The Tennis South Invitational, also known as the Mississippi Indoors, was a men's tennis tournament played at the Mississippi Coliseum in Jackson, Mississippi in the United States from 1973 until 1977. The event was played as part of the USLTA Indoor Circuit from 1973 through 1975^[1] and became a World Championship Tennis event in 1976. In its final year, 1977, it was an independent event, i.e. not part of a tennis tour or circuit.^[2] The tournament was played on indoor carpet courts. Ken Rosewall was the only multiple singles champion, winning the title in 1975 and 1976.