| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1988 | United States Grand Prix | Team Lucky Strike Roberts | Yamaha | 4 | 13 | ||
| 1989 | United States Grand Prix | Team Lucky Strike Roberts | Yamaha | 1 | 1 | 20 | |
| 1990 | United States Grand Prix | Marlboro Team Roberts | Yamaha | 20 | 1 | 0 | |
| 1991 | United States Grand Prix | Marlboro Team Roberts | Yamaha | 1 | 1 | 20 | |
| Avg. | 7.3 | 1.8 | 17.7 |