The main idea of defensive shots are more about finding the gap wherever it might be and to deceive your opponent fora weak reply or with a no reply.
If the smashers are able to smash striaght, they can easily cover these shots. so, straight shots, are best defensive when played cross court.
Lifts should always be played to a corner and never to the middle. If you lift
to the middle, then they will smash down the middle, making it almost impossible for you to find an effective reply.
Always lift the shuttle away from your opponent, so that he moves to play a shot. If you lift to the same corner each time, it’s much easier for him to get into a good smashing position.
Always, the straight defender should play cross court drives, and the cross court defender should play straight drives. In both these cases, the defender must be aware of the opponent standing in the front. He must be careful not to allow the front attacker to intercept the drive. However, a straight drive to the opponent’s backhand can be safer than a cross court drive to his forehand. Always remember to play the drives away from the front defender. Drives are usually best played straight.
Unlike drives, blocks to the centre can be effective, because it limits his possible net shot angles and you may be able to cover all his net shot replies.
The cross court defender should almost always play his net shots straight.