"not completely halting the use of new technology in equipment design. Until 1990, it was permissible to use balls of less than 1.68 inches in diameter in tournaments under the jurisdiction of the R&A, which differed in its ball specifications rules from those of the USGA. This ball was commonly called a ""British"" ball, while the golf ball approved by the USGA was simply the ""American ball"". The smaller diameter gave the player a distance advantage, especially in high winds, as the smaller ball created a similarly smaller ""wake"" behind it. When a golf ball is hit, the impact, which"
"a circumference (end to end) of 740–770 millimetres, and a circumference (in width) of 580–620 millimetres. It is made of leather or suitable synthetic material and may be treated to make it water resistant and easier to grip. The rugby ball may not weigh more than 460 grams or less than 410 and has an air pressure of 65.71–68.75 kilopascals, or 0.67–0.70 kilograms per square centimetre, or 9.5–10.0 lbs per square inch. Spare balls are allowed under the condition that players or teams do not seek an advantage by changing the ball. Smaller sized balls may also be used in"
"measurements for the ball shall include the following: The ball shall be of white, yellow, or orange solid rubber. The ball may measure between 7 3/4 and 8 inches in circumference. The ball may weigh between 5 and 5 1/4 ounces in weight."" Beginning with the 2014 season, all three governing bodies for lacrosse in the United States (US Lacrosse, NFHS, NCAA) have mandated that only balls meeting the NOCSAE ball standard may be used for competition. Balls must be emblazoned with the words ""Meets NOCSAE Standard"" in order to be deemed legal for play by game officials. Starting no"
"of the surface of the ball, known as the ""cover stock,"" while mass distribution is determined by the shape and size of the core. The USBC and FIQ specifies that bowling balls may only be made from uniform, solid materials with a density less than or equal to 3.80 g/mL. The weight of the ball must not exceed , with no lower bound for weight. The hardness of the ball must be at least 72, as measured by a Type D Shore durometer at room temperature (68-78 degrees Fahrenheit). A ball may have a circumference between and , and a"
"off center without falling. The pins must show the name and mark of the maker, either ""USBC Approved"" or ""BTBA Approved"" and appear uniform. The maximum diameter of the ball is and the circumference of the ball must not be more than , and the ball cannot weigh more than 16 pounds (7.26 kg). Generally, the lightest ball available for use is 6 pounds (2.72 kg). The ball must have a smooth surface over its entire circumference except for holes or indentations used for gripping the ball, holes or indentations made to bring the ball back into compliance with weight-distribution"
"320-350 g (females) and 350-380 g (males). Its scope must be 65–68 cm, and its air pressure from 0.55 to 0.75 bar. It is thus as hard as a soccer ball (0.6-0.7 bar) and harder than a volleyball (0.29 to 0.32 bar). In physical size, it is similar to a soccer ball or a volleyball. The right to select the game ball is determined by lot before the game and replaced after each set. Increasingly, uniform balls are outlined and provided by the organizers to ensure equal opportunity for all teams participating at international championships. The ball can often be"
"field are: length 180 to 220 m (196.9 to 240.6 yd), width 80 to 90 m (87 to 98 yd). The ball is made of leather, with an inflated rubber chamber and six leather handles. Its diameter is 40 cm (15.7 in) handle-to-handle and its weight is 1050 to 1250 g (2.3 to 2.8 lbs). The player that has control of the ' (i.e. holds the ball by a handle) must ride with his right arm outstretched, offering the ' so rival players have a chance of tugging the ' and stealing it. Not extending the arm while riding with"
"Baseball (ball) A baseball is a ball used in the sport of the same name. The ball features a rubber or cork center, wrapped in yarn, and covered, in the words of the Official Baseball Rules ""with two strips of white horsehide or cowhide, tightly stitched together."" It is 9–9 inches (229–235mm) in circumference (–in. or 73–75mm in diameter), and masses from 5 to 5oz. (142 to 149g). The yarn or string used to wrap the baseball can be up to one mile (1.6 km) in length. Some are wrapped in a plastic-like covering. A significant quality of the baseball"
