Professional Bull Riding is a growing action sport, but many people have yet to experience an event in person. More than a thousand cowboys are members of the Professional Bull Riders organization, known as the PBR, which has doled out upwards of $140 million to winners in its more than 20 year existence.

 
"It's a very intense sport. There's no referees and no timeouts, so if you get hurt in the arena, that bull's still in there and he's got a chance to hurt you even more," -PBR points leader Shane Proctor on the high stakes of his sport.

We take a listen to an audio postcard from a PBR event in Duluth and hear from Shane Proctor and Derek Kolbaba , two daredevil riders who tangle with two-ton bulls for a career. 

VIDEO: Watch the event kick-off with pyrotechnics and fireworks:

https://www.youtube.com/watch?v=Z1d1bUEzPLU