Our Coaches
Sean King
Johnny O'Shea
Born and raised in Concord, Sean King enters his sixth season as head coach of the Concord High School wrestling program for 2026–27. Originally planning to coach for just a single season, King discovered a deep passion for mentorship that keeps him on the mat today.
Johnny O'Shea
Johnny O'Shea
Concord High alumnus Johnny O’Shea (’16) enters his fourth year of coaching coming off a historic 2025–26 season, where he led the girls' wrestling team to an undefeated NCS championship. A Navy medic veteran currently pursuing medical school, Coach O’Shea leverages his deep connection to his alma mater to build great wrestlers and exceptional leaders in the Concord community.
Marcus Collins
Marcus Collins
Concord High alumnus Marcus Collins (’06) enters his first year on the coaching staff, returning to his alma mater to help build upon the program's strong momentum. Coach Collins is excited to leverage his deep connection to the school to help drive Concord toward future league championships.