A baseball is the
ball
A ball is a round object (usually spherical, but sometimes ovoid) with several uses. It is used in ball games, where the play of the game follows the state of the ball as it is hit, kicked or thrown by players. Balls can also be used for s ...
used in the sport of
baseball
Baseball is a bat-and-ball games, bat-and-ball sport played between two team sport, teams of nine players each, taking turns batting (baseball), batting and Fielding (baseball), fielding. The game occurs over the course of several Pitch ...
. It consists of a rubber or cork center wrapped in yarn and covered with white natural horsehide or
cowhide
Cowhide is the natural, unbleached skin and hair of a cow. It retains the original coloring of the animal. Cowhides are a product of the food industry from cattle. Cowhide is frequently processed into leather.
Process
Once a cow has been killed, ...
, or a synthetic composite leather. A regulation baseball is in circumference i.e. in diameter, with a weight of .
The leather cover is commonly formed from two saddle-shaped pieces stitched together, typically with red-dyed thread. There are 108 stitches on a regulation baseball. That stitching plays a significant role in the trajectory of a thrown baseball due to the drag caused by the interaction between the stitching and the air. Controlling the orientation of the stitches and the speed of the ball's rotation allows a pitcher to affect the behavior of the pitched ball in specific ways. Commonly employed pitches include the
curveball, the
slider, the
two-seam fastball, the
four-seam fastball
A four-seam fastball, also called a rising fastball, a four-seamer, or a cross-seam fastball, is a pitch (baseball), pitch in baseball. It is a member of the fastball family of pitches and is usually the fastest ball thrown by a pitcher. It is s ...
, the
sinker, the
cutter and the
changeup.
History
In the early, mid-1800s days of
baseball
Baseball is a bat-and-ball games, bat-and-ball sport played between two team sport, teams of nine players each, taking turns batting (baseball), batting and Fielding (baseball), fielding. The game occurs over the course of several Pitch ...
, there was a great variety in the size, shape, weight, and manufacturing of baseballs. Early baseballs were made with a rubber core from old, melted shoes, wrapped in yarn and leather. Pitchers usually made their own balls, which were used throughout the game, softening and coming unraveled as the game went on. One of the more popular earlier ball designs was the "lemon peel ball," named after its distinct four lines of stitching design. Lemon peel balls were darker, smaller, and weighed less than other baseballs, prompting them to travel further and bounce higher, causing very high-scoring games.
In the mid-1850s, teams in and around
New York met in an attempt to standardize the baseball. They decided to regulate the weight of baseballs at 5–6 oz, and with a circumference of 8–11 inches. There were still many variations of baseballs since they were completely
handmade. Balls with more rubber and a tighter winding went further and faster (known as "live balls"), and balls with less rubber and a looser winding (known as "dead balls") did not travel as far or fast. This is generally true for all baseballs. Teams often used this knowledge to their advantage, as players from the team usually manufactured their own baseballs to use in games.
There is no agreement on who invented the commonplace figure-8 stitching on baseballs. Some historians say it was invented by Ellis Drake, a shoemaker's son, to make the cover stronger and more durable. Others say it was invented by Colonel William A. Cutler and sold to William Harwood in 1858. Harwood built the nation's
first baseball factory in
Natick, Massachusetts
Natick ( ) is a town in Middlesex County, Massachusetts, United States. It is near the center of the MetroWest region of Massachusetts, with a population of 37,006 at the 2020 United States census, 2020 census. west of Boston, Natick is part o ...
, and was the first to popularize and mass-produce baseballs with the figure-8 design.
In 1876, the
National League (NL) was created, and standard rules and regulations were put in place.
A.G. Spalding, a well-known baseball pitcher who made his own balls, convinced the NL to adopt his ball as the official baseball for the NL. It remained that way for a century.
In 1910, the cork-core ball was introduced. They outlasted rubber core baseballs; and for the first few years they were used, balls were hit further and faster than rubber core balls.
Pitchers adapted with the use of the
spitball, which is now illegal, and an emphasis on changing the ball.
In 1920, a couple of important changes were made to baseballs. They began to be made using machine winders and a higher grade of yarn from
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
.
Offensive statistics rose immediately, and players and fans alike believed the new balls helped batters hit the ball further.
In 1925, Milton Reach patented his "cushion cork" center. It was a cork core surrounded by black rubber, then another layer of red rubber.
In 1934, The
National League and
American League
The American League of Professional Baseball Clubs, known simply as the American League (AL), is the younger of two sports leagues, leagues constituting Major League Baseball (MLB) in the United States and Canada. It developed from the Western L ...
came to a compromise and standardized the baseball. They agreed on a cushion cork center; two wrappings of yarn; a special
rubber cement coating; two more wrappings of yarn; and, finally, a horsehide cover.
Baseballs have gone through only a few small changes since the compromise. During
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, the United States banned the use of rubber for non war-related goods, including for baseballs. So in , instead of using rubber, baseballs were made with rubber-like shells of ''
balata'' (also once used in golf balls), which is obtained from a tropical tree. Hitting declined significantly that year.
The introduction of synthetic rubber in resulted in baseballs returning to normal.
Offense would return to normal after the return of players from the military and change back to the regular ball.
In , due to a shortage of horsehide,
cowhide
