| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1988 | United States Grand Prix | Team HRC | Honda | 3 | 15 | ||
| 1989 | United States Grand Prix | Marlboro Yamaha Team Agostini | Yamaha | 7 | 5 | 11 | |
| 1993 | United States Grand Prix | Valvoline Team WCM | ROC Yamaha | 8 | 8 | ||
| 1994 | United States Grand Prix | Slick 50 Team WCM | ROC Yamaha | 10 | 6 | ||
| Avg. | 7 | 6.5 | 10 |
