William McChesney Martin Jr. was named president of the New York Stock Exchange at 31. They called him the boy wonder. 

He went on to chair the Federal Reserve for nearly two decades, serving under five presidents. He was the longest-serving chairman in the institution's history. 

He was also, quietly, a devoted tennis player. A Yale graduate who competed in the U.S. Nationals at Forest Hills from 1932 to 1934, Martin never stopped playing. During his years at the Fed, he kept a court across the street from headquarters and used it regularly. 

His real contribution to the game came off the court. He served as President of the National Tennis Foundation and Chairman of the International Tennis Hall of Fame, where he oversaw the renovation and restoration of the historic Newport Casino. He became Honorary Chairman in 1992. 

Tennis brought him to Cynthia Davis, daughter of Dwight F. Davis, for whom the Davis Cup is named. They had three children together, William III, Diana, and Cynthia. 

(1992)