QF - MD - KO S.H./YOO Y.S. vs KOO K.K. /TAN B.H. - Yonex BWF World Champs '11 Event Yonex BWF World Championships 2011 Quarter Final Session 1 Date 12 August 2011 Venue London Players Ko Sung Hyun Yoo Yeon Seong 5 vs Koo Kien Keat Tan Boon Heong 4 Category Mens Doubles Welcome...
Ko Sung Hyun.