Info
| Last name | Siboni |
| First name | Marcello |
| Nationality |  Italy |
| Date of birth | 06-01-1965 |
| Age | 61 |
Monuments
| Date | Rank | Race | |
|---|---|---|---|
| 16-10 | 21 | Giro di Lombardia (CDM) | |
| 26-09 | 8 | Milano-Vignola (1.2) | |
| 25-09 | 3 | Giro dell'Emilia (1.1) | |
| 18-09 | 8 | Giro del Lazio (1.HC) | |
| 28-08 | 9 | Giro del Veneto (1.1) | |
 Vuelta a Burgos (2.1) | |||
| 14 |  Standings | ||
| 20-08 | Stage 5Belorado - Burgos (160.0km) | ||
| 18-08 | 10 | Stage 3Briviesca - Miranda de Ebro (182.0km) | |
| 07-08 | 49 | Clásica Ciclista San Sebastián (CDM) | |
| Volta Ciclista a Catalunya (2.HC) | |||
| 19 | Standings | ||
| 24-06 | Stage 7San Julia de Loira - Alt de la Rabassa (14.0km) | ||
| Giro di Trentino (2.2) | |||
| 29-04 | 10 | Stage 4Riva del Garda - Arco (155.0km) | |