| 1980 | Nations Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1980 | Spanish Grand Prix · Grand Prix | Yamaha | — | | DNQ |
| 1980 | French Grand Prix · Grand Prix | Yamaha | 11 | | Classified |
| 1980 | Dutch TT · Grand Prix | Yamaha | — | | DNQ |
| 1980 | Belgian Grand Prix · Grand Prix | Yamaha | 12 | | Classified |
| 1980 | Finnish Grand Prix · Grand Prix | Yamaha | 10 | | Classified |
| 1980 | British Grand Prix · Grand Prix | Yamaha | 14 | | Classified |
| 1981 | Großer Preis von Österreich · Grand Prix | Suzuki | — | | Ret |
| 1981 | Großer Preis von Deutschland · Grand Prix | Suzuki | 15 | | Classified |
| 1981 | Gran Premio delle Nazioni · Grand Prix | Suzuki | 15 | | Classified |
| 1981 | Grand Prix de France Moto · Grand Prix | Suzuki | — | | Ret |
| 1982 | French Grand Prix · Grand Prix | Suzuki | — | | WD |
| 1982 | Nations Grand Prix · Grand Prix | Suzuki | 11 | | Classified |
| 1982 | Dutch TT · Grand Prix | Suzuki | 10 | | Classified |
| 1982 | Belgian Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1983 | South African Grand Prix · Grand Prix | Honda | 7 | | Classified |
| 1983 | French Grand Prix · Grand Prix | Honda | — | | Ret |
| 1983 | Nations Grand Prix · Grand Prix | Honda | 6 | | Classified |
| 1983 | German Grand Prix · Grand Prix | Honda | 5 | | Classified |
| 1983 | Spanish Grand Prix · Grand Prix | Honda | — | | Ret |
| 1983 | Austrian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1983 | Yugoslavian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1983 | Dutch TT · Grand Prix | Honda | 9 | | Classified |
| 1983 | Belgian Grand Prix · Grand Prix | Honda | — | | DNS |
| 1983 | Swedish Grand Prix · Grand Prix | Honda | 8 | | Classified |
| 1983 | San Marino Grand Prix · Grand Prix | Honda | 7 | | Classified |
| 1984 | South African Grand Prix · Grand Prix | Honda | 2 | | Classified |
| 1984 | Italian Grand Prix · Grand Prix | Honda | 3 | | Classified |
| 1984 | Spanish Grand Prix · Grand Prix | Honda | 3 | | Classified |
| 1984 | Austrian Grand Prix · Grand Prix | Honda | 6 | | Classified |
| 1984 | German Grand Prix · Grand Prix | Honda | 5 | | Classified |
| 1984 | French Grand Prix · Grand Prix | Honda | — | | Ret |
| 1984 | Yugoslavian Grand Prix · Grand Prix | Honda | 3 | | Classified |
| 1984 | Dutch TT · Grand Prix | Honda | 2 | | Classified |
| 1984 | Belgian Grand Prix · Grand Prix | Honda | 3 | | Classified |
| 1984 | British Grand Prix · Grand Prix | Honda | — | | Ret |
| 1984 | Swedish Grand Prix · Grand Prix | Honda | 2 | | Classified |
| 1984 | San Marino Grand Prix · Grand Prix | Honda | 2 | | Classified |
| 1985 | South African Grand Prix · Grand Prix | Yamaha | — | | DNF |
| 1985 | Spanish Grand Prix · Grand Prix | Yamaha | 5 | | Classified |
| 1985 | German Grand Prix · Grand Prix | Yamaha | 13 | | Classified |
| 1985 | Italian Grand Prix · Grand Prix | Yamaha | 7 | | Classified |
| 1985 | Austrian Grand Prix · Grand Prix | Yamaha | 10 | | Classified |
| 1985 | Yugoslavian Grand Prix · Grand Prix | Yamaha | 6 | | Classified |
| 1985 | Dutch TT · Grand Prix | Yamaha | — | | DNF |
| 1985 | Belgian Grand Prix · Grand Prix | Yamaha | 5 | | Classified |
| 1985 | French Grand Prix · Grand Prix | Yamaha | 2 | | Classified |
| 1985 | British Grand Prix · Grand Prix | Yamaha | 6 | | Classified |
| 1985 | Swedish Grand Prix · Grand Prix | Yamaha | 8 | | Classified |
| 1985 | San Marino Grand Prix · Grand Prix | Yamaha | 4 | | Classified |
| 1986 | Spanish Grand Prix · Grand Prix | Honda | 6 | | Classified |
| 1986 | Italian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1986 | German Grand Prix · Grand Prix | Honda | 7 | | Classified |
| 1986 | Austrian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1986 | Yugoslavian Grand Prix · Grand Prix | Honda | 7 | | Classified |
| 1986 | Dutch TT · Grand Prix | Honda | 6 | | Classified |
| 1986 | Belgian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1986 | French Grand Prix · Grand Prix | Honda | — | | Ret |
| 1986 | British Grand Prix · Grand Prix | Honda | 6 | | Classified |
| 1986 | Swedish Grand Prix · Grand Prix | Honda | 5 | | Classified |
| 1986 | San Marino Grand Prix · Grand Prix | Honda | 5 | | Classified |
| 1987 | Japanese Grand Prix · Grand Prix | Cagiva | 10 | | Classified |
| 1987 | Spanish Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1987 | German Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1987 | Italian Grand Prix · Grand Prix | Cagiva | 9 | | Classified |
| 1987 | Austrian Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1987 | Yugoslavian Grand Prix · Grand Prix | Cagiva | 5 | | Classified |
| 1987 | Dutch TT · Grand Prix | Cagiva | — | | Ret |
| 1987 | French Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1987 | Czechoslovak Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1987 | San Marino Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1987 | Portuguese Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1987 | Brazilian Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1987 | Argentine Grand Prix · Grand Prix | Cagiva | 5 | | Classified |
| 1988 | Japanese Grand Prix · Grand Prix | GP500 | — | | Ret |
| 1988 | United States Grand Prix · Grand Prix | GP500 | — | | Ret |
| 1988 | Spanish Grand Prix · Grand Prix | GP500 | 11 | | Classified |
| 1988 | Expo 92 Grand Prix · Grand Prix | GP500 | — | | Ret |
| 1988 | Italian Grand Prix · Grand Prix | GP500 | 9 | | Classified |
| 1988 | Yugoslavian Grand Prix · Grand Prix | GP500 | — | | Ret |
| 1988 | French Grand Prix · Grand Prix | GP500 | — | | Ret |
| 1988 | British Grand Prix · Grand Prix | GP500 | — | | Ret |
| 1988 | Swedish Grand Prix · Grand Prix | GP500 | 15 | | Classified |
| 1988 | Czechoslovak Grand Prix · Grand Prix | GP500 | — | | Ret |
| 1989 | Nations Grand Prix · Grand Prix | Cagiva | — | | Ret |
| 1989 | French Grand Prix · Grand Prix | Cagiva | — | | Ret |