All available race results H.C. Grigsby
| Date | Race | Rank |
| 26/09 | Warrnambool - Melbourne | 79 |
Rider information for 1931
| Rank | 1308 |
| Score | 0 |
| Name | H.C. GRIGSBY |
| Country | Australia |
| Team | Individual |
| Date | Race | Rank |
| 26/09 | Warrnambool - Melbourne | 79 |
| Rank | 1308 |
| Score | 0 |
| Name | H.C. GRIGSBY |
| Country | Australia |
| Team | Individual |