United States GP: Mario Andretti, Lotus 49B Ford, leads Jackie Stewart, Matra MS10 Ford, Graham Hill, Lotus 49B Ford, and Chris Amon, Ferrari 312, at the start.
Mario Andretti, Lotus 49B Ford, leads Jackie Stewart, Matra MS10 Ford, Graham Hill, Lotus 49B Ford, and Chris Amon, Ferrari 312, at the start.