Career
Born in Adrigole, County Cork, O'Sullivan first excelled at Gaelic football in his youth. He arrived on the inter-county scene at the age of twenty when he first linked up with the Cork under-21 team He made his senior debut during the 1968-1969 league.
Throughout his career O'Sullivan made 16 championship appearances.
He retired from inter-county football following the conclusion of the 1975 championship.