This paper analyzes the sponsorship on the ATP Tour, where both the sponsors or partners and the ATP Tour itself have a mutually beneficial relationship. The main problem which this paper is defining is that the role of sponsorship in sports today, especially in top tier sport, is an unavoidable segment of development and achievement of competitive and business results. The primary goal of the paper was to analyze sponsorship in sports on the example of the ATP tour. The secondary goal of the paper was to show the deeper connection between sponsorship in sport. Using the method of analysis this paper investigated the emergence of sponsorship in top sport - tennis. The ATP Tour promotes quality through 63 tournaments held in 31 countries. Sponsors and partners participate in the organization of the tournament and help form a prize pool for tennis players. Sports, sports organizations or any segment of the sport benefit tremendously from sponsorship and exploit mutualism in terms of sponsors who receive extremely high and positive visibility and recognition. In this way, by collaborating with partners and sponsors you can ensure the existence and development of a sport, a sports organization or any other segment of the sport, all the preparation for a competitive result.