In what county were The 1981 U.S. Clay Court Championships held?
1981 U.S. Clay Court Championships: The 1981 U.S. Clay Court Championships was a men's Grand Prix and women's Toyota Series tennis tournament held in Indianapolis in the United States and played on outdoor clay courts. Indianapolis: Indianapolis (pronounced ), is the capital and largest city of the U.S. state of Indiana and the seat of Marion County.
Marion County