"between 5.5 and 5.75 ounces (155.9g and 163g). Only one ball is used at a time, unless it is lost, when it is replaced with a ball of similar wear. It is also replaced at the start of each innings, and may, at the request of the fielding side, be replaced with a new ball, after a minimum number of overs have been bowled as prescribed by the regulations under which the match is taking place (currently 80 in Test matches). The gradual degradation of the ball through the innings is an important aspect of the game. ""Law 5: The"
"shot out when the nets are affixed too tightly. 1. A ball made of leather or synthetic material should be used. Rubber balls are not permitted (Wet leather balls and balls inflated too hard stretch while underinflated leather balls stretch at the seams). 2. All teams play with a number 5 ball, with a circumference of between 69 and 71 cm and a mass of approximately 450 grams (Balls with loose laces or uneven surfaces are not allowed). 3. The u/9, u/11 and u/13 teams play with a number 4 ball, with a circumference of 64 cm. 1. A ringball"
"The regulation outdoor polo ball is to in diameter and weighs to . Plastic balls were introduced in the 1970s. They are less prone to breakage and much cheaper. The indoor and arena polo ball is leather-covered and inflated, and is about in diameter. It must be not less than or more than in circumference. The weight must be not less than or more than . In a bounce test from on concrete at , the rebound should be a minimum of and a maximum of at the inflation rate specified by the manufacturer. This provides for a hard and"
"category of players (Men/Women/M18/M15/M12), different sizes of balls are used ranging from a circumference of 54 cm to 60 cm and weighs between 325 grams to 475 grams. Scoring Two teams of 7 players each (men or women) compete to score points with the team with the most points at the end winning the game. When a team gains a point, control of the ball is transferred to the other team. Each team comprises the following positions: Each side of the court comprises a left shooter, right shooter and 1 or 2 defenders, while the centre usually stays near the"
"ball shall have a uniform outer surface and shall be white or yellow. Its perimeter is 670 mm, and it should be of polyurethane; its weight can range from 380 grams to 400 grams. In March 2013 it developed the first World Cup in La Plata, Argentina. Participated sixteen couples of Argentina, Uruguay, Italy and Spain. In the Final, Ocaña/Palacios won 6-1/6-1 against Saiz/Rodriguez. The second Padbol World Cup was held in November 2014 in Alicante, Spain . Participated 15 couples from seven countries (Argentina, Uruguay, Mexico, Spain, Italy, Portugal and Sweden). Ramón/Hernández won the final 6-4/7-5 against Ocaña/Palacios. The"
"the basketball is also regulated. For men, the official ball is in circumference (size 7, or a ""295 ball"") and weighs 22 oz (623.69 grams). If women are playing, the official basketball size is in circumference (size 6, or a ""285 ball"") with a weight of 20 oz (567 grams). In 3x3, a formalized version of the halfcourt 3-on-3 game, a dedicated ball with the circumference of a size 6 ball but the weight of a size 7 ball is used in all competitions (men's, women's, and mixed teams). The ball may be advanced toward the basket by being shot,"
"the total length of the bat not more than 38 inches (965 mm). There is no standard for the weight which is usually between 2 lb 7 oz and 3 lb (1.1 and 1.4 kg). The ball is a hard leather-seamed spheroid, with a circumference of . The ball has a ""seam"": six rows of stitches attaching the leather shell of the ball to the string and cork interior. The seam on a new ball is prominent, and helps the bowler propel it in a less predictable manner. During matches, the quality of the ball deteriorates to a point where"
"Tennis ball A tennis ball is a ball designed for the sport of tennis. Tennis balls are fluorescent yellow at major sporting events, but in recreational play can be virtually any color. Tennis balls are covered in a fibrous felt which modifies their aerodynamic properties, and each has a white curvilinear oval covering it. Modern tennis balls must conform to certain criteria for size, weight, deformation, and bounce criteria to be approved for regulation play. The International Tennis Federation (ITF) defines the official diameter as . Balls must have masses in the range . Yellow and white are the only"
"or attempting to catch, baseballs tied to MLB milestones: Other famous baseballs: Baseball (ball) A baseball is a ball used in the sport of the same name. The ball features a rubber or cork center, wrapped in yarn, and covered, in the words of the Official Baseball Rules ""with two strips of white horsehide or cowhide, tightly stitched together."" It is 9–9 inches (229–235mm) in circumference (–in. or 73–75mm in diameter), and masses from 5 to 5oz. (142 to 149g). The yarn or string used to wrap the baseball can be up to one mile (1.6 km) in length. Some"
