Lin Dan got to be careful, just playing enough to win for whatever reasons in the early rounds, conserving energy being one of them, may, if not handled properly due to changing playing conditions or opponents playing above themselves without any burden,unexpectedly backfire.
IMHO, it's better to try and take G1 first before slowing down to the opponent's pace. Losing the 1st set would give the opponent a boost in confidence and momentum which means Lin Dan must work harder, make fewer mistakes and not be unlucky, such as the opponent's once too often luck of the net cord and favourable linecalls, to win the next two sets decisively.
So far, in each of his previous tournaments,from the CHN Masters to the BAC and the Thomas Cup, he had faced opponents who stretched him quite a bit. Don't forget, most of his opponents have nothing to lose but everything to gain.
Unlucky for Xue Song whose promotion to the main draw pits him against none other than Lin Dan. It'd be better for XS to play the qualies and go on to face P Kashyap in R1 then followed by K Momota or JOJ, should he survive, before meeting his illustrious senior in the QF.
LXR had better warm up fast as AY ,having played two matches in the qualies, would have settled in by then. LXR definitely cannot afford to play an error-filled game, her glaring weakness, in my humble opinion, is still basically hitting too many sliced dropshots into the net. AY with her excellent court coverage and good stamina,as well as exhibiting cool and calm demeanour, can frustrate many attacking players who aren't on top of their game.
The other match I'm looking forward to, apart from the YX-PVS one which is gone, is the Liu Xin vs Intanon face-off tomorrow - if only there's livestream available.