鄭在成
In August, Lee Yong-dae participated in the World Championships in [Hyderabad, India. Unfortunately, in the mixed doubles, he and Lee Hyo-jung, who were the first seeds, lost to Thomas Laybourn and Kamilla Rytter Juhl of Denmark in the semi-final, who later became the champions. He had a better run with Jung Jae-sung in the men's doubles, reaching the final, but lost to Chinese pair Cai and Fu.