games don't come much bigger than the last two All Ireland Champions  battling for a place in the decider on the third weekend in September.

Dublin cruised to the semi's against Monaghan while Donegal made hard work of their win over Armagh in the closing stages.

Captain Michael Murphy knows that Donegal will have to step up their performance for the Dubs.