1 | 1963 | United States Grand Prix | 14 | Siffert Racing Team | Lotus 24 | BRM P56 | 14 | DNF |
2 | 1964 | United States Grand Prix | 22 | Rob Walker Racing Team | Brabham BT11 | BRM 1.5 V8 | 12 | 3 |
3 | 1965 | United States Grand Prix | 16 | Rob Walker Racing Team | Brabham BT11 | BRM 1.5 V8 | 11 | 11 |
4 | 1966 | United States Grand Prix | 19 | Rob Walker Racing Team | Cooper T81 | Maserati 3.0 V12 | 13 | 4 |
5 | 1967 | United States Grand Prix | 15 | Rob Walker/Jack Durlacher Racing | Cooper T81 | Maserati 3.0 V12 | 12 | 4 |
6 | 1968 | United States Grand Prix | 16 | Rob Walker/Jack Durlacher Racing | Lotus 49B | Ford Cosworth Cosworth DFV | 12 | 5 |
7 | 1969 | United States Grand Prix | 10 | Rob Walker/Jack Durlacher Racing | Lotus 49B | Ford Cosworth Cosworth DFV | 5 | DNF |
8 | 1970 | United States Grand Prix | 11 | March Engineering | March 701 | Ford Cosworth Cosworth DFV | 23 | 9 |
9 | 1971 | United States Grand Prix | 14 | Yardley Team BRM | BRM 3.0 V12 | 6 | 2 |