Squash Tennis Rules
The squash tennis ball is similar to a lawn tennis ball, but is somewhat smaller. Its diameter is 2 3/8 to 2 1/2 inches and it weighs is 2 to 2.06 ounces. It is inflated to a pressure of 34 pounds and is covered with webbing. The racket is similar to a lawn tennis racket, but is slightly smaller.
The court is 32 1/2 feet long by 17 feet wide. The center line, which runs from the front wall to the back wall, divides the court into two equal sections. A short line, sometimes known as the service-court line, is drawn across the court 22 feet, 6 inches from the front wall.
The ceiling is 18 feet or more above the floor, but is out of play. A play line on the walls is 14 feet above the floor on the front wall and along each side wall to the service-court line; 12 feet above the floor on the side walls behind the service-court line; and 4 feet, 6 inches above the floor at the back wall. The ball is out of play if it strikes a wall above this line.
A "telltale" of sheet metal, 21 inches high, stretches across the base of the front wall. A service line, or cut line, is drawn across the front wall at a height of 6 feet, 6 inches.
The server must stand behind the short line, near the center line, and the serve must hit above the service line and land in the area in front of the short line to be valid. The service may not be volleyed for return, it must be hit on the bounce, and one fault results in loss of point.
Other rules are the same as in squash racquets.