[Edit]The tennis court is a rectangular area sufficiently and have to run to the ball and around the stadium is all there should be a space of at least 60 feet in length, at least 120 feet.
Field [edit] tennis court is a rectangular boundary. And there must be sufficient space around the players can run up to hit the ball. Both the stadium and the surrounding area should be at least 60 feet wide and 120 feet long at least.