Mike Krzyzewski, often referred to as "Coach K," is a retired American basketball coach known for his successful tenure at Duke University. He led the Duke Blue Devils men's basketball team from 1980 to 2021, becoming one of the most celebrated coaches in college basketball history. Under his leadership, the team won five NCAA Championships and made numerous tournament appearances. Krzyzewski is also recognized for his contributions to the USA Basketball program, coaching the national team to multiple Olympic gold medals. His coaching style emphasizes teamwork, discipline, and player development.