Tennis is a sport in which a rubber hollow ball is hit with a racket through a net.

Tennis originated in England and first became popular among the upper classes of English-speaking countries.

Tennis is played in singles and doubles. Table tennis has its roots in tennis.

Tennis is now an Olympic sport and is suitable for all social classes and age groups.

The rules of the game have hardly been changed since the 1920s.

Tennis is also very well attended, with the four Grand Slam tournaments being particularly popular.

Tennis was formerly a game called "palm play", which was popular at the French court in the 14th century.

The rules involved two players playing against each other across a rope, using their palms to hit a ball made of hair wrapped in cloth.

The game was later developed and refined by replacing the rope with a net and replacing the hand stroke with a wooden racket, which was then strung.

From the 18th century onwards, the game also began to appear in European folklore and became widespread in Europe in the 19th century.

Modern tennis was born in England in 1873, and the first Wimbledon tournament was held in 1877, the earliest in the history of modern tennis.

With the establishment of the International Tennis Federation in 1913, the game became more widespread throughout the world.

There are three main types of court according to material: grass, red clay and hard court. The different surfaces offer different ball speeds and bounces.

There are many types of hard courts, from old-fashioned concrete, indoor wooden floors to artificial grass like astroturf.

Red clay is considered a slow court as the ball bounces relatively high and slow, making it less likely for a player to hit a ball that cannot be returned.

Lineout decisions are relatively easy on red clay as the tennis ball leaves its mark on the surface of the clay court.

Hard courts and grass courts are considered fast courts with fast ball speeds and bottom bounces, making the shots shorter and more powerful, thus giving an advantage to power serve players.

Of the four Grand Slam tournaments, the Australian Open and US Open are hard courts (both initially grass), the French Open is red clay and Wimbledon is grass.

There are techniques to playing tennis, such as overhead shots, which you need to use when another player hits the ball high above your head and your goal is to get the ball to land on your opponent's side.

Hitting a perfect overhead shot moving your footwork alone is not enough, the ball flies in front of you and it flies over like a serve, then treat it like a serve.

When the ball is at the same height as your serve, let it fall as if you were serving it.

A ball over your head will create a powerful force.

Either aim the ball to the right of your opponent or to the other side of the court so that he doesn't have time to hit it.

Tennis balls can be received without hitting the ground, whether on the ground or in the air.

Hitting the ball before it hits the ground is an interception, so that you are very fast when returning to the opponent and take the initiative position, and in singles play most of the tactics are to take the serve to the net.

When the ball is not on the ground, care must be taken not to touch the net, not to go over the net, and the receiver can stand anywhere inside or outside the court line to receive the ball.