The tennis court seems very big to cover. Could that be an illusion? Is that really real, or a matter of viewpoint?
If you are in the center of the baseline, it only takes three or four steps to get to the side line. A few more steps to get to the corner of the service or to a short ball.
What matters, what can make distances insurmountable, is your idea of the matter.
I’ll give you a better idea. Follow the ball with your eyes and your head. It’s your reflex center.
The head will go, the feet will follow. Don’t worry about your feet. The weight of the head is quite large in respect to that of the body, much more bone dense. It will start you in the direction you want without a thought.
And don’t worry, on tennis courts, you won’t lose your head.
I have never seen the feet stand still and the head roll.
Oscar Wegner, TennisTeacher.com