Gregg Popovich, the San Antonio Spurs’ head coach for 29 years, is stepping down from his coaching role following a mild stroke last November but will continue as the team’s president. Assistant coach Mitch Johnson, who served as interim head coach during Popovich’s health issues, is set to take over permanently. Recognized as the winningest coach in NBA history with five championships and numerous accolades, Popovich received tributes from NBA stars and celebrities celebrating his legendary career.