The Boston Cannons have a strong defensive Arrow on their roster. Patrick Healy '13 is the first St. Sebastian's alumnus to play lacrosse professionally. As an Arrow, Healy played on the varsity lacrosse team for four seasons and as a senior was ranked as the number one player in Massachusetts by BostonLax. He was awarded All-American and All-ISL honors as well. Healy went on to play at the University of Notre Dame and started in all fifteen games as a senior.
Healy scrimmaged against Michael Calabro '16 and Jack Frisoli '17 when the Cannons faced off against Harvard's team.