Which partner was NOT among Lee's world no. 1 pairings?
Ko Sung-hyun
Han Sang-hoon
Jung Jae-sung
Yoo Yeon-seong
Answer
**Yoo Yeon-seong** was not among Lee Yong-dae's world number 1 pairings because Lee reached the top ranking with two other partners: Jung Jae-sung and Lee Hyo-jung. They dominated men's doubles badminton from 2005 to 2012, winning numerous major titles, including the 2008 Olympic gold.
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