"mass between , and is in circumference ( in diameter). A 12-inch circumference ball is generally used in slow pitch, although in rare cases some leagues (especially recreational leagues) do use a 14-inch circumference ball. Some balls have a raised seam, and others do not. The ball is most often covered in white or yellow leather in two pieces roughly the shape of a figure-8 and sewn together with red thread, although other coverings are permitted. The core of the ball may be made of long fiber kapok, or a mixture of cork and rubber, or a polyurethane mixture, or"
"Olympic Association in 1961. Ball badminton eventually spread to Andhra Pradesh, and the first national championship was conducted at Hyderabad in 1956. It was later introduced at the junior and sub-junior levels. Types of incumbent The ball is yellow wool, from 27 to 30 grams in weight and from 5 to 5.5 cm in diameter. A standard ball-badminton racket usually weighs from 165 to 185 grams and is 63 to 70 cm in length. The strung oval area of the racket should be 20 to 22 across and 24 to 27 cm in length. The net is made of fine"
"net perpendicular to the sideline and is a vertical extension of the side boundary of the court. A ball passing over the net must pass completely between the antennae (or their theoretical extensions to the ceiling) without contacting them. FIVB regulations state that the ball must be spherical, made of leather or synthetic leather, have a circumference of 65–67 cm, a weight of 260–280 g and an inside pressure of 0.30–0.325 kg/cm. Other governing bodies have similar regulations. Each team consists of six players. To get play started, a team is chosen to serve by coin toss. A player from"
"a hard rubber ball is used: this ball has circumference of 39 centimetres and weighs 350 grams or 750 gr in ancient version. Scoring is by fifteens and tens, as in tennis, in this manner: 15 – 30 – 40 – 50 or victory of a game but early was 15 – 30 – 45 – 60; the team which wins 12 games is final winner of the match. A notable feature is that the ball is put into play by a designated server, called the ""mandarino"", who otherwise is not part of the game. The receivers can reject serves"
"42.67 mm and its mass may not exceed 45.93 g. Modern golf balls have a two-, three-, or four-layer design constructed from various synthetic materials. The surface usually has a pattern of 300-450 dimples designed to improve the ball's aerodynamics by reducing the ball's drag-inducing wake and allowing spin on the ball to create lift. The method of construction and materials used greatly affect the ball's playing characteristics such as distance, trajectory, spin and feel. Harder materials, such as Surlyn, usually result in the ball's traveling longer distances, while softer covers, such as urethane, tend to generate higher spin, more"
"the ball is allowed to cross. Two side lines and two end lines, measuring wide, delineate the playing court. FIVB regulations state that the ball must be spherical and made of flexible and water resistant material, such that it is appropriate for outdoor conditions. A beach volleyball ball has a circumference of 66–68 cm, a weight of 260–280 g and an inside pressure of 0.175–0.225 kg/cm. A team is composed exclusively of two players, who must always be in play and who cannot be subjected to any substitutions or replacement. At the moment the ball is hit by the server,"
"swing. Softball rules vary somewhat from those of baseball. Two major differences are that the ball must be pitched underhand—from 46 ft (14 m) for men or 43 ft (13.1 m) for women as compared with 60.5 ft (18.4 m) in baseball—and that seven innings instead of nine constitute a regulation game. Despite the name, the ball used in softball is not soft. It is about 12 in (about 30 cm) in circumference (11 or 12 in for slow-pitch), which is 3 in (8 cm) larger than a baseball. Softball recreational leagues for children use 11-inch balls until they participate"
"of hollow vulcanized rubber with a felt coating. Traditionally white, the predominant colour was gradually changed to optic yellow in the latter part of the 20th century to allow for improved visibility. Tennis balls must conform to certain criteria for size, weight, deformation, and bounce to be approved for regulation play. The International Tennis Federation (ITF) defines the official diameter as . Balls must weigh between . Tennis balls were traditionally manufactured in the United States and Europe. Although the process of producing the balls has remained virtually unchanged for the past 100 years, the majority of manufacturing now takes"
