| 1987 | German Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | Austrian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | German Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1988 | Dutch TT · Grand Prix | Honda | 19 | | Classified |
| 1988 | Yugoslavian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | Australian Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1989 | United States Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1989 | Spanish Grand Prix · Grand Prix | Honda | 20 | | Classified |
| 1989 | Nations Grand Prix · Grand Prix | Honda | 3 | | Classified |
| 1989 | German Grand Prix · Grand Prix | Honda | 21 | | Classified |
| 1989 | Austrian Grand Prix · Grand Prix | Honda | 19 | | Classified |
| 1989 | Yugoslavian Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1989 | Dutch TT · Grand Prix | Honda | 17 | | Classified |
| 1989 | Czechoslovak Grand Prix · Grand Prix | Honda | 20 | | Classified |
| 1991 | Spanish Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1991 | Italian Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1991 | German Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1991 | Austrian Grand Prix · Grand Prix | Honda | 11 | | Classified |
| 1991 | European Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1991 | Dutch TT · Grand Prix | Honda | 14 | | Classified |
| 1991 | French Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1991 | British Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1991 | San Marino Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1991 | Czechoslovak Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1991 | Vitesse du Mans Grand Prix · Grand Prix | Honda | — | | Ret |
| 1992 | Japanese Grand Prix · Grand Prix | Yamaha | 15 | | Classified |
| 1992 | Australian Grand Prix · Grand Prix | Yamaha | 18 | | Classified |
| 1992 | Malaysian Grand Prix · Grand Prix | Yamaha | 14 | | Classified |
| 1992 | Spanish Grand Prix · Grand Prix | Yamaha | 16 | | Classified |
| 1992 | Italian Grand Prix · Grand Prix | Yamaha | 16 | | Classified |
| 1992 | European Grand Prix · Grand Prix | Yamaha | 18 | | Classified |
| 1992 | German Grand Prix · Grand Prix | Yamaha | 14 | | Classified |
| 1992 | Dutch TT · Grand Prix | Yamaha | 11 | | Classified |
| 1992 | Hungarian Grand Prix · Grand Prix | Yamaha | 16 | | Classified |
| 1992 | French Grand Prix · Grand Prix | Yamaha | 14 | | Classified |
| 1992 | British Grand Prix · Grand Prix | Yamaha | 8 | | Classified |
| 1992 | Brazilian Grand Prix · Grand Prix | Yamaha | 15 | | Classified |
| 1992 | South African Grand Prix · Grand Prix | Yamaha | 19 | | Classified |
| 1993 | Australian motorcycle Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1993 | Malaysian motorcycle Grand Prix · Grand Prix | Yamaha | 17 | | Classified |
| 1993 | Japanese motorcycle Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1993 | Spanish motorcycle Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1993 | Austrian motorcycle Grand Prix · Grand Prix | Yamaha | 17 | | Classified |
| 1993 | German motorcycle Grand Prix · Grand Prix | Yamaha | 13 | | Classified |
| 1993 | Dutch TT · Grand Prix | Yamaha | 12 | | Classified |
| 1993 | European motorcycle Grand Prix · Grand Prix | Yamaha | 17 | | Classified |
| 1993 | San Marino motorcycle Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1993 | British motorcycle Grand Prix · Grand Prix | Yamaha | 10 | | Classified |
| 1993 | Czech Republic motorcycle Grand Prix · Grand Prix | Yamaha | 13 | | Classified |
| 1993 | Italian motorcycle Grand Prix · Grand Prix | Yamaha | 15 | | Classified |
| 1993 | United States motorcycle Grand Prix · Grand Prix | Yamaha | 18 | | Classified |
| 1993 | FIM motorcycle Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1996 | German motorcycle Grand Prix · Grand Prix | Suzuki | — | | Ret |