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Winner US Jessica Diggins (C) celebrates on the podium with Finland's second-placed Krista Parmakoski (L) and third-placed US Sadie Bjornsen after competing in the Women's 5 km individual free competition of the "Tour de Ski" Cross Country World Cup on January 6, 2017 in the Italian Alpine resort of Toblach. / AFP / GIUSEPPE CACACE (Photo credit should read GIUSEPPE CACACE/AFP/Getty Images)

Winner US Jessica Diggins (C) celebrates on the podium with Finland's second-placed Krista Parmakoski (L) and third-placed US Sadie Bjornsen after competing in the Women's 5 km individual free competition of the "Tour de Ski" Cross Country World Cup on January 6, 2017  in the Italian Alpine resort of Toblach.   / AFP / GIUSEPPE CACACE        (Photo credit should read GIUSEPPE CACACE/AFP/Getty Images)