The 1973 South African Open was a combined men's and women's tennis tournament played on outdoor hard courts in Johannesburg, South Africa that was part of the 1973 Commercial Union Assurance Grand Prix. It was the 70th edition of the tournament and was held from 14 November through 27 November 1973. Jimmy Connors and Chris Evert won the singles titles.[1]
Jimmy Connors defeated Arthur Ashe 6–4, 7–6, 6–3
Chris Evert defeated 
Evonne Goolagong 6–3, 6–3
Arthur Ashe / Tom Okker defeated Lew Hoad / Robert Maud 6–2, 4–6, 6–2, 6–4
Linky Boshoff / Ilana Kloss defeated Chris Evert / 
Virginia Wade 7–6, 2–6, 6–1