Badminton goes to 21 points. Each serve must go over the net and hit the opponent's service court. It cannot bounce on the court as is accepted in tennis. If there is a 20-20 tie, the game goes until one side gains 2 more points and reaches 22.
Size of Court
For playing singles, a badminton court must be 44 feet long by 17 feet wide. For doubles, the court is 4 feet long by 20 feet wide. Usually one court is created of 44-by-20 ft, with painted lines signifying singles and doubles fault lines.
Height of Net
The net needs to be 5 feet, 1-inch long on the corners attached to the poles. It must be 5 feet in the center.
Depth of Net
The actual net itself should measure 2 feet, 6 inches high when extended between the two poles. It needs to be supported by a rope, cord, or cable.
Nets may be made out of nylon, vinyl and other natural and synthetic (like polythene) cords. The cords should be between 15 to 20 mm thick.