Sean Willingham & Bryan Titman/PBR "THE TOUGHEST SPORT ON DIRT" The rules are simple. Place a wiry 150-pound cowboy on the back of a hulking, snorting temperamental 2,000 pound bull and see if he can ride the beast for an eternal eight seconds…with one hand strapped to the bull's massive backside. In 1992, when 20 [...]
