Yoann Offredo was competing in the 2013 Paris-Roubaix this weekend, and had one of the nastier incidents involving himself and a street sign. Check out the video which features the 26-year-old Frenchman taking a look behind him while traveling at quite the high speed. He turned around just in time to smash directly into a street sign sending him over his handlebars. He was unable to finish the race, not surprisingly.
Here were a few other low-lights from the Paris-Roubaix:

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