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Double break point: A situation where the receiver has two consecutive break point opportunities in game, or a score of 15–40. Double break (or double-break): An advantage of two breaks of service in a set. Double fault: Two serving faults in a row in one point, causing the player serving to lose the point. [52]
A foot fault takes place when the server assumes an illegal position while serving. The server's feet may touch only the ground behind the baseline, between the extensions of the center line and the sideline. The server's feet must not touch the baseline or the extension of the center line or sideline at any time before the ball is struck.
In tennis, if the serving player makes two mistakes in the same point, it is called a double fault, and they lose the point and the point is awarded to their opponent. [ 1 ] Amateur Era singles records
A serve (or, more formally, a service) in tennis is a shot to begin the point. The most common serve is used is an overhead serve.It is initiated by tossing the ball into the air over the server's head and hitting it when the arm is fully stretched out (usually near the apex of its trajectory) into the diagonally opposite service box without touching the net.
Two consecutive faults (double fault) result in the receiver winning the point. The receiver must allow the serve to bounce once before returning it, or else the server automatically wins the point. If the ball touches the net during an otherwise legal serve ("let" or "net" service), the serve is retaken without being counted as a fault.
Visually impaired tennis (also known as blind tennis in Japan, its country of origin, and as sound tennis in some parts of the world) is competed in 4 types of classification where the B1 (blind) group requires players to wear a blindfold and utilizes special balls, which make a sound upon contact with the court. [4]
The system, which must be activated by the service line umpire before each serve, projects five or six infra-red horizontal beams of light along the court 10 mm above the ground. One beam covers the good (short) side of the service line and others cover the fault (long) side.
Australian Doubles and the I-Formation are variations of up-and-back strategy. In Australian doubles, the server's partner at net lines up on the same side of the court, fronting the opposing net player, who serves as a poaching block and blind. The receiver then must return serve down the line and is liable to have that return poached.