Watkins Glen 6 Hours: Jacky Ickx / Mario Andretti, SpA Ferrari SEFAC, Ferrari 312 PB leads Jo Siffert / Gijs van Lennep, J.W. Automotive Engineering, Porsche 917 K and Derek Bell / Richard Attwood, J.W. Automotive Engineering, Porsche 917 K.
Jacky Ickx / Mario Andretti, SpA Ferrari SEFAC, Ferrari 312 PB leads Jo Siffert / Gijs van Lennep, J.W. Automotive Engineering, Porsche 917 K and Derek Bell / Richard Attwood, J.W. Automotive Engineering, Porsche 917 K.