| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1988 | Japanese Grand Prix | Team Lucky Strike Roberts | Yamaha | 6 | 10 | ||
| 1989 | Japanese Grand Prix | Team Lucky Strike Roberts | Yamaha | 2 | 2 | 17 | |
| 1990 | Japanese Grand Prix | 2 | Marlboro Team Roberts | Yamaha | 1 | 1 | 0 |
| 1991 | Japanese Grand Prix | Marlboro Team Roberts | Yamaha | 5 | 3 | 15 | |
| 1992 | Japanese Grand Prix | Marlboro Team Roberts | Yamaha | Ret | 0 | ||
| 1993 | Japanese Grand Prix | 1 | Marlboro Team Roberts | Yamaha | 3 | 1 | 25 |
| Avg. | 2.8 | 2.6 | 16.8 |