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Astana's Fabio Aru (R) and Spain's Alberto Contador (C) cross the finish line of the 5th stage of the Giro d'Italia, Tour of Italy, cycling race between La Spezia and Abetone on May 13, 2015 in Abetone. The 23-year-old Slovenian Jan Polanc won stage five of the Giro d'Italia as the survivor of a long breakaway, while race favourite Alberto Contador took the overall leader's pink jersey. AFP PHOTO / LUK BENIES (Photo credit should read LUK BENIES/AFP via Getty Images)

Astana's Fabio Aru (R) and Spain's Alberto Contador (C) cross the finish line of the 5th stage of the Giro d'Italia, Tour of Italy, cycling race between La Spezia and Abetone on May 13, 2015 in Abetone. The 23-year-old Slovenian Jan Polanc won stage five of the Giro d'Italia  as the survivor of a long breakaway, while race favourite Alberto Contador took the overall leader's pink jersey. AFP PHOTO / LUK BENIES        (Photo credit should read LUK BENIES/AFP via Getty Images)