Although Josh "Cole Cash" Hawes plays a fictionalized version of himself, the injuries he talks about in the film are very real. Tim Hagan also discusses real injuries. The match shown at the end of the film really was the last one for Josh Hawes.
The part of Scott Levy was written for Elvis McComas based on the audition video he sent. He really wanted his character to flip out in the movie, so a take was filmed where he was given free reign. That take was used.