Charles Dillon "Casey" Stengel was an American Major League Baseball right fielder and manager, best known as the manager of the championship New York Yankees of the 1950s and later, the expansion New York Mets. Nicknamed "the Ol' Perfessor", he was elected to the Baseball Hall of Fame in 1966.

In baseball, the field manager is the equivalent of a head coach who is responsible for overseeing and making final decisions on all aspects of on-field team strategy, lineup selection, training and instruction. Managers are typically assisted by a staff of assistant coaches whose responsibilities are specialized. Field managers are typically not involved in off-field personnel decisions or long-term club planning, responsibilities that are instead held by a team's general manager.