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COL D'IZOARD, FRANCE - JULY 20: Dan Martin of Ireland and QuickStep Floors climbs the Col d'Izoard on stage eighteen of the 2017 Tour de France, a 179.5km stage from Briancon to Izoard on July 20, 2017 on the Col d'Izoard, France. (Photo by Bryn Lennon/Getty Images)

COL D'IZOARD, FRANCE - JULY 20:  Dan Martin of Ireland and QuickStep Floors climbs the Col d'Izoard on stage eighteen of the 2017 Tour de France, a 179.5km stage from Briancon to Izoard on July 20, 2017 on the Col d'Izoard, France.  (Photo by Bryn Lennon/Getty Images)