| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1996 | Japanese Grand Prix | Marlboro Yamaha Roberts | Yamaha | 12 | 4 | ||
| 1997 | Japanese Grand Prix | Marlboro Team Roberts | Modenas KR3 | Ret | 0 | ||
| 1998 | Japanese Grand Prix | 10 | Team Roberts | Modenas KR3 | 15 | 11 | 5 |
| 2000 | Japanese Grand Prix | 2 | Telefônica Movistar Suzuki | Suzuki | 1 | 2 | 20 |
| 2001 | Japanese Grand Prix | 1 | Telefônica Movistar Suzuki | Suzuki | 9 | 7 | 9 |
| 2002 | Japanese Grand Prix | 10 | Telefônica Movistar Suzuki | Suzuki | 10 | Ret | 0 |
| 2003 | Japanese Grand Prix | 10 | Suzuki Grand Prix Team | Suzuki | 7 | 14 | 2 |
| Avg. | 8.4 | 9.2 | 8 |