Watch The Proving Grounds

For the past decade the quickest growing sport in the United States has been Mixed Martial Arts. The leading brand and by far the most recognizable promoter in the world of MMA is the UFC. The violent sport showcases some of the finest fighters and athletes from all over the world, and there is no trainer with a bigger reputation than that of Greg Jackson. Greg Jackson runs a training facility in Albuquerque, New Mexico that has trained countless champions for both the UFC and other organizations around the world. He is one of the most sought after teachers of the sport.

The Proving Grounds is a 2013 documentary with a runtime of 1 hour and 39 minutes.