Tennis Court Lines Rules. In doubles, players get access to the full 36 feet of court. These two lanes are commonly called doubles alleys.
• 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. A valid serve must occur from the serving court before the second gallery line, and hit the service penthouse before dropping in the receiving court, marked by the service line and fault line.corresponding chase lines extend from the centres of the side galleries on both service and hazard ends, including the first, door, second and last. These two lanes are commonly called doubles alleys.
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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. These are the basic rules of it scoring. Even if you specialize in doubles, you need to know where the service boxes and the baselines are. Every two games players change ends so you would be playing from the other side of the court.