On August 26th, top Hallyu stars BoA, Super Junior, KARA, Kim Jang Hoon, and Park Jung Hyun put on performances to celebrate the opening ceremony of the 2011 Daegu IAAF World Championships. 1,945 athletes from 202 countries have gathered in South Korea's 4th largest city of Daegu to compete in various athletic events. The championships will be held from August 27th to September 9th. Check out some of the performances below! Source: Nate Photo: mydaily