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When the political complaints against the International Badminton Federation were resolved, Yao and Sun won men's doubles at the 1981 World Games in Santa Clara, California, the first major IBF sanctioned tournament in which China's players participated.
Founded in 1934 as the International Badminton Federation with nine member nations (Canada, Denmark, England, France, Ireland, Italy, Netherlands, New Zealand, Scotland and Wales), the BWF has since expanded to 176 member nations around the world.