Keirin is a cycling sport popular in Japan. However, it is virually unknown outside that country. The organisers of keirin wanted to make it more popular. How to do that? By making it an Olympic sport. And how to persuade the Olympic Games to adopt the sport? Maybe a $3 million bribe helped:
Documents given to the BBC suggest that $3m (£1.5m) was paid by organisers of a Japanese cycling event to the UCI – the world cycling body. The payments were allegedly made in the 1990s. The sport, called the keirin, was supported for inclusion into the Games by the UCI, and admitted in 1996.