China's Liu Xiang received the gold medal for the 60 metre hurdles on two occasions after a mix-up over the national anthem.
A bemused Liu was the model of stoicism in the initial ceremony as organisers inadvertently played Chile's national anthem instead of the Chinese.
But he then shook his head as he explained to fellow medalists Allen Johnson and Evgeniy Borisov and organizers what had happened.
An altogether happier Liu took to the podium for a second time ten minutes later to pick up his gold once again, on this occasion accompanied by the correct anthem.