| 1984 | Italian Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1984 | San Marino Grand Prix · Grand Prix | Suzuki | 18 | | Classified |
| 1985 | South African Grand Prix · Grand Prix | Honda | 17 | | Classified |
| 1985 | Spanish Grand Prix · Grand Prix | Honda | — | | DNF |
| 1985 | Yugoslavian Grand Prix · Grand Prix | Honda | — | | DNS |
| 1986 | Italian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1986 | Dutch TT · Grand Prix | Honda | — | | Ret |
| 1986 | French Grand Prix · Grand Prix | Honda | 18 | | Classified |
| 1987 | Japanese Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | Spanish Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1987 | German Grand Prix · Grand Prix | Honda | — | | DNS |
| 1987 | Italian Grand Prix · Grand Prix | Honda | 18 | | Classified |
| 1987 | Austrian Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1987 | Yugoslavian Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1987 | Dutch TT · Grand Prix | Honda | — | | Ret |
| 1987 | French Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | British Grand Prix · Grand Prix | Honda | 19 | | Classified |
| 1987 | Swedish Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | Czechoslovak Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | San Marino Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1987 | Portuguese Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | Japanese Grand Prix · Grand Prix | Honda | 19 | | Classified |
| 1988 | United States Grand Prix · Grand Prix | Honda | 11 | | Classified |
| 1988 | Spanish Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1988 | Expo 92 Grand Prix · Grand Prix | Honda | 10 | | Classified |
| 1988 | Italian Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1988 | German Grand Prix · Grand Prix | Honda | 16 | | Classified |
| 1988 | Austrian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | Dutch TT · Grand Prix | Honda | — | | Ret |
| 1988 | Belgian Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1988 | Yugoslavian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | French Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1988 | British Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | Swedish Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | Czechoslovak Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1988 | Brazilian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | Japanese Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1989 | Australian Grand Prix · Grand Prix | Yamaha | 11 | | Classified |
| 1989 | United States Grand Prix · Grand Prix | Yamaha | 11 | | Classified |
| 1989 | Spanish Grand Prix · Grand Prix | Yamaha | 10 | | Classified |
| 1989 | Nations Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1989 | German Grand Prix · Grand Prix | Yamaha | 13 | | Classified |
| 1989 | Austrian Grand Prix · Grand Prix | Yamaha | 12 | | Classified |
| 1989 | Yugoslavian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1989 | Dutch TT · Grand Prix | Yamaha | 12 | | Classified |
| 1989 | Belgian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1989 | French Grand Prix · Grand Prix | Yamaha | 13 | | Classified |
| 1989 | British Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1989 | Swedish Grand Prix · Grand Prix | Yamaha | 11 | | Classified |
| 1989 | Czechoslovak Grand Prix · Grand Prix | Yamaha | 14 | | Classified |
| 1989 | Brazilian Grand Prix · Grand Prix | Yamaha | 13 | | Classified |