Alessandro Petacchi claims victory on stage four of the Tour de France in sprint finish . The Italian rider won a time trial and then took over from Lance Armstrong to win Stage 4 after he was caught with an asthma inhaler during Sunday's stage. He heads off New Zealander Julian Dean as sprint rival Mark Cavendish ends in 12th . He seems really strong now and , if he wants to , he come make it all the way to Paris . Fabian Cancellara retains overall leader 's jersey as he finishes in the 163-strong peloton .
Alessandro Petacchi claims victory on stage four of the Tour de France in sprint finish . The Italian rider won a time trial and then took over from Lance Armstrong to win Stage 4 after he was caught with an asthma inhaler during Sunday's stage. He heads off New Zealander Julian Dean as sprint rival Mark Cavendish ends in 12th . Fabian Cancellara retains overall leader 's jersey as he finishes in the 163-strong peloton .