The kind and characteristic of tennis court

Today, I want to write about tennis court. Of course I think that you know the tennis court. However, a tennis court has kind and characteristic you do not know. So I will write about kind and characteristic of the tennis court.

~kind and characteristic~

 The kind of the tennis court is distinguished in used material mainly. There are six main tennis courts, they are called omni, hard, clay, carpet, en-tout-cas and glass court each. High speed and bound of ball are different by a court. Let’s explain each court.

(1)  Omni court

Material: Artificial turf with sand      Ball speed: Slow     Bound of ball: Low

 The ball bound as slip and spring is bad. There is relatively little irregular, and is easy to use it very much. There are few burdens to a foot and it is relatively cheap. Furthermore, it is strong in the rain. So it is used by high school tennis club and society tennis club.

(2)  Clay court

Material: Soil      Ball speed: Slow     Bound of ball: High

 The ball jump while slowing down after bouncing. The bound is high. Clay court maintenance is difficult. In the rough clay court, irregular appears one after another. Because the maintenance cost of the tennis court is considerably cheap. So it is used mainly by student tennis club.

(3)  Hard court

Material: Concrete      Ball speed: Fast     Bound of ball: Very high

 The ball bounds very highly. Because the burden to a foot is considerably big, the person with the uneasiness should stop it to a waist. By practicing with this court, I can catch fast balls. Because management is easy, hard court is seen in Japan for rent court.

(4)  Carpet court

Material: carpet     Ball speed: Fast     Bound of ball: Very low

 Carpet court is seen at an indoor tennis school and a relatively rare tennis court. If there are not exclusive tennis shoes, you slip and in danger. Because a ball does not bound, the ball which it is easy to hit comes for the woman. Because it is easy to fall down, you have to careful about steps.

(5)  Glass court

Material: Glass     Ball speed: Very fast     Bound of ball: Low

 The ball jump to slip than Omni court. It is the court of the highest speed. Because of glass exchange, maintenance cost is very expensive. So you can rarely see it. For the high maintenance cost, there is many it in the developed country.

(6)  En-tout-cas court

Material: Porcelain clay     Ball speed: Slow      Bound of ball: High

 It is a rare court made with the powder of the brick. A ball is easy to bound, but stalls after bouncing. There is much irregular. Drainage is good, and the ground is kinder to a knee and a waist than hard court softly. It is used most in France, and the French Open Tennis Championships uses this court.

↓En-tout-cas court

↑Carpet court

 

 

 

 

There are various kinds even if I say tennis court. When all of you will watch a tennis court in future, please pay attention to material.

 

That’s enough for today. See you next week. Bye-bye.

Structure of the world rank

At the Beginning

Today, I will write about professional tournament ranking system. Do you know World Ranking in tennis? In 2012, number-1 ranked tennis player is Novak Djokovic. Then how is it decided? Organizations managing the ranking in men and women are different. It is a group called the ATP(Association of Tennis Professionals) to manage the world ranking of the man. On the other hand, it is a group called WTA(Women’s Tennis Association ) to manage the world ranking of the woman. But the structure of both is the almost same. Now I explain the structure in case of the man.

Ranking system

 The ranking of the man is managed by ATP as I explained it some time ago. Two ranking systems have been used by the ATP to date. They are 「Entry ranking」 and 「Champion’s race」.

First, I will write about Entry ranking. Entry ranking is method to decide Annual ranking in total point of the high rank 19 games that I participated in during the past 52 weeks. Entry of the points will be detailed later. Because this method becomes the average of results of the past one year, even if there is the bad meeting of results, it does not affect ranking at all. So it is unpopular among some players.

 On the other hand, Champion’s race system which began in 2000 is all players start from 0 point. And it is a method that a point is added to every participation meet and decides annual ranking. For example, the player who put a good grade in a meeting to be held at the beginning of the year, he naturally become high-ranking of the champion race in the first half of the age. This system is plain and clear. However, there is too criticism to be short because only the occasional force is reflected by ranking.

Both methods have good points and bad points, too. Entry ranking is used by the singles again as general organization from 2006. In addition, as for the young player younger than 16 years, they limited the number of the meetings that they can participate in the year.

Introduction about points

Well, from now on, I want to explain structure of the entry of the point. The professional tennis players can obtain the point by winning in a meeting of the tennis, but the quantity of the point which to be provided changed by the kind of the meeting to participate in. Look at two below figures. The first figure showed the rank of the meeting. There are many points to get by meeting of the one on the figure. The second figure showed whether several points were provided in each meeting. For example, I can get 180 points if I win to best 4 in a meeting of the ATP500 series. The world ranking makes ends meet by adding up such a calculation for 52 weeks.

 

Next article, I will write about the kind and characteristic of tennis court. See you again!

 

 

 

Beginning of tennis

At the beginning

I think that you have heard the word tennis at least once in your life. But you hardly know about tennis unless you are tennis professional or expert.

So today, I'll write about tennis. Please read it if you interested.

Kind

The tennis is two kinds roughly. About lawn tennis and soft tennis. Lawn tennis is more famous and major than soft tennis. Lawn tennis is said to be “tennis” in Japanese. Soft tennis is said to be “soft tennis” in Japanese.

History

   When do you think the origin of tennis? Actually it is thought that the tennis was played in the 15th century B.C. The first tennis is said to have been played in Egypt. Later years, it reached ancient Roman Empire and France in the 8th century. In ancient Roman Empire, people in Roman made a ball made of the skin with feather spherically. And they aim to a partner and throw it. Then partner beat at it by hand each other. It called “Follis”. Follis was enjoyed in a field. In France, it was enjoyed as noble or monastery plays. Especially in monastery, it is said to have been performed flourishingly. they set a net in a courtyard and the room of the monastery and drew a line, and the game that hit the ball with a hand came to be performed. It was said to Le jeu de paume. After that Le jeu de paume was transmitted to royal family. The tennis (the competition that became the model) was carried out flourishingly here too. It is different from modern tennis in the tennis of the imperial family at the point where a game begins in the place where a servant throws a ball into the court. People who play tennis did not use the racket but use their hand or globe at the time. People have begun to use the racket from the 14th century in Italy. Certainly they started to use the racket, but it is different from the tennis that we go for now. For example, material of racket, ball, court. So I’ll write about when and who started design model of the present tennis.

   It is Walter Clopton Wingfield to have designed modern tennis. He is an officer, and the rank is a major. In December 1873, he held garden party and invited a lot of guest. Then he designed it as entertainment to please a visitor. The characteristic of the thing which he designed is a form of the tennis court. Please look at the bottom. The tennis court which Wingfield designed is form of bow tie type. He tried to take various licenses because he feel possibility of the tennis. But he did not get the license. Although he was not able to take the licenses, the competition of tennis has spread in United State of America and United Kingdom. An official game of the tennis is held in 1877. At this time, tennis almost resembled modern tennis which we know.