They feature summer and winter sports competitions in which thousands of athletes from around the world participate in a variety of competitions. The Olympic Games, open to both amateur and professional athletes, involves more than 200 teams, each team representing a sovereign state or territory.
Olympic Games, athletic festival that originated in ancient Greece and was revived in the late 19th century. Before the 1970s the Games were officially limited to competitors with amateur status, but in the 1980s many events were opened to professional athletes.