A little better than 1 in 10 if you showed up to the audition:
Of the 149 men who showed up to audition, about 20 will join candidates who submitted tapes or were recommended by current UFC fighters for a final audition in Las Vegas. Then, 16 will be selected to have their lives taped while they train, live and fight together. Filming begins in January.
When they called the names it was exactly as expected, it was the TOP NJ pro fighters only, and a couple guys from Serra's. Guys came in from California, Miami, Atlanta, Canada, etc to tryout but this was purely a "publicity" stunt, they knew in advance who they wanted to go on to the next phase of the tryout. It was definately fun though. And everyone was very cool to each other.