Marvin Miller was a prominent labor leader and the executive director of the Major League Baseball Players Association (MLBPA) from 1966 to 1982. He played a crucial role in transforming the landscape of professional baseball by advocating for players' rights and better working conditions. Under his leadership, the MLBPA achieved significant milestones, including the introduction of free agency. Miller was born on April 14, 1917, in New York City and later attended the City College of New York. He was known for his strategic negotiation skills and commitment to improving players' salaries and benefits. His efforts laid the foundation for modern labor relations in sports.