He plays Gaelic football for his club St John's and at senior level for the Sligo county team.
Harrison made his senior inter-county debut in 2004 playing for London while he was a student at St Mary's College Strawberry Hill.
[1] In October 2010, Harrison was named in the 2010 All Stars football team as a result of his performances for Sligo during the 2010 season.
[2] He joined Michael Kearins (1971), Barnes Murphy (1974) and Eamon O'Hara (2002) on the list of Sligo footballers to have won All Star awards.
I'm absolutely delighted, The All-Star is a really coveted award, but you never really think you will be up there someday, so to win one is an amazing feeling.