Because your lower body does the exhausting task of moving you from one shot to the next, it is easy to experience “leg lapse”during execution. A leg lapse causes the upper body to compensate for the loss of leverage resulting in a stroke that is off balance. It means your body has an inefficient base of support due to poor footwork or knee flexion.
Fatigue and laziness are the causes of “leg lapse”. The most common “leg lapse” occurs when a shot is wide to either side of the body and you simply “reach” for it instead of moving your feet. The second most common leg lapse occurs when a shot is low and you flex at the waist without flexing the knees. The best way to avoid fatigue and laziness is to condition your lower body.
Beat the ball to the bounce
The difference between getting to the ball on time and being early is the difference between mediocrity and winning. Early preparation allows you to be relaxed and play on balance. There are 2 types of players: Anticipators and Chasers. Anticipators react as the ball leaves the opponents racket and sometimes even earlier. Chasers wait for the ball to get to their side before they react.
Beating the ball to the bounce is the essence of early preparation. You and the ball are in a race and the finish line is the bounce. You want to get to the bounce before the ball does. This is a concept few players understand. Most players move at the same pace as the ball. Great players attempt to move at double the speed of the ball.