Baseball Hardware Requirements

field
The baseball field is shaped like a right angled fan, and the soil quality is required to be soft. The interior of the official competition field is made of soil, while the exterior part is made of grass (there are also courts that are all made of grass, but the running route must be made of soil). The field should be arranged with a receiving area, a batter area, a running instructor area, a running limit line, a preparation batter area, a game effective area (field pass line), a home run hit line, and a grass line.
The distance between bases on each side of the infield is 27.43 meters. The distance between the center of the forward edge of the pitching board and the sharp corner of home plate is 18.44 meters. A range of no less than 18.29 meters behind home plate and beyond the lines on both sides is an effective playing area outside of bounds. The length of the lines on both sides should be at least 97.54 meters. The distance between any point of the top connecting line on both sides and the sharp corner of home plate should not be less than 97.54 meters.
A rear blocking net should be installed at 18.29 meters behind the sharp corner of home plate. The net is over 4 meters high and over 20 meters long. A fence should be set up around the site, with a height of more than 1 meter.
ball
The ball of baseball is usually made of circular cork, rubber, or similar materials with a center, wrapped in hemp thread, and then tightly sewn with two pieces of white horse or cowhide. The weight of the ball ranges from approximately 141.8 grams to 148.8 grams, with a circumference of 22.9 centimeters to 23.5 centimeters. The spherical surface should be smooth and smooth. There are two types of balls: hard and soft. Hard baseball balls can be divided into two types: horsehide and cowhide, but now both professional and amateur baseball balls are made of cowhide. The hard ball requires a small core made of wooden pegs, rubber, or similar materials, wrapped in thread, and the surface is made of two pieces of white horsehide or cowhide firmly sewn together. Soft balls are made of rubber and can be divided into five types: A type, B type, C type, D type, and H type. Type A is a regular pinball, while Type B, C, and D are elastic balls specifically designed for use by teenagers. The H-type is a quasi hard ball with filling inside, and its elasticity is softer than other types of balls. The method for measuring elasticity is to freely fall from a height of 4 meters towards the marble ground, with a rebound height of 1.4 meters being the appropriate choice.
baseball bat
The ball bat is cylindrical and is made by bonding a whole or more pieces of wood. When bonding wood, the grain should be consistent and only adhesive should be used. The surface of the rod must be smooth and have no cross-sectional joints. The length of the rod cannot exceed 1.07 meters, and the diameter of the thickest point cannot exceed 7 centimeters. Professional athletes who use a bat made of a combination of metal, wood, or bamboo must obtain the approval of the referee before using it. In addition, the depth of the concave part of the concave head ball bat must be within 2.5 centimeters, the width must be within 5.1 centimeters, and not less than 2.5 centimeters. The cross-sectional part of the concave part must be bowl shaped and must not be attached to any other substance. In addition, no special processing is allowed to improve the elasticity or performance of the bat, and colored bats cannot be used in matches without the approval of the association. Amateur and high school baseball players can use metal bats.
clothing
Members of the same team should wear uniform competition clothing in a neat and consistent style and color. The back of the competition clothing top should have a clear number of no less than 15.2 centimeters, and the numbers of the top and pants should be consistent. The sleeve length of the competition clothing varies depending on the physique of each team member, but the length of the two sleeves must be roughly the same, otherwise they cannot participate in the competition. Members of the same team should wear inner shirts of the same color. Members other than pitchers can mark, number, text, and badge on their shirt sleeves. Players are not allowed to decorate their competition clothing with decorations that are different in color from the competition clothing. There must be no imitation or reminiscent of anything resembling the shape and style of a baseball on the competition uniform. It is not allowed to sew shiny buttons or metal ornaments and glass products with light on clothing. In addition, except for the running base instructor and the pitcher who serves as the running base instructor, no other team members are allowed to wear jackets to participate in the competition.
glove
Baseball gloves can generally be divided into: receiving gloves, pitching gloves, first baseman gloves, and dividing gloves according to their functions.
Gloves for taking over: It is a mitten used for taking over. The weight of gloves is not limited. Its circumference shall not exceed 96.5 centimeters, and its upper and lower ends shall be within 39.4 centimeters; The upper edge of the tiger's mouth is within 15.2 centimeters long and the lower edge is within 10.2 centimeters long. The tiger's mouth can be sewn with a whole piece of leather or woven with leather strips, but cannot be woven into a net pocket shape. The upper part of the web connection between the thumb and index finger should not exceed 17.8 centimeters, and the length from the upper part to the mouth of the tiger should be within 15.2 centimeters.
Pitcher gloves: The specifications and construction of pitcher gloves are basically the same as those of receiving gloves, but the difference is that the gloves used by pitchers, including leather strips, stitching, and fingertips, must be of the same color and must not be white or gray. There must be no decorative items on the gloves that do not match the color of the gloves.
First baseman gloves: The length of the upper and lower ends of the dividing or connecting gloves used by first basemen shall not exceed 30.5 centimeters, and the width of the upper part of the palm surface shall not exceed 20.3 centimeters; The upper edge of the tiger's mouth is within 10.2 centimeters, the lower edge is within 8.9 centimeters, and the upper and lower edges are within 12.7 centimeters. The weight of first baseman gloves is not limited. In addition, first base gloves should not be processed into mesh bags.
Finger gloves: Any team member can use finger gloves. The size of the glove should not exceed 30.5 centimeters from the top of the four fingers, through the palm, to the bottom of the glove. The width of the glove is limited to a length of no more than 19.7 centimeters from the inner and lower ends of the index finger to the outer edge of the little finger. The weight of gloves is not limited.
protective clothing
Protective gear generally includes caps, face protectors, chest protectors, and leg protectors. Baseball games require players to wear baseball helmets when hitting the ball. Players other than professional baseball must wear a helmet with double ear protection when hitting the ball; The receiver must wear a helmet, face and chest protection, and leg protection when in position for defense. Amateur baseball batters and runners should wear helmets, while batters and runners must wear helmets with double ear protectors. Caddies also need to wear helmets.