All available race results J.B. Holbrook
| Date | Race | Rank |
| 16/11 | Six Days Boston | 8 |
Rider information for 1907
| Rank | 781 |
| Score | 0 |
| Name | J.B. HOLBROOK |
| Country | United States |
| Team | Individual |
| Date | Race | Rank |
| 26/01 | Six Days Kansas City | 5 |
Rider information for 1908
| Rank | 1121 |
| Score | 0 |
| Name | J.B. HOLBROOK |
| Country | United States |
| Team | Individual |