The term 'Diamond Great' is a term used to refer to four of the greatest baseball players of all time: RUTH, Ott, COBB, and Mays. RUTH was a legendary New York Yankees player whose real name was George Herman RUTH Jr., and he was known for his powerful hitting. Ott was a Hall of Fame first baseman for the New York Giants, and he was known for his power hitting and defensive skills. COBB was an outfielder for the Detroit Tigers, and he was known for his speed and batting average. Mays was an outfielder for the San Francisco Giants, and he was known for his power hitting and defensive skills. All four of these players are considered to be some of the greatest baseball players of all time, and they are collectively referred to as the Diamond Greats.