| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1987 | Japanese Grand Prix | Marlboro Yamaha Team Agostini | Yamaha | Ret | 0 | ||
| 1988 | Japanese Grand Prix | Marlboro Yamaha Team Agostini | Yamaha | 3 | 15 | ||
| 1989 | Japanese Grand Prix | Rothmans Kanemoto Honda | Honda | 10 | 3 | 15 | |
| 1990 | Japanese Grand Prix | 1 | Marlboro Team Roberts | Yamaha | Ret | 4 | |
| 1991 | Japanese Grand Prix | Cagiva Corse | Cagiva | 6 | 6 | 10 | |
| 1992 | Japanese Grand Prix | Cagiva Team Agostini | Cagiva | 14 | 0 | ||
| Avg. | 8 | 6.5 | 11 |
