| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1984 | Italian Grand Prix | Marlboro Team Agostini | Yamaha | 2 | 12 | ||
| 1985 | San Marino Grand Prix | Marlboro Team Agostini | Yamaha | 1 | 15 | ||
| 1986 | San Marino Grand Prix | Marlboro Yamaha Team Agostini | Yamaha | 1 | 15 | ||
| 1987 | San Marino Grand Prix | Marlboro Yamaha Team Agostini | Yamaha | 2 | 12 | ||
| 1989 | Nations Grand Prix | Rothmans Kanemoto Honda | Honda | 2 | Ret | 0 | |
| 1991 | Italian Grand Prix | Cagiva Corse | Cagiva | 4 | 3 | 15 | |
| Avg. | 3 | 1.8 | 13.8 |