Tennis

Rio Olympic 2016 | Watch Olympics Tennis Live 2016

Rio Olympic 2016 | Watch Olympics Tennis

Tennis is a sport played outdoors or indoor courts with racquets and balls for two or four people in different types of surface, such as clay, grass, cement, parquet or artificial turf. When two contestants play is called singles and when are four doubles. A tennis match is composed of games and sets. The first player or team to win six games, provided you keep two of difference from the opposing team wins the set. 

The tennis began as a demonstration sport in the 1988 Olympics, with professional players. From the 1992 Summer Olympics, it is considered an Olympic sport. The modalities are individual male and female, male and female doubles and mixed doubles.

 tennis court

The track, which can be played either singles or doubles matches, is marked with white lines indicating the different dimensions and service areas for single and double. 

The ball is inflated with a compound rubber coated cotton; It is between 6 and 7 centimeters in diameter and weighs between 57 and 58 grams. The racket, which weighs between 397 and 454 grams, is made ​​of wood, aluminum or graphite and other materials; It consists of a head, oval or round with a string of gut or nylon very resistant; the handle is usually covered with a rubber handle or leather. The shoes used on any surface always has to have non - slip rubber sole. Players use light and absorbent clothing, white traditionally although today a colorful increasingly varied takes. 

The game begins with a player serving the ball, ie hitting it over the net to the opponent ’s side according to the rules described below. The player who starts the game at every point is said to be the player to the service, while the player who receives the ball is said to rest. To determine which player or pair served in the first game of a coin is thrown or spun a racket. 

The player serving must strike at the ball from behind the service line (repeating the movement alternately from the right or left after each point) to the service area of the opponent, located on the opposite diagonal side. The player’s feet to the service must remain off the track until it strikes the ball; after throwing the ball in the air, the player must hit before it touches the ground. For each service allowed two attempts. If a service ball touches the net and then boot anywhere on the track of the opponent, except in the diagonally opposite service area, or off the track before launching, is considered to have committed a foul. If faults are committed (double fault) in both attempts, the opponent wins the point. A lack of standing is committed if the player enters the track before completing the service. If the ball in any attempt to service touches the net and then boot in the service area of the opponent, called network (net), and the player is allowed to serve again. A valid service that can not be reached by the opponent is called ace. 

After serving a valid ball, it can be hit any part of the track the opponent, until any player or pair fails return. The point is lost in play when the ball boot twice before being returned, when it sends it into the net without passing on the other side, or when sent directly off the track; in these cases the opponent scores a point. After played the first point, the next service is performed from the left service area of the player taking to the diagonally opposite area, or left side of the opponent; thus, the service alternates until an entire game is completed. The opponent serves the next game and so on to complete a set. In doubles, each peer serves a game turn, serving one of the opponents between each turn. 

The score in a tennis game, when not prolonged by a tie, is a sequence of four points designated as 15, 30 , 40 and game, referring to the absence of points with the term ‘nothing’ (love). A tie at 40 is called ‘equality’ (deuce) and the game continues until one player write down two points in a row. The player with the first of these two points that break the tie, that is, the player is put in a position to win the game with the next point, it is said to have advantage. In a tennis match the player’s score has the service is said first. Typical scores of different phases of a game of tennis can be as follows: 'anything-15’, '30 -15 'and’ deuce ’. During a set side of the track after the odd games is exchanged; this applies both singles matches and doubles. 

Six games win a regular set, but equally that to win a game should have an advantage of at least two points to win a set should be a two or more games and continue playing until this happens.  

When a player or pair have won six games and the other five, the game continues until one wins two games more than the other. However, when both have six games a system called sudden death tiebreaker (tie-break), in which players serve two consecutive times is used; an ordinal numerical score and the first player to reach seven points with a lead of at least two on the opponent applies, is the winner; otherwise, the tie-break continues until a two - point lead is achieved. In competition matches, the winner is the one who gets the most sets of three or five possible. The parties of major championships have fifteen judges. A chair umpire singing plays, helped by an assistant or assistant track, a judge network, two judges for foot faults and ten linesmen