Abstract
In two recent articles, Nicholas Dixon has argued that the intent to hurt and injure opponents which is essential to mixed martial arts makes the sport intrinsically immoral. Although bondage, domination, sadism, and masochism also involves the intentional infliction of pain and injury, Dixon argues that it is morally permissible in many cases. In this paper, I examine the principle underlying Dixon's differentiation of MMA and BDSM. I argue that, when properly elaborated, that principle does not in fact condemn MMA as intrinsically immoral, but rather implies that the attitudes and actions of most autonomously consenting amateur MMA fighters and some autonomously consenting professionals are prima facie morally permissible.