Info
| Last name | Fontanelli |
| First name | Sigfrido |
| Nationality |  Italy |
| Date of birth | 01-10-1947 |
| Place of birth | Pulica di Montelupo |
| Passed away | 20-02-2004 |
| Age when passed away | 56 |
| Place of passing | Lastra a Signa |
Monuments
| Date | Rank | Race | |
|---|---|---|---|
| 11-09 | 3 | Giro del Veneto (1.1) | |
| 28-08 | 9 | Giro del Lazio (1.HC) | |
| 04-08 | 16 | Coppa Sabatini (1.4) | |
| Giro d'Italia (2.HC) | |||
| 45 |  Standings | ||
| 12-06 | Stage 22bMilano - Milano (106.0km) | ||
| 01-06 | 1 | Stage 12Gabicce Mare - Porretta Terme (215.0km) | |
