Just maybe, in the latter half of G3 when Sindhu was visibly tiring (she can be seen holding her legs at some point), GJ should have just move her all over the court until her opponent's legs are wobbly and hands shaky; in other words, simply keep the shuttle in play for as long as possible until her opponent gives way from fatigue since GJ herself is less fatigued. Just what-if, if-only, don't take me seriously. Such a pity for Gu Juan, so near yet so far. Hope it isn't a painful lesson for her and that she emerges stronger than ever from hereon. The same for the other SIN WS and WD such as Liang Xiaoyu, Xing Aiying , Chen Jiayuan, Yao Lei and Vanessa Neo, Fu Mingtian and Sari. All the best.