| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1987 | Japanese Grand Prix | Marlboro Yamaha Team Agostini | Yamaha | 6 | 5 | ||
| 1988 | Japanese Grand Prix | Tech 21 | Yamaha | 5 | 11 | ||
| 1989 | Japanese Grand Prix | Yamaha Motor Company | Yamaha | 1 | 8 | 8 | |
| 1990 | Japanese Grand Prix | 21 | Tech 21 | Yamaha | 10 | 6 | 0 |
| 1991 | Japanese Grand Prix | YRTR | Yamaha | 14 | Ret | 0 | |
| Avg. | 8.3 | 6.3 | 8 |