Tennis - a sport in which two players compete either ("odinochnayaigra") or two teams of two players ("doubles"). Challenge opponents is using rackets to send the ball to the opponent so that he could not reflect it.
In modern tennis is the official name of "lawn tennis" (English. Lawn - lawn) to distinguish it from real tennis - the older variety that is played indoors and on a completely different type of court. Tennis is an Olympic sport.
In tennis is played on a rectangular court with a smooth surface and markings Damage - court. There are different types of coatings tennis courts: grass, ground, hard, or synthetic carpet. Type of coverage affects the bounce of the ball and the dynamics of movement of players, so the strategy games on the courts with different coatings can be radically different.
For hitting the ball a player uses a racket that consists of a handle and a rounded rim with strung. String surface is used for striking the ball. Racquet frames originally made of wood, now - because of the complex composites consisting of ceramics, carbon and metals.
Strings for tennis rackets are synthetic (nylon, polyester, Kevlar) and natural (made from animal intestines). Previously it was thought that the natural characteristics of the strings are best for the game, but modern synthetic strings to compare the characteristics of a natural. In addition, natural strings expensive, susceptible to moisture, less durable and require delicate care. Stringing produced on special machines, sometimes manually.
The tension of the horizontal and vertical strings are usually different, and the horizontal pull on the string is less than 2 kg. Standard on the new stretch of 26 racquets at 24 kg. The stronger the stringing, the easier it is to control the ball at impact, but the force of the impact is less. The weaker the stretch, the easier it is to disperse the ball, but less control. Thin strings pull with less effort, their use improves ball control, but they are less durable. In many ways, the quality of the string depend on its structure.
For the game uses a hollow rubber ball covered with felt, painted in bright colors, with applied two curved lines characteristic shape. The most common defense with pressure, but there are no internal pressure balls made of tougher rubber for better rebound.
Rules of the game.
Players (teams) are on opposite sides of the grid. One of them is the ball feeding and enters the game, generates pitch. The second player - receiving feed. The player's task - to guide the ball strikes the racket to the opponent, getting the ball at the same time within the boundaries of the court. The player must catch in turn hit the ball until he touched the court more than once. The player who made the mistake of losing a rally, and his opponent scores a point.
Players will need to earn points for wins games. Typing game, one player wins the set. To win the game, you need to win 2 of 3, or 3 out of 5 sets. Once a player reaches the required number of sets won, the match is completed.
In official matches is always a judge, who for a better view of the court sitting on the dais - the tower, so it is called a judge on the tower. The judge has an absolute right to make decisions and to challenge them in tennis is considered bad form. Umpire may be assisted by line judges, who determine whether the ball has landed within the courts.
Tennis tournaments are usually divided into male and female. Each tournament can participate pre-determined number of players. The most common single competition for men and women, steam rooms for men and women (involves teams of two players of the same sex), mixed doubles (team of players of both sexes). Often tournaments for certain age groups: children, youth, veterans tournaments. There are also tournaments for the disabled.
The largest and most representative tournaments are held within the ATP-tour for men and WTA-tour for women. The winners and participants of the events receive prize money and points, which are constructed on the basis of world rankings for men (rating ATP) and women (rating WTA). Considered the most prestigious Grand Slam tournaments, which include the Australian Open, French Open, Wimbledon and United States Open Championship.
Also held tournaments of the national teams of men - the Davis Cup, and of women - Federation Cup. Biggest tournament hosted in Russia - Kremlin Cup.