Italy`s Nicola Boem of the Bardiani team won the 10th stage of the Tour of Italy on Tuesday with Spanish great Alberto Contador retaining the leader`s pink jersey.
Boem crossed ahead of three Italian breakaway rivals -- Matteo Busato, Alessandro Malagatu et Alan Marangoni.
It was the biggest win for 25-year-old Boem since turning professional in 2013.
Australian Richie Porte, who had been sitting third going into the stage just 22sec behind Contador, lost ground on his rivals, dropping to 1min 09sec behind the Spaniard.
Wednesday`s 11th stage covers 153km from Forli to Imola.