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CAMBRAI, FRANCE - JULY 07: Tony Martin of Germany and Etixx-Quick Step is awarded the yellow jersey on the podium after stage four of the 2015 Tour de France, a 223.5km stage between Seraing and Cambrai, on July 7, 2015 in Cambrai, France. (Photo by Doug Pensinger/Getty Images)

CAMBRAI, FRANCE - JULY 07:  Tony Martin of Germany and Etixx-Quick Step is awarded the yellow jersey on the podium after stage four of the 2015 Tour de France, a 223.5km stage between Seraing and Cambrai, on July 7, 2015 in Cambrai, France.  (Photo by Doug Pensinger/Getty Images)