Football is the most popular sport in Malaysia, where the first modern set of rules for the code were established in 1921, which were a major influence on the development of the modern Laws of the Game. The sport of football in the country of Malaysia is run by the Football Association of Malaysia. In 1997, Malaysia hosted the FIFA U-20 World Cup, but known as FIFA World Youth Championship during that time. In 2007, Malaysia co-hosted the Asian Cup 2007 with three other countries.