Info
| Last name | Sierra |
| First name | Juan David |
| Nationality |  Italy |
| Date of birth | 25-01-2005 |
| Age | 21 |
| Date | Rank | Race |
|---|---|---|
| 04-03 | 94 |  UMAG Classic (1.2) |
| 05-02 | 5 |  UEC Track European Championships (Madison) (CC) |
| 02-02 | 7 | UEC Track European Championships (Points Race) (CC) |
