All available race results Alphonse Derozier
| Date | Race | Rank |
| 12/06 | G.P. des "Pneus du XX° Siècle" | 26 |
Rider information for 1921
| Rank | 927 |
| Score | 0 |
| Name | Alphonse DEROZIER |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| 12/06 | G.P. des "Pneus du XX° Siècle" | 26 |
| Rank | 927 |
| Score | 0 |
| Name | Alphonse DEROZIER |
| Country | France |
| Team | Individual |