Yong-dae started the 2011 season with a not-so-satisfying result in the Super Series Finals in Taiwan as he and Jung Jae-sung only became the finalist.
Lee Yong-dae was absence in Thomas Cup due to injury. However, his comeback was successful as he and Jung Jae-sung won the first tournament they play after the injury, Taiwan Grand Prix Gold. The third seeds beat compatriot Cho Gun-woo and Kwon Yi-goo.
Lee Yong-dae started a bright year when he and Jung Jae-sung won the Malaysia Super Series. In Korea Super Series, Lee won the mixed doubles title with Lee Hyo-jung, while he and Jung only became the finalists. However, as Jung had to join the military service for two months, Lee paired with Shin Baek-cheol and claimed the German Open title.
Lee started off 2004 with the French Open International, where he played the men singles, men doubles (with Jung Jung Yong) and mixed doubles (with Kang Hae Won) category. In the Mixed Doubles event, the pair managed to reach the semi-finals, before losing to the Russians.
Lee participated in the OCBC/Yonex US Open, where he played in both the Men Doubles and Singles category. For both events, he was ousted in the second round.
Lee Yong Dae started playing badminton at his local elementary school at the age of 8. His youth club is Samsung Electromechanics. He joined the national badminton team of South Korea in 2003, at the age of just 15 years old.
Lee Yong-dae (Hangul: 이용대; Hanja: 李龍大; born September 11, 1988 in Hwasun, Jeollanam-do) is a male badminton player from South Korea. He is considered by many to be a great talent and already a wonderful doubles player. His current partners are Jung Jae-sung in men's doubles (as of 2006) and Lee Hyo-jung in mixed doubles (as of 2007).