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Germany's Marcel Kittel wearing the best sprinter's green jersey, injured after falling, rides during the 183 km seventeenth stage of the 104th edition of the Tour de France cycling race on July 19, 2017 between Le La Mure and Serre-Chevalier, French Alps. / AFP PHOTO / Jeff PACHOUD (Photo credit should read JEFF PACHOUD/AFP/Getty Images)

Germany's Marcel Kittel wearing the best sprinter's green jersey, injured after falling, rides during the 183 km seventeenth stage of the 104th edition of the Tour de France cycling race on July 19, 2017 between Le La Mure and Serre-Chevalier, French Alps.  / AFP PHOTO / Jeff PACHOUD        (Photo credit should read JEFF PACHOUD/AFP/Getty Images)