sentences:  Scarponi was selected for the UCI Road World Championships in Mendrisio, Switzerland, where he failed to finish the road race.Scarponi started 2010 with top tens at the Giro di Sardegna (seventh), and ninth at the Classica Sarda in February, before attempting to retain his Tirreno−Adriatico title.He took the race lead with victory in the fourth stage, attacking with Vincenzo Nibali, before later dropping him on the run-in to Chieti.