According to ITF, the tennis court should be in rectangular and must be having length of 23.77 meters and a width of 8.23 meters if it is a singles match or a width of 10.97 meters for doubles.
The court is divided along the middle section by the tennis net which is hung by a cord which will be passing over two posts called net posts at a height of 1.07 meter. The height of the net must be 0.914 m at the middle portion, where it should be held down firmly using a strap.
For a doubles match, the net posts must be placed 0.914 meter away from the doubles court on both sides and if it’s a singles match these posts must be placed 0.914 meter away from the singles court on both sides. For a doubles net, then the net must be supported by giving an extra support at about 1.07 m using two singles sticks, which can be placed 0.914 m away from the singles court on both sides.
The net posts which hold tennis nets must not be more than 15 centimeter in diameter. The singles sticks used along with a doubles net must not be having a diameter which is more than 7.5 cm. The lines which are drawn at the ends of the court are called baselines and those lines at the sides of the court are called sidelines.
Two lines which are drawn between the singles sidelines at 6.40 meter away from both sides of the net and are parallel to it are the service lines. On both sides of the net, area between the service line & net should be divided into two equal parts which make up the service courts.
Each baseline must be divided in half by a centre mark, having length of 10 cm. This should be drawn inside the court and must be parallel to the singles sidelines. The centre service line and centre mark should be 5 cm wide. All the other lines of the court must be between 2.5 cm & 5 cm wide, except the base lines which will be about 10 cm wide. All lines of the court must be of the same color clearly contrasting with the color of the surface.