An accomplished athlete may choose to compete as an amateur if her sport does not have a thriving professional organization. Some athletes can make a living in amateur sports because victories in high-profile amateur events can lead to advertising deals and other business opportunities. Restricted competition includes elementary school, high school, and college athletics. Sports on these levels are controlled by athletic conferences, associations, and leagues connected to high schools and colleges. Athletes in restricted competition must be eligible to play.
Eligibility is determined by conferences, associations, and leagues formed by the schools.
Unrestricted competition is open to all amateur athletes, with some qualifications. The Olympics is an example of unrestricted competition. Although only a select few amateur athletes are chosen to represent the United States, any person may seek entry into this elite group by entering recognized contests in the years before the Olympiad and qualifying for tryouts. Whether an athlete is eligible to compete in amateur events depends on the rules of the governing conference, league, or association. Many events formerly reserved for amateurs, such as the Olympics, were opened to professionals in the 1980s and 1990s.