"field, 150 meters by 100 meters officially, unofficially whatever field is big enough. Moreover, official dimensions can vary between 120 and 150 meters in length on 80 to 100 meters in width. The ball used approximately 2.5 inches in diameter and the mallet is of length 1 meter. There are 6 members (7 in France) on a team of which 4 (5 in France) are on field at a time. The other two are used as substitutes. International matches are played for a duration of 30 minutes divided into periods of 7.5 minutes each called as a ""chukkar"". Extra time"
"Some leagues may require wooden bats because of player safety issues. All bats used in ASA softball competition must have an ASA-approved stamp and be included in a list of approved bat models published by the ASA national office. All organizations, such as NSA, USSSA, ISA, and ISFA, all require their own approved stamps, without one, the bat is illegal ad cannot be used, an usage will result in being thrown out of the game All A fastpitch softball bat may be no more than 34 inches long, 2 inches in diameter. Also, a ""drop"" of no more than 13"
"ball, a bat (composite, metal or wooden), gloves, uniforms and protective gear: for example, helmets for the offensive team and a helmet, shin guards and chest protector for the defensive catcher. Also cleats, sliding shorts, face masks and knee sliders may be worn for softball. Despite the sport's name, they are not soft at all. The size of the ball varies according to the classification of play; the permitted circumferences in international play are (), in mass between in fastpitch; (), mass between in slow pitch. For comparison, under the current rules of Major League Baseball, a baseball has a"
"weight specified for a ball is the dry weight, as older balls often became significantly heavier in the course of a match played in wet weather. The standard ball is a Size 5, although smaller sizes exist: Size 3 is standard for team handball and Size 4 in futsal and other small-field variants. Other sizes are used in underage games or as novelty items. Most modern footballs are stitched from 32 panels of waterproofed leather or plastic: 12 regular pentagons and 20 regular hexagons. The 32-panel configuration is the spherical polyhedron corresponding to the truncated icosahedron; it is spherical because"
"Typical dimension limits include 35 mm width x 80 mm height x 15 mm depth. The game ball is a sphere of woven felt with a diameter of 10 mm weighing between 0.1 and 0.3 grams. Buttons are propelled using a flat circular plastic disc of approximately the same diameter as the buttons. Physical characteristics are not critical. There are a variety of different rule systems to define play. The following general guidelines are common to most, if not all: At the opening kickoff, all 11 pieces are relegated to their respective sides. Field players are moved during the game"
"Basketball (ball) A basketball is a spherical ball used in basketball games. Basketballs typically range in size from very small promotional items only a few inches in diameter to extra large balls nearly a foot in diameter used in training exercises. For example, a youth basketball could be in circumference, while a National Collegiate Athletic Association (NCAA) men's ball would be a maximum of and an NCAA women's ball would be a maximum of . The standard for a basketball in the National Basketball Association (NBA) is in circumference and for the Women's National Basketball Association (WNBA), a maximum circumference"
"medical advice, such as if they have been concussed numerous times. Some players, predominantly ruckmen, wear shin guards. All protective equipment must be approved by the umpires to ensure that it can not injure other players. The game is played with an ellipsoid ball, on a grassed oval. Four posts, aligned in a straight line, 6.4 metres apart from each other (19.2m in total length), are erected at either end of the oval. The size of the ground is not fixed, but is generally between 135-185m long and 110-155m wide. Lines are drawn on the field to mark The game"
"slack more than 5 mm to a rigid, without slack - a professional coaching racket. The sagging level of the membrane corresponds to the athlete's level of training and the discipline of the roliball. Ball for the roliball contains the sand, so it does not bounce off the racket during reception in the game, but allows smooth joining to it. The ball weighs 50-55 g, diameter is about 65 mm. Balls for the roliball are made of rubber, plastic or leather. The most common balls are inflatable rubber balls, which are used for competitions. Roliball Roliball (Pinyin Tàijí Róulìqiú, Taiji"