servicelines. On each side of the net, the area between the serviceline and the net shall be divided into two equal parts, the service courts, by the centre serviceline. The centre serviceline shall be drawn parallel with the singles sidelines and half way between them. 

Each baseline shall be divided in half by a centre mark, 4 inches (10 cm) in length, which shall be drawn inside the court and parallel with the singles sidelines. 

• The centre serviceline and centre mark shall be 2 inches (5 cm) wide. 

• The other lines of the court shall be between 1 inch (2.5 cm) and 2 inches (5 cm) wide, except that the baselines may be up to 4 inches (10 cm) wide. 

All court measurements shall be made to the outside of the lines and all lines of the court shall be of the same colour clearly contrasting with the colour of the surface. 

No advertising is allowed on the court, net, strap, band, net posts or singles sticks except as provided in Appendix IV. 

In addition to the court described above, the court designated as “Red” and the court designated as “Orange” in Appendix VII can be used for 10 and under tennis competition. 

## Note: Guidelines for minimum distances between the baseline and backstops and between the sidelines and sidestops can be found in Appendix IX. 

## 2. PERMANENT FIXTURES 

The permanent fixtures of the court include the backstops and sidestops, the spectators, the stands and seats for spectators, all other fixtures around and above the court, the chair umpire, line umpires, net umpire and ball persons when in their recognised positions. 

In a singles match played with a doubles net and singles sticks, the net posts and the part of the net outside the singles sticks are permanent fixtures and are not considered as net posts or part of the net. 

## 3. THE BALL 

Balls, which are approved for play under the Rules of Tennis, must comply with the specifications in Appendix I. 

The International Tennis Federation shall rule on the question of whether any ball or prototype complies with Appendix I or is otherwise approved, 

