BYDavid Lee SINGAPORE — Loh Kean Yew missed a golden opportunity to earn his second Badminton World Federation World Championships medal as he lost 22-20, 21-18 to unheralded Canadian Victor Lai in the men's singles quarter-finals on Friday (Aug 29). World No. 50 Lai, who was 100th at the start of the year before he became the Pan Am champion in April, is assured of at least a bronze. He was the only unseeded player left in the draw.