Zusammenfassung

Fair play in sport, except for the respect of written rules, applies to respecting unwritten rules that fall within the domain of morality. General moral principles are also sporting principles, and the morality of athletes depends largely on whether a fair play manifests itself in sport. In the paper, the author deals with the ethical issue of fair play in sport, as moral principles manifest themselves in sport through fair play and the importance of moral principles for sport and social values. Also, the author deals with the origin of mixed martial arts and their development as a sport, the manifestation of fairness through respect for established rules, the moral dilemmas that athletes can find in and outside sports arena, as well as the actions of athletes to win them. Lately, it is not uncommon for athletes to act dishonestly, both at and outside sports arena, in order to reach a specific goal in competitions, and therefore, they are led by various discussions regarding the fair play in sport.