Baseball tickets for the Asian Games

Asian Games baseball tickets: 50 yuan, 80 yuan, 100 Yuan, 200 yuan.

Baseball is one of ball games. It is a competitive event in which the bat hits the ball for offensive and defensive confrontation. Baseball originated in the15th century and was a popular cricket in England at that time. Later spread to the United States.

1839, the first baseball game was held in ancient paston, new york, USA. 1978, the International Baseball Federation was recognized by the International Olympic Committee. 1994, the headquarters of the International Baseball Federation is located in Lausanne, Switzerland. Baseball was included in the Olympic Games in 1992.

Baseball is usually made of round cork, rubber or similar substances, wrapped with hemp thread, and then wrapped with a flat thread to wrap two pieces of white horse skin or cowhide, and sewn tightly.

The weight of the ball is about 14 1.8g to 148.8g, the circumference is 22.9cm to 23.5cm, and the spherical surface should be smooth and flat. There are two kinds of balls: hard balls and soft balls. Hard baseball is divided into horse skin and cowhide. Now both professional baseball and amateur baseball are made of cowhide.

The hard ball is made of cork, rubber or similar material, wrapped with thread, and the surface is made of two pieces of white horse skin or cowhide. Soft balls are made of rubber, which are divided into five types: A, B, C, D and H. Type A is a general middle ball, while type B, C and D are special middle balls for teenagers.

H-shaped balls are quasi-hard, with fillers inside, and their elasticity is softer than other types of balls. The method to measure elasticity is to fall freely from a height of 4m to the marble floor, and the appropriate rebound height is1.4m..

The bat is cylindrical and made of one or more pieces of wood. When bonding wood, the wood grain should be kept straight, and only adhesives can be used. The rod surface must be smooth, without cross-sectional joints. The length of the rod shall not exceed 1.07m, and the diameter at the thickest part shall not exceed 7cm.

If a professional athlete uses a bat made of metal, sawdust or bamboo, he must obtain the approval of the referee before using it. In addition, the depth of the concave part of the concave head rod must be less than 2.5 cm, the width must be less than 5. 1 cm and not less than 2.5 cm, and the cross section of the concave part must be bowl-shaped and cannot be attached with other substances.

In addition, you can't do anything special to improve the flexibility or performance of the bat, and you can't use colored bats in the competition without the approval of the association. Amateur and high school baseball players can use metal bats.