Cavendish wary of Sagan threat at Tirreno-Adriatico

Tirreno-Adriatico will see fierce rivals Mark Cavendish (Omega Pharma-QuickStep) and André Greipel (Lotto Belisol) line up against one another for the first time this season, but Cavendish has warned that the presence of the in-form Peter Sagan (Cannondale) might alter the complexion of bunch finishes in Italy this week.