Any of the UFC's Mixed Martial Artists will tell you that the years of honing your craft, gruelling sparring, monotonous drills and sharpening of technique are hard enough, but to actually defeat another individual in the Octagon is another sizeable barrier in itself.
Stars aren't made overnight, contrary to popular belief, and to consistently score 'W's takes a measure of dedication that only the few can maintain for a lengthy spell in their careers.
So, take all that, then add into the equation an injury that would generally debilitate an average human being and you can see the sort of athletes we are talking about in this list.
Whereas in football, for example, a player may be forced out of action for a pulled hamstring or sprained ankle, a fighter will regularly fight through the pain in order to achieve their goal. Simply put, these athletes aren't given the opportunity to fight week-in week-out if an injury threatens their moment, they will be driven to overcome it.
Winning is everything and you must be prepared to put everything on the line in order to do so. When you go to war, you accept the consequences. Nevertheless, what these 10 UFC fighters' went through to achieve victory turns fighting through a pain threshold up to an unfathomable degree.