:dart:Hitting only straight shots at the net makes your shots predictable and doesn't put pressure on your opponent.
:tennis:Standing too close to the net makes it difficult to react to fast shots and limits your visibility.
:raised_hand:Trying to play a winning shot too early often leads to mistimed shots and mistakes.
:badminton:Keeping your racket down by your ankles slows down your reaction time and makes you look less threatening.
:muscle:Not changing between grips quickly enough can result in mistimed shots and missed opportunities.