JAKARTA:- Arch rivals Lee Chong Wei and Lin Dan remained on course for a blockbuster men's singles semi-final showdown at the world championships when they enjoyed routine third round victories in Jakarta on Thursday. Chinese fifth seed Lin crushed Denmark's Hans-Kristian Vittinghus 21-9 21-13 while Malaysia's Lee was given a more thorough test by Wang Zhengming in his 21-17 21-19 victory. Nearing the end of glittering careers that have seen them dominate the sport for almost a decade, Lee has been impressive since his return from a doping ban but will be all too aware that nemesis Lin blocks his path to glory once more. –Reuters