Watkins Glen 6 Hours: Andrea de Adamich / Ronnie Peterson, Autodelta SpA, Alfa Romeo T33/3 leads Alain De Cadenet / Lothar Motschenbacher, Ecurie Francorchamps, Ferrari 512 M.
Andrea de Adamich / Ronnie Peterson, Autodelta SpA, Alfa Romeo T33/3 leads Alain De Cadenet / Lothar Motschenbacher, Ecurie Francorchamps, Ferrari 512 M.