| 1984 | Spanish Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1984 | French Grand Prix · Grand Prix | Yamaha | 20 | | Classified |
| 1984 | Yugoslavian Grand Prix · Grand Prix | Yamaha | 17 | | Classified |
| 1984 | Belgian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1984 | Swedish Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1984 | San Marino Grand Prix · Grand Prix | Yamaha | 15 | | Classified |
| 1985 | German Grand Prix · Grand Prix | | 14 | | Classified |
| 1985 | Austrian Grand Prix · Grand Prix | | 25 | | Classified |
| 1985 | French Grand Prix · Grand Prix | | — | | DNF |
| 1986 | Spanish Grand Prix · Grand Prix | Fior-Honda | 19 | | Classified |
| 1986 | Italian Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1986 | German Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1986 | Austrian Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1986 | Yugoslavian Grand Prix · Grand Prix | Fior-Honda | 15 | | Classified |
| 1986 | Dutch TT · Grand Prix | Fior-Honda | 11 | | Classified |
| 1986 | French Grand Prix · Grand Prix | Fior-Honda | 12 | | Classified |
| 1986 | British Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1986 | Swedish Grand Prix · Grand Prix | Fior-Honda | 11 | | Classified |
| 1987 | Japanese Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1987 | Spanish Grand Prix · Grand Prix | Fior-Honda | 12 | | Classified |
| 1987 | German Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1987 | Italian Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1987 | Austrian Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1987 | Yugoslavian Grand Prix · Grand Prix | Fior-Honda | 23 | | Classified |
| 1987 | Dutch TT · Grand Prix | Fior-Honda | 13 | | Classified |
| 1987 | French Grand Prix · Grand Prix | Fior-Honda | 11 | | Classified |
| 1987 | British Grand Prix · Grand Prix | Fior-Honda | 14 | | Classified |
| 1987 | Swedish Grand Prix · Grand Prix | Fior-Honda | 21 | | Classified |
| 1987 | Czechoslovak Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1987 | San Marino Grand Prix · Grand Prix | Fior-Honda | 10 | | Classified |
| 1987 | Portuguese Grand Prix · Grand Prix | Fior-Honda | — | | Ret |
| 1987 | Brazilian Grand Prix · Grand Prix | Fior-Honda | 12 | | Classified |
| 1987 | Argentine Grand Prix · Grand Prix | Fior-Honda | 11 | | Classified |
| 1988 | Japanese Grand Prix · Grand Prix | Fior-RS500 | — | | Ret |
| 1988 | United States Grand Prix · Grand Prix | Fior-RS500 | — | | Ret |
| 1988 | Spanish Grand Prix · Grand Prix | Fior-RS500 | — | | Ret |
| 1988 | Expo 92 Grand Prix · Grand Prix | Fior-RS500 | — | | Ret |
| 1988 | Italian Grand Prix · Grand Prix | Fior-RS500 | 14 | | Classified |
| 1988 | German Grand Prix · Grand Prix | Fior-RS500 | 17 | | Classified |
| 1988 | Austrian Grand Prix · Grand Prix | Fior-RS500 | — | | Ret |
| 1988 | Dutch TT · Grand Prix | Fior-RS500 | 15 | | Classified |
| 1988 | Belgian Grand Prix · Grand Prix | Fior-RS500 | 30 | | Classified |
| 1988 | Yugoslavian Grand Prix · Grand Prix | Fior-RS500 | — | | Ret |
| 1988 | French Grand Prix · Grand Prix | Fior-RS500 | 17 | | Classified |
| 1988 | British Grand Prix · Grand Prix | Fior-RS500 | 20 | | Classified |
| 1988 | Swedish Grand Prix · Grand Prix | Fior-RS500 | 19 | | Classified |
| 1988 | Czechoslovak Grand Prix · Grand Prix | Fior-RS500 | 11 | | Classified |
| 1988 | Brazilian Grand Prix · Grand Prix | Fior-RS500 | — | | Ret |
| 1989 | Japanese Grand Prix · Grand Prix | Fior | 20 | | Classified |
| 1989 | Australian Grand Prix · Grand Prix | Fior | 13 | | Classified |
| 1989 | United States Grand Prix · Grand Prix | Fior | 12 | | Classified |
| 1989 | Spanish Grand Prix · Grand Prix | Fior | 12 | | Classified |
| 1989 | Nations Grand Prix · Grand Prix | Fior | 4 | | Classified |
| 1989 | German Grand Prix · Grand Prix | Fior | — | | Ret |
| 1989 | Austrian Grand Prix · Grand Prix | Fior | 14 | | Classified |
| 1989 | Yugoslavian Grand Prix · Grand Prix | Fior | — | | Ret |
| 1989 | Dutch TT · Grand Prix | Fior | 14 | | Classified |
| 1989 | Belgian Grand Prix · Grand Prix | Fior | 12 | | Classified |
| 1989 | French Grand Prix · Grand Prix | Fior | — | | Ret |
| 1989 | British Grand Prix · Grand Prix | Fior | 13 | | Classified |