Watkins Glen 6 Hours: Herbert Müller / George Eaton, Herbert Müller Racing, Ferrari 512 M leads Tony Adamowicz / Mario Cabral, David Piper Racing, Porsche 917 K.
Herbert Müller / George Eaton, Herbert Müller Racing, Ferrari 512 M leads Tony Adamowicz / Mario Cabral, David Piper Racing, Porsche 917 K.