| 1989 | Australian Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1989 | United States Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | Spanish Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | Nations Grand Prix · Grand Prix | Honda | 10 | | Classified |
| 1989 | German Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | Austrian Grand Prix · Grand Prix | Honda | 21 | | Classified |
| 1989 | Yugoslavian Grand Prix · Grand Prix | Honda | 20 | | Classified |
| 1989 | Dutch TT · Grand Prix | Honda | 23 | | Classified |
| 1989 | Belgian Grand Prix · Grand Prix | Honda | 19 | | Classified |
| 1989 | French Grand Prix · Grand Prix | Honda | 21 | | Classified |
| 1989 | British Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | Swedish Grand Prix · Grand Prix | Honda | 16 | | Classified |
| 1989 | Czechoslovak Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | Brazilian Grand Prix · Grand Prix | Honda | 17 | | Classified |
| 1990 | United States Grand Prix · Grand Prix | Honda | 10 | | Classified |
| 1990 | Spanish Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1990 | Nations Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1990 | German Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1990 | Yugoslavian Grand Prix · Grand Prix | Honda | 9 | | Classified |
| 1990 | Dutch TT · Grand Prix | Honda | 16 | | Classified |
| 1991 | Australian Grand Prix · Grand Prix | Honda | 16 | | Classified |
| 1991 | United States Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1991 | Spanish Grand Prix · Grand Prix | Honda | — | | Ret |
| 1991 | Italian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1991 | European Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1991 | Dutch TT · Grand Prix | Honda | 15 | | Classified |
| 1991 | French Grand Prix · Grand Prix | Honda | — | | Ret |
| 1991 | British Grand Prix · Grand Prix | Honda | — | | Ret |
| 1991 | Czechoslovak Grand Prix · Grand Prix | Honda | 17 | | Classified |
| 1991 | Malaysian Grand Prix · Grand Prix | Honda | 14 | | Classified |