Info
| Last name | Siboni |
| First name | Marcello |
| Nationality |  Italy |
| Date of birth | 06-01-1965 |
| Age | 61 |
Monuments
| Date | Rank | Race | |
|---|---|---|---|
| 08-10 | DNF |  Paris - Tours (CDM) | |
| 23-09 | 45 | Giro dell'Emilia (1.1) | |
| 12-08 | 86 |  Clásica Ciclista San Sebastián (CDM) | |
| 02-08 | 8 | G.P. Camaiore (1.2) | |
| Tour de France (GT) | |||
| 46 |  Standings | ||
| 23-07 | Stage 21Paris - Paris (138.0km) | ||
| 01-07 | 140 | Stage 1Futuroscope - Futuroscope (16.0km) | |
| 29-04 | 37 | GP Industria e Artigianato Di Larciano (1.2) | |
| 18-03 | 58 | Milano-Sanremo (CDM) | |