The Virginia Slims Circuit[1] was a tennis tour consisting of a group of originally nine female professional players. Formed in 1970, the Virginia Slims Circuit eventually became the basis for the later WTA Tour.[2] The players, dubbed the Original 9, rebelled against the United States Lawn Tennis Association (USLTA) because of the wide inequality between the amount of prize money paid to male tennis players and to female tennis players.[3]