Types of tennis There are several models of tennis balls

Men's and Women's Singles, Men's and Women's Doubles, Mixed Doubles---, ITF Tournaments, ATP and WTA Tour Grand Slams.

There are three models of tennis balls. One is a normal match ball, and the other two are pressurized and unpressed. Tennis court.

On the outside of the ball is generally required to be made of textile material.

Uniform wrapping, white or yellow color, seamless thread marks at the seams. The diameter of the tennis ball should be between (and cm) and the weight should be between 2 ounces (grams) and 2 1 6 ounces of paeming (grams).

Tennis is a type of ball game.

It is usually played between two singles players or two pairs, and the players hit the tennis ball with a tennis racket across the net on the tennis court, and tennis is an important tool in tennis.

Tennis balls are generally made of rubber, twine, animal hair, polyethylene orange fibers and other materials, and the color is white or yellow, but there are also green. The better the performance of the tennis ball, the thinner the rubber inner wall, the finer the twine fiber, the higher the animal hair content, and the lower grade is the opposite, you can buy according to the actual needs.

When you buy a tennis ball, you should focus on checking the appearance to see if there is a stain on the spherical surface, whether the color is consistent, whether there is a clumping phenomenon, whether the embedded line is uniform, whether there are loopholes in the suture, and whether the size and weight of the tennis ball meet the standards.

The product quality of big brands is often guaranteed, the after-sales service is better, the positioning is reasonable, and the national supervision is relatively strict. For durability and safety, it is best to choose tennis balls made by regular manufacturers.

There are three types:

1. The unpressed ball used in the game at an altitude of 4,000 feet (1,219 meters) above sea level, in addition to the bounce height between 53 inches (cm) and 58 inches (cm), the internal pressure of the ball should be approximately equal to the external air pressure, and can be maintained at the altitude of the designated playing field for more than 60 days, and other aspects are exactly the same as the above description, this kind of ball is often referred to as a zero pressure ball or no pressure ball.

2. Booster balls used in games at an altitude of 4,000 feet (1,219 meters) above sea level, where the balls bounce at a height of 48 inches (centimeters) and 53 inches (centimeters) and so that the internal pressure of the ball is greater than the external air pressure, this kind of ball is often referred to as a booster ball.

3. The diameter of the tennis ball is between (and centimeters) and the weight is between (and grams). Weigh between 2 ounces (grams) and 2 and 1 6 ounces (grams). When free-falling from a height of 100 inches (254 cm) to a concrete floor, the height of ** should be between 53 inches (cm) and 58 inches (cm);

When 18 pounds (kg) of pressure is applied to the ball, the inward elastic deformation should be between inches (cm) and inches (cm), and after compression** the range of deformation should be between inches (cm) and inches (cm).

There are 3 types of tennis players, which are:

1. Bottom-line players.

It belongs to the bottom line, and the ability to smash the forehand and hold is relatively strong, and the physical strength is also very abundant, and it can often hit a beautiful crossing good ball or an outsidein with high technical difficulty when forced.

2. Serve net players.

This type of player Zhenghui generally has an excellent serve and a strong serve, and after a successful serve, he quickly uses techniques such as chipping to transition to the front of the net, and is very good at handling volleys and high-pressure balls in front of the net.

3. Comprehensive players.

Relatively comprehensive style of play, the bottom line and the front of the net are good, the first two styles of play can be combined, and the flexibility is high and can be adapted.

Three kinds. Except that the first is a normal match ball. In some special playing conditions, it is necessary to use special spheres to play.

If the game is played at an altitude of 4,000 feet (1,219 meters), two other special balls are required.

1. Pressurized ball: The first is to make the internal pressure of the ball greater than the external air pressure in addition to the bounce height between 48 inches (cm) and 53 inches (cm), and the other aspects are exactly the same as the above description, this kind of ball is often called a pressurized ball.

2. Unpressed ball: In addition to the bounce height of the second type of ball to be between 53 inches (cm) and 58 inches (cm), the internal pressure of the ball should be approximately equal to the external air pressure, and it can be maintained at the altitude of the designated playing field for more than 60 days, and other aspects are exactly the same as the above description, this kind of ball is usually called zero pressure ball or no pressure ball.

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Tennis balls are soft and hard, and different businesses have different pasting materials on the surface. Most of them are made of polyester and rubber. The main difference is the air pressure, the professional game ball is high air pressure, fast, and it feels hard and crisp to play, while the training ball, especially for beginners and general level players, is best used to use the training ball, the material is softer, the air pressure is lower, the speed is slow, and it is used to cultivate the movement awareness of beginners.

It is best to use the ball according to your own situation, otherwise it is easy to cause unexpected effects, such as action deformation.

Three kinds. Laterite, hard and grass. .1. Grass pitch and artificial leather surface The surface of the field is one. It is also used for the ground layer of the tennis court, which is a kind of on-site pouring and scraper making material, and it is paved at one time with color separation.

There are three types of tennis courts: clay, hard, and grass.

It is mainly divided into men's and women's singles. and men's and women's doubles. Modern tennis has developed four types of courts, clay, grass, hard and carpet.

The rules are unified. However, there are differences in the format of the tournament, and the general ATP (Professional Men's Tennis Tour) and WTA (Professional Women's Tennis Tour) are best of three sets. However, if the tournament is a four-slam tournament, the men's match will be best-of-five in five sets.

Tournament Singles Draw Seeded Doubles Draw Seeded.

Grand Slam tournaments 128 32 64 16

Masters (Crown) 64 (Miami seems to be 96) 32 32 8

Tour 32 16 16 4

All tournaments have to be played in qualifiers, and qualifiers also have ranking restrictions.

It's not necessarily the seed that gets a first-round bye.

But generally speaking, there are no first-round byes in Grand Slams, the Masters are seeded byes, and the Tour is the top 8 seeds.

Is there a model for tennis.

I just know that there are different models for venues and shots.

I really haven't heard of tennis balls and there are models.

According to the level score, tennis matches are mainly divided into:

Men's (ATP): Challenger Tournament, Tour, Masters, Grand Slam, Davis Cup, Grand Final.

Women's (WTA): ITF125K and below, International Tour, Superseries, Crowns, Super 5, Grand Slam, Grand Finals.

According to the field, there are mainly hard court, red clay and grass competitions;

Other events that do not have points are such as exhibition matches, Olympic Games, etc.

According to the material of the ground of the site, it is divided into grass field, red clay field and hard field field.