Summer Olympic Games drug tests. Despite splendid drug-free performances by many individuals, the number of people who failed screenings for performance-enhancing chemicals overshadowed the games. The 1992 Barcelona Games featured the admittance of players from one of the North American top leagues, the NBA, exemplified by but not limited to US basketball's "Dream Team". The 1992 games also saw the reintroduction to the Games of several smaller European states which had been incorporated into the Soviet Union since World War II. These games also saw gymnast Vitaly Scherbo equal the record for most individual gold medals at a single Games set by Eric
Olympic Games by 44 cities in 23 countries, but by cities outside Europe and North America on only eight occasions. Since the 1988 Summer Olympics in Seoul, South Korea, the Olympics have been held in Asia or Oceania four times, a sharp increase compared to the previous 92 years of modern Olympic history. The 2016 Games in Rio de Janeiro were the first Olympics for a South American country. No bids from countries in Africa have succeeded. The United States has hosted eight Olympic Games, four Summer and four Winter, more than any other nation. The British capital London holds the distinction