Sports are no exception. In 2014, Trump suggested a boxing match between Floyd Mayweather Jr. and Marcos Maidana was fixed. But during the 2012 Olympics, Trump actually rejected the notion that the Olympics were rigged against China.
In a tweet, he accused China of "cooking up conspiracy theories that the Olympics are rigged."
Trump's tweet was in response to a Washington Post article describing how some Chinese state media outlets were pushing the idea of an anti–Chinese conspiracy at London 2012. The claims followed a series of incidents involving Chinese athletes, including the disqualification of two track cyclists and a badminton match–fixing scandal.
It's not the only China–related conspiracy to appear in Trump's Twitter feed. A few months after the 2012 Olympics, he claimed global warming was "created by and for the Chinese in order to make U.S. manufacturing non-competitive."