Robert Larimore Riggs was an American tennis champion who was the World No. 1 or the World co-No. 1 player for three years, first as an amateur in 1939, then as a professional in 1946 and 1947. He played his first professional tennis match on December 26, 1941. He was the first person to play against Billie Jean King.
He made a cameo in an episode called I Am Billie Jean King.