How to play against a left-handed badminton player — every spatial pattern is mirrored, so the backhand corner moves to your right, the smash arcs curve the other way, and the doubles middle shifts shape. The practical adjustment: target the reversed backhand corner deliberately, re-read every cross-court angle for the first game, and recalibrate 'attack the woman' geometry in mixed where forehands flank the centre differently. The lefty advantage is mostly a first-game advantage, and most opponents never adjust.