For those who need help, here are some badminton tips:

The best way to counter a chop is to serve full court.
The best way to counter a trick shot is to wait for the shot to be played before moving
Another way to counter a trick shot is to play a fast shot or a spinning net shot.
The best way to counter a punch is to punch back or to bring the ball down.

This comes from experience dudes and it works =D.