Jonathan Williams
| Season | Race | Circuit | Position | Team | Car | Engine | Points |
|---|---|---|---|---|---|---|---|
| 1967 | Monterey Grand Prix | Laguna Seca Raceway | 8 | Ferrari 330 P4 | Ferrari | ||
| 1967 | Los Angeles Times Grand Prix | Riverside International Raceway | 30 | Ferrari 330 P4 | Ferrari | ||
| 1967 | Stardust Grand Prix | Stardust Raceway | 25 | Ferrari 330 P4 | Ferrari |