1 Before serving, the server should stand in the area between the midpoint behind the baseline and the assumed extension line of the sideline, then throw the ball in any direction with his hand in the air and hit the ball with his racket before it touches the ground. As long as the racket touches the ball, the ball is served. When serving, the server shall not throw up two or more balls, otherwise it will be judged as a re-serve. If it is intentional, it will be deducted.
2. Serving time: After the receiver is ready, the server can serve. The receiver is ready even if he makes a gesture of counterattack. If the receiver says that he is not ready after the server hits the ball, even if the ball served by the server does not fall into the service court, it will not be judged as a service error.
3. Serving position At the beginning of each game, the server should serve from the end line of the right area first. Switch to the left zone to serve after winning or losing one point. If the service position is wrong and not found, the score is still valid. Once found, it should be corrected immediately.
4. At the end of the first game, the server becomes the server and the server becomes the receiver. After each game, they will take turns to communicate with each other until the game is over. If there is an error in the service order, it shall be corrected immediately after it is discovered. This round of players serve, and the scores obtained by both sides are valid until mistakes are found. If it is found that there has been a service failure before, it will not count. If the wrong order is found at the end of a game, the subsequent service order will start from the game and rotate according to the regulations.
5. After the odd number of the first, third and fifth games of each set, the two sides exchange venues, and when the sum of the two sides' games at the end of each set is odd (if the sum of the two sides' games at the end of one set is even, the venues will not be exchanged, and the exchange will wait until the end of the first game of the next set). If there is any mistake in changing venues in the normal order, it should be corrected immediately once it is found, and the game will be played in the original order.
6. Service error. If the service foot is wrong, the ball misses, and the service touches the fixture before landing, it will be judged as a mistake.
(1) When serving, the staggered player is only allowed to stand between the midpoint behind the end line and the assumed extension line of the sideline, and cannot touch other areas. It is not allowed to change the original station position by walking or running (if the player slightly moves his feet without changing the original station position when serving, it is not regarded as walking or running). Otherwise, it will be judged as a foot fault.
(2) Players who miss the ball due to overexertion and uncoordinated movements. Call miss when serving. If the server decides not to hit the ball when throwing the ball up, it is not a mistake and will be judged as a repeated serve.
(3) When the fixed singles match is held in the doubles venue, the singles props are used. If the serve touches the singles post and falls into the specified service area, it should be judged as a mistake, because the singles post, the doubles post, the net between them and the white cloth at the edge of the net are fixed objects. 7 legal serve touches the net, the center belt and the white cloth on the edge of the net, and the service that still falls into the opponent's service area is invalid; When legal serve touches the net, the center belt and the white cloth at the edge of the net, and touches the receiver's body before landing or when the receiver is ready, the service is invalid regardless of the success or failure of the service. When re-serving, the previous serve will not be counted, but the original first serve mistake will not be cancelled. 8 points lost in tennis rules, if the following situations occur, you will be deducted: you failed to return to the net before the ball landed for the second time; The return ball touches the ground, fixtures or other objects outside the boundary of the opponent's field; Failed to return the hollow ball; In the course of the game, the player deliberately pats or catches the ball with the ball, or deliberately touches the ball with the racket many times; During the "live ball" period, whether the player's body, racket (whether held in his hand or not) or other objects he wears touch the net, net post, singles post, rope or silver rope, central belt, white cloth at the edge of the net or the ground in the opponent's court; If the incoming ball hits back in the air before crossing the net, it is counted as hitting the ball over the net; Except the racket held in the hand, the player's body or the object he is wearing touches the ball; Throw the racket in your hand to hit the ball; During the game, the players deliberately changed the shape of the racket.
(1) The "live ball" period begins at the time of serving (except for mistakes or re-serving) and ends at the time of judging.
(2) In the tennis doubles match, Team A and Team C serve to Team D, and Team C touches the net before the ball lands, and then the ball lands outside the service area. At this time, C and D should be awarded, because C touched the net before the ball landed outside the service area. There are many situations that cause points to be lost in the game: when serving, the racket flies out of the server's hand and touches the net before the ball hits the ground, and the player should be awarded points (because the racket touches the net when the ball is "live"); When serving, after the ball touches the ground outside the service area, the racket flies out of the server's hand and touches the net, which should be judged as a service error (because the racket has become a "dead ball" when it touches the net); Athletes cross the net to the opponent's field during the "live ball" period and are sentenced to lose points; If an athlete standing outside the service area is hit before the opponent's ball hits the ground, he shall be awarded points; If a player stands outside the court and returns the air ball out of bounds or catches the ball with his hand (unless he returns the air ball as an effective return, the game will continue), he will be deducted. According to the rules of the second serve tennis match, the server has the right to serve twice. After the first service error, the second service should be made at the original service position. If the service position is found to be wrong after the first service error, it is required to serve in another area, but only once again. 10 line pressing ball The line pressing ball refers to the ball that falls on the match line and is counted as a foul ball.
The rules of singles are all applicable to doubles, and the specific scoring rules are international, 15, 30, 40, AD. In order to deepen understanding, it is suggested to look up the encyclopedia and watch more games.