| 1989 | Belgian Grand Prix · Grand Prix | Yamaha | 5 | | Classified |
| 1991 | Japanese Grand Prix · Grand Prix | Yamaha | 4 | | Classified |
| 1991 | Australian Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1991 | United States Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1991 | Spanish Grand Prix · Grand Prix | Yamaha | 2 | | Classified |
| 1991 | Italian Grand Prix · Grand Prix | Yamaha | 2 | | Classified |
| 1991 | German Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1991 | Austrian Grand Prix · Grand Prix | Yamaha | 9 | | Classified |
| 1991 | European Grand Prix · Grand Prix | Yamaha | 5 | | Classified |
| 1991 | Dutch TT · Grand Prix | Yamaha | 6 | | Classified |
| 1991 | French Grand Prix · Grand Prix | Yamaha | — | | DNS |
| 1991 | British Grand Prix · Grand Prix | Yamaha | 4 | | Classified |
| 1991 | San Marino Grand Prix · Grand Prix | Yamaha | 6 | | Classified |
| 1991 | Czechoslovak Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1991 | Vitesse du Mans Grand Prix · Grand Prix | Yamaha | 4 | | Classified |
| 1991 | Malaysian Grand Prix · Grand Prix | Yamaha | 1 | | Classified |
| 1992 | Japanese Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1992 | Australian Grand Prix · Grand Prix | Yamaha | — | | DNQ |
| 1992 | Spanish Grand Prix · Grand Prix | Yamaha | 5 | | Classified |
| 1992 | Italian Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1992 | European Grand Prix · Grand Prix | Yamaha | 5 | | Classified |
| 1992 | German Grand Prix · Grand Prix | Yamaha | 5 | | Classified |
| 1992 | Dutch TT · Grand Prix | Yamaha | 2 | | Classified |
| 1992 | Hungarian Grand Prix · Grand Prix | Yamaha | 7 | | Classified |
| 1992 | French Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1992 | British Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1992 | Brazilian Grand Prix · Grand Prix | Yamaha | 2 | | Classified |
| 1992 | South African Grand Prix · Grand Prix | Yamaha | 1 | | Classified |
| 1993 | Czech Republic motorcycle Grand Prix · Grand Prix | Cagiva | 4 | | Classified |
| 1993 | Italian motorcycle Grand Prix · Grand Prix | Cagiva | 4 | | Classified |
| 1993 | United States motorcycle Grand Prix · Grand Prix | Cagiva | 1 | | Classified |
| 1993 | FIM motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1994 | Australian motorcycle Grand Prix · Grand Prix | Cagiva | 1 | | Classified |
| 1994 | Malaysian motorcycle Grand Prix · Grand Prix | Cagiva | 2 | | Classified |
| 1994 | Japanese motorcycle Grand Prix · Grand Prix | Cagiva | 9 | | Classified |
| 1994 | Spanish motorcycle Grand Prix · Grand Prix | Cagiva | 3 | | Classified |
| 1994 | Austrian motorcycle Grand Prix · Grand Prix | Cagiva | 5 | | Classified |
| 1994 | German motorcycle Grand Prix · Grand Prix | Cagiva | — | | DNS |
| 1994 | Dutch TT · Grand Prix | Cagiva | 8 | | Classified |
| 1994 | Italian motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1994 | French motorcycle Grand Prix · Grand Prix | Cagiva | 2 | | Classified |
| 1994 | British motorcycle Grand Prix · Grand Prix | Cagiva | 4 | | Classified |
| 1994 | Czech Republic motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1994 | United States motorcycle Grand Prix · Grand Prix | Cagiva | 2 | | Classified |
| 1994 | Argentine motorcycle Grand Prix · Grand Prix | Cagiva | 3 | | Classified |
| 1994 | European motorcycle Grand Prix · Grand Prix | Cagiva | 3 | | Classified |
| 1998 | Japanese motorcycle Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1998 | Malaysian motorcycle Grand Prix · Grand Prix | Honda | 5 | | Classified |
| 1998 | Spanish motorcycle Grand Prix · Grand Prix | Honda | 11 | | Classified |
| 1998 | Italian motorcycle Grand Prix · Grand Prix | Honda | 5 | | Classified |
| 1998 | French motorcycle Grand Prix · Grand Prix | Honda | 4 | | Classified |
| 1998 | Madrid motorcycle Grand Prix · Grand Prix | Honda | — | | Ret |
| 1998 | Dutch TT · Grand Prix | Honda | — | | DNS |
| 1998 | Czech Republic motorcycle Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1998 | City of Imola motorcycle Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1998 | Catalan motorcycle Grand Prix · Grand Prix | Honda | 9 | | Classified |
| 1998 | Australian motorcycle Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1998 | Argentine motorcycle Grand Prix · Grand Prix | Honda | 10 | | Classified |
| 1999 | Malaysian motorcycle Grand Prix · Grand Prix | Honda | — | | Ret |
| 1999 | Japanese motorcycle Grand Prix · Grand Prix | Honda | — | | Ret |
| 1999 | Spanish motorcycle Grand Prix · Grand Prix | Honda | 6 | | Classified |
| 1999 | French motorcycle Grand Prix · Grand Prix | Honda | 2 | | Classified |
| 1999 | Italian motorcycle Grand Prix · Grand Prix | Honda | 8 | | Classified |
| 1999 | Catalan motorcycle Grand Prix · Grand Prix | Honda | 9 | | Classified |
| 1999 | Dutch TT · Grand Prix | Honda | 7 | | Classified |
| 1999 | British motorcycle Grand Prix · Grand Prix | Honda | 9 | | Classified |
| 1999 | German motorcycle Grand Prix · Grand Prix | Honda | 5 | | Classified |
| 1999 | Czech Republic motorcycle Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1999 | City of Imola motorcycle Grand Prix · Grand Prix | Honda | 8 | | Classified |
| 1999 | Valencian Community motorcycle Grand Prix · Grand Prix | Honda | 8 | | Classified |
| 1999 | Australian motorcycle Grand Prix · Grand Prix | Honda | 9 | | Classified |
| 1999 | South African motorcycle Grand Prix · Grand Prix | Honda | 10 | | Classified |
| 1999 | Rio de Janeiro motorcycle Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1999 | Argentine motorcycle Grand Prix · Grand Prix | Honda | 7 | | Classified |