China's Cai Yun / Fu Haifeng play Jung Jae-Sung / Lee Yong Dae of South Korea in Session 2 of the Men's Doubles semi finals of the Yonex BWF World Championships 2011.
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For full length matches from the 2011 Yonex Badminton World Championships:    • 2011 Yonex BWF World Championships  
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