It requires adherence to become one of the highest-paid fighters in the UFC. Mixed martial arts warriors are some of the toughest athletes on the planet Earth. This sport has grown so fast - and for this reason, the salaries saw an incredible increase during the last decade. Under Dana White's promotion, the UFC fighters now have a chance to earn some big bucks. However, not every challenger has the endurance to stay on the highest level for many years, as this sport is fierce, and only the greats and their careers last longer. These fighters can make millions of...