J.B. Mauney spent his entire life in the chute before suffering a career-ending injury. Now, less than a year later, the two-time world champion bull rider is back in the same place he started.

He was, after all, the last bull the great J.B. Mauney ever rode, and it was a ride that didn't last long; the bull, Arctic Assassin, bucked him off within seconds last September, and Mauney broke ...