This research problem focused on the growing phenomenon of competitive sports aggression in the local sports environment, especially in the field of football, as the Iraqi football league witnesses on a weekly basis repeated manifestations of violence and aggression on the field or in the stands of the fans. The study's main objective is to find the relationship between competitive aggression and self-concept that stems from studying the hierarchy of scales, starting with the competitive aggression scale, and to find its relationship to the self-concept of players of first-class clubs in the southern region for the year (2022–2023).The dimensions of this problem are many, distributed between the social and cultural dimensions of society, and the mental level of the players, and the cultural sports awareness of the masses, and between the strength of the administrative institutions that manage these tournaments. For the purpose of studying this phenomenon in a precise scientific manner, the researcher decided to study one of the axes that feed this phenomenon, which is adaptation. Psychological and knowledge of the nature of its relationship to the phenomenon of competitive aggression and self-concept, and thus analyzing that relationship to develop appropriate solutions. The study is to develop measures of competitive aggression and self-concept among football players from elite southern clubs, as well as to determine the correlation between the measures and derive the measures' levels and criteria.