The 1970 South American Open Championships[1] was a men's tennis tournament that was part of the 1970 Pepsi-Cola Grand Prix and held in Buenos Aires, Argentina. It was the third edition of the tournament held in Buenos Aires (they have also been held in Chile and Ecuador) and ran from 31 October through 8 November 1970. It was played on outdoor clay courts. Željko Franulović won the singles title.
See main article: 1970 ATP Buenos Aires – Singles. Željko Franulović defeated Manuel Orantes 6–4, 6–2, 6–0
Bob Carmichael /
Ray Ruffels defeated Željko Franulović / Jan Kodeš 7–5, 6–2, 5–7, 6–7, 6–3