| 1991 | Japanese Grand Prix · Grand Prix | Yamaha | 11 | | Classified |
| 1991 | Australian Grand Prix · Grand Prix | Yamaha | 12 | | Classified |
| 1991 | United States Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1991 | Spanish Grand Prix · Grand Prix | Yamaha | 10 | | Classified |
| 1991 | Italian Grand Prix · Grand Prix | Yamaha | 6 | | Classified |
| 1991 | German Grand Prix · Grand Prix | Yamaha | 9 | | Classified |
| 1991 | Austrian Grand Prix · Grand Prix | Yamaha | 7 | | Classified |
| 1991 | European Grand Prix · Grand Prix | Yamaha | 9 | | Classified |
| 1991 | Dutch TT · Grand Prix | Yamaha | 11 | | Classified |
| 1991 | French Grand Prix · Grand Prix | Yamaha | 6 | | Classified |
| 1991 | British Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1991 | San Marino Grand Prix · Grand Prix | Yamaha | 9 | | Classified |
| 1991 | Czechoslovak Grand Prix · Grand Prix | Yamaha | 10 | | Classified |
| 1991 | Vitesse du Mans Grand Prix · Grand Prix | Yamaha | 7 | | Classified |
| 1991 | Malaysian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1992 | Japanese Grand Prix · Grand Prix | Suzuki | 2 | | Classified |
| 1992 | Australian Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1992 | Malaysian Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1992 | Spanish Grand Prix · Grand Prix | Suzuki | 10 | | Classified |
| 1992 | Italian Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1992 | European Grand Prix · Grand Prix | Suzuki | 3 | | Classified |
| 1992 | German Grand Prix · Grand Prix | Suzuki | 8 | | Classified |
| 1992 | Dutch TT · Grand Prix | Suzuki | — | | Ret |
| 1992 | Hungarian Grand Prix · Grand Prix | Suzuki | 2 | | Classified |
| 1992 | French Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1992 | British Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1992 | Brazilian Grand Prix · Grand Prix | Suzuki | 3 | | Classified |
| 1992 | South African Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1993 | Australian motorcycle Grand Prix · Grand Prix | Cagiva | 3 | | Classified |
| 1993 | Malaysian motorcycle Grand Prix · Grand Prix | Cagiva | 9 | | Classified |
| 1993 | Japanese motorcycle Grand Prix · Grand Prix | Cagiva | 11 | | Classified |
| 1993 | Spanish motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1993 | Austrian motorcycle Grand Prix · Grand Prix | Cagiva | 8 | | Classified |
| 1993 | German motorcycle Grand Prix · Grand Prix | Cagiva | 6 | | Classified |
| 1993 | Dutch TT · Grand Prix | Cagiva | 4 | | Classified |
| 1993 | European motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1993 | San Marino motorcycle Grand Prix · Grand Prix | Cagiva | — | | DNS |
| 1993 | British motorcycle Grand Prix · Grand Prix | Cagiva | — | | DNS |
| 1993 | Czech Republic motorcycle Grand Prix · Grand Prix | Cagiva | 9 | | Classified |
| 1993 | Italian motorcycle Grand Prix · Grand Prix | Cagiva | 10 | | Classified |
| 1993 | United States motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1993 | FIM motorcycle Grand Prix · Grand Prix | Cagiva | 5 | | Classified |
| 1994 | Australian motorcycle Grand Prix · Grand Prix | Cagiva | 9 | | Classified |
| 1994 | Malaysian motorcycle Grand Prix · Grand Prix | Cagiva | 9 | | Classified |
| 1994 | Japanese motorcycle Grand Prix · Grand Prix | Cagiva | 10 | | Classified |
| 1994 | Spanish motorcycle Grand Prix · Grand Prix | Cagiva | 7 | | Classified |
| 1994 | Austrian motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1994 | German motorcycle Grand Prix · Grand Prix | Cagiva | 7 | | Classified |
| 1994 | Dutch TT · Grand Prix | Cagiva | 6 | | Classified |
| 1994 | Italian motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1994 | French motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1994 | British motorcycle Grand Prix · Grand Prix | Cagiva | 5 | | Classified |
| 1994 | Czech Republic motorcycle Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1994 | United States motorcycle Grand Prix · Grand Prix | Cagiva | 5 | | Classified |
| 1994 | Argentine motorcycle Grand Prix · Grand Prix | Cagiva | 2 | | Classified |
| 1994 | European motorcycle Grand Prix · Grand Prix | Cagiva | 10 | | Classified |