During the last years the leadership of the Ukrainian Football Federation has been changing. This, accordingly, changed the attitude to the views on the football development and to the competition holding. Ukrainian football today undergoes changes. This happens with consideration the tendencies of the world and internal economy development and needs of the sports spectacles' Ukrainian consumer. Today, the system of competitions, especially their organization and conduct, which taking into account the demands of modern society are one of the key factors of the proper activities governing bodies, which are responsible for the particular sport development. It is expedient to find out the main changes in the regulation of the competition, in particular, among the teams of the Premier League of Ukraine on football. Purpose: to find out the differences in the structure and content of the holding competitions regulation among the Ukrainian "Premier League" teams of football during 2012-2018 years. Methods of research: analysis and generalization of scientific and methodical literature; theoretical interpretation and explanation; analysis of documentary materials. Results. The basis for the competition rregulation throughout the period 2012-2018 years is the availability of seven chapters, 70 separate articles and 22 applications. During the study period of 2012-2018 years, the leadership of the Ukrainian Football Federation and the Premier League were carried out by various individuals. The main changes of the regulations structure are related to the following aspects: the addition of Article 68 (Chapter VII), namely, "International matches with the participation of professional football clubs teams"; amendments to Articles 28-33 of Chapter III "Arbitration, Arbitration Observation, Organization of Matches and Security"; the introduction of a new Article 31. "Duties of the UFF Security Officer"; an increase of applications number from 18 to 22. Conclusions. It was revealed that during 2012-2018 years some changes were made as to the definition of the structural and content components of the competition rregulation in the Premier League of Ukraine on football. The key changes, which reflected in the current regulation (2017/18) relate to the conduct of international matches involving professional football clubs teams, separate principles of arbitration and security arrangements for matches.

Professional sport have been developing dynamically in the last few decades. This is evidenced in particular by the growth of its income. The last one is directly related to a quality product produced by a professional sport – a spectacular competition. In particular, in the last few decades, the system of competitions in professional sport has acquired an updated form, significantly changed both quantitative and qualitative indicators of it held. Purpose. To identify key factors in the organizational effectiveness of modern competition systems in professional sports (for example, North American (NFL, NBA, NHL, MLB, MLS), European (UEFA, FIBA / ULEB) and global organizations (ITL/ATP, PGA)). Methods: data analysis and generalization; theoretical interpretation and explanation; analysis of documentary materials, system analysis. Results. Modern systems of professional sports competitions in North America (NFL, NBA, NHL, MLB, MLS) operate according to similar rules. Changes within these systems today are primarily due to public demand. In some leagues (NFL, NHL, MLS,) there has been and continues to be an expansion of teams. In fact, all of these organizations today focus on competitions and in the international sports arena, although until recently the domestic market was more important for them. Due to the development of technology, the leadership of the leagues is increasingly focused on the e-sports market. They develop their own competition systems in a virtual environment and use the latest technologies in conducting and broadcasting real matches, bringing the viewer and the player closer. In Europe, organizations such as UEFA, FIBA/ULEB are also experimenting with changes in the number of teams (increasing in some and decreasing in other competitions) and the format of key tournaments. The professional sports organizations such as ITL/ATP and PGA also impresses with the number of tournaments today. In addition, these organizations are characterized by unique systems of competition, which were also formed as a reaction to external factors (economic, social, informational, etc.). Conclusions. The key factors of organizational efficiency of modern competition systems in professional sports are the level of economic development, technology and information spheres, the level of interest of the international community in kind of sport, the social position of leagues, and most importantly today - development in a pandemic condition.