Lou Gehrig and Lou Brock were two of the greatest baseball players of all time. Gehrig was a first baseman for the New York Yankees from 1923 to 1939, while Brock was an outfielder for the St. Louis Cardinals from 1961 to 1979. Both men are members of the Baseball Hall of Fame and are widely considered to be among the greatest players in the history of the sport. Lou Gehrig was nicknamed 'The Iron Horse' for his durability and longevity, while Lou Brock was known for his speed and base-stealing ability.