| 1978 | French Grand Prix · Grand Prix | Suzuki | 6 | | Classified |
| 1978 | Nations Grand Prix · Grand Prix | Suzuki | 12 | | Classified |
| 1978 | Dutch TT · Grand Prix | Suzuki | 16 | | Classified |
| 1978 | Belgian Grand Prix · Grand Prix | Suzuki | 14 | | Classified |
| 1978 | Finnish Grand Prix · Grand Prix | Suzuki | 9 | | Classified |
| 1978 | British Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1978 | German Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1979 | German Grand Prix · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1979 | Nations Grand Prix · Grand Prix | Morbidelli 500-4 | 9 | | Classified |
| 1979 | Spanish Grand Prix · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1979 | Yugoslavian Grand Prix · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1979 | Dutch TT · Grand Prix | Morbidelli 500-4 | 12 | | Classified |
| 1979 | Belgian Grand Prix · Grand Prix | Morbidelli 500-4 | — | | DNS |
| 1979 | Swedish Grand Prix · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1979 | Finnish Grand Prix · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1979 | British Grand Prix · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1979 | French Grand Prix · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1980 | Nations Grand Prix · Grand Prix | Suzuki | 3 | | Classified |
| 1980 | Spanish Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1980 | French Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1980 | Dutch TT · Grand Prix | Suzuki | 2 | | Classified |
| 1980 | Belgian Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1980 | Finnish Grand Prix · Grand Prix | Suzuki | 13 | | Classified |
| 1980 | British Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1980 | German Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1981 | Großer Preis von Österreich · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1981 | Großer Preis von Deutschland · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1981 | Gran Premio delle Nazioni · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1981 | Yu Grand Prix · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1981 | Dutch TT Assen · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1981 | Grand Prix Moto · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1981 | Marlboro British Grand Prix · Grand Prix | Morbidelli 500-4 | 11 | | Classified |
| 1981 | Finnish GP · Grand Prix | Morbidelli 500-4 | — | | Ret |
| 1981 | Swedish TT · Grand Prix | Morbidelli 500-4 | 11 | | Classified |
| 1982 | Argentine Grand Prix · Grand Prix | Yamaha | 13 | | Classified |
| 1982 | Austrian Grand Prix · Grand Prix | Yamaha | 14 | | Classified |
| 1982 | Spanish Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1982 | Nations Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1982 | Dutch TT · Grand Prix | Yamaha | 13 | | Classified |
| 1982 | Belgian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1982 | Yugoslavian Grand Prix · Grand Prix | Yamaha | 28 | | Classified |
| 1982 | British Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1982 | Swedish Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1982 | San Marino Grand Prix · Grand Prix | Yamaha | 11 | | Classified |