| Date | Track | Series / Event | Pos | Car |
| 1997 |
| 1997/04/20 | Suzuka (JAP) | World 250ccm Championship | 1 | Honda |
| 1998 |
| 1998/04/05 | Suzuka (JAP) | World 250ccm Championship | 1 | Honda |
| 2000 |
| 2000/04/09 | Suzuka (JAP) | World 250ccm Championship | 1 | Honda |
| 2000/09/03 | Estoril (POR) | World 250ccm Championship | 1 | Honda |
| 2000/10/07 | Rio de Janeiro (BRA) | World 250ccm Championship | 1 | Honda |
| 2000/10/15 | Motegi (JAP) | World 250ccm Championship | 1 | Honda |
| 2001 |
| 2001/04/08 | Suzuka (JAP) | World 250ccm Championship | 1 | Honda |
| 2001/04/22 | Welkom (ZA) | World 250ccm Championship | 1 | Honda |
| 2001/05/06 | Jerez (ESP) | World 250ccm Championship | 1 | Honda |
| 2001/05/20 | Le Mans (FRA) | World 250ccm Championship | 1 | Honda |
| 2001/06/17 | Barcelona (ESP) | World 250ccm Championship | 1 | Honda |
| 2001/07/08 | Donington (GBR) | World 250ccm Championship | 1 | Honda |
| 2001/09/09 | Estoril (POR) | World 250ccm Championship | 1 | Honda |
| 2001/09/23 | Valencia (ESP) | World 250ccm Championship | 1 | Honda |
| 2001/10/14 | Phillip Island (AUS) | World 250ccm Championship | 1 | Honda |
| 2001/10/21 | Sepang (MAL) | World 250ccm Championship | 1 | Honda |
| 2001/11/03 | Rio de Janeiro (BRA) | World 250ccm Championship | 1 | Honda |
