Career
He plays for Newcastle Falcons. His usual position is at tighthead property Formerly of Leeds Tykes, he played for England under-19s and Under 21s.
From Leeds, he signed for Doncaster Knights at the end of the 2007/08 season.
Cusack moved to Glasgow Warriors in the summer of 2011. After being resident in Scotland for over three years he was now become eligible for Scotland internationally.
He was called up as part of Scotland"s extended training squad for the 2015 Rugby World Cup by head coach Vern Cotter on 2 June 2015
Named on the bench for the Ireland versus Scotland match he replaced Jon Welsh at 46 minutes to earn his first full Scotland cap and thus confirm his Scottish nationality He then made his first start for Scotland against Italy in Turin on the 22 August 2015. After 48 matches for the Warriors spanning five seasons, Cusack signed for Newcastle Falcons on 1 March 2016.