Born in Cleveland, Ohio, Coolican grew up in Sydney, Australia, where he began playing rugby at an early age with the Lindfield Rugby Club. Educated at St Ignatius College Riverview, he went on to earn First XV honors and went on to represent New South Wales at Schoolboy Level. After completing high school, he went on to play for Sydney University 1st Colts and Eastern Suburbs 1st Grade where he was selected for the Australian Universities XV. He was also involved with the NSW Waratahs where he earned two caps for the Waratah's 'A' side against Tonga 'A' and Samoa 'A' in 2012. After completing law school, Coolican moved to New York to study a Masters of Sports Law at the St John's School of Law whilst simultaneously playing for New York Athletic Club.
|Born||August 28, 1988|
|High School||St Ignatius College Riverview (AUS)|
|Club||Sydney Stars (AUS)|