Albertín Aroldis Chapman de la Cruz is a Cuban-born American professional baseball relief pitcher for the Boston Red Sox of Major League Baseball (MLB). He has previously played in MLB for the Cincinnati Reds, New York Yankees, Chicago Cubs, Kansas City Royals, Texas Rangers, and Pittsburgh Pirates and in the Cuban National Series for Holguín. Chapman bats and throws left-handed, and is nicknamed "the Cuban Missile", due to his high fastball velocity. A member of the 300 save club, Chapman is the all-time career leader in strikeouts for relievers.