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Germany's Tony Martin (L) and Belgium's Tom Boonen (R) ride on the cobblestones during the 114th edition of the Paris-Roubaix one-day classic cycling race, between Compiegne and Roubaix, on April 10, 2016. AFP PHOTO / KENZO TRIBOUILLARD / AFP / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP via Getty Images)

Germany's Tony Martin (L) and Belgium's Tom Boonen (R) ride on the cobblestones during the 114th edition of the Paris-Roubaix one-day classic cycling race, between Compiegne and Roubaix, on April 10, 2016.  AFP PHOTO / KENZO TRIBOUILLARD / AFP / KENZO TRIBOUILLARD        (Photo credit should read KENZO TRIBOUILLARD/AFP via Getty Images)