| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1990 | United States Grand Prix | Cagiva Corse | Cagiva | 8 | 8 | 0 | |
| 1991 | United States Grand Prix | Cagiva Corse | Cagiva | 7 | 6 | 10 | |
| 1993 | United States Grand Prix | Lucky Strike Suzuki | Suzuki | 2 | 20 | ||
| 1994 | United States Grand Prix | Lucky Strike Suzuki | Suzuki | 8 | 8 | ||
| 2005 | United States Grand Prix | 4 | Honda Pons | Honda | 3 | Ret | 0 |
| 2007 | United States Grand Prix | 4 | Pramac d'Antin | Ducati | 17 | 9 | 7 |
| Avg. | 8.8 | 6.6 | 11.3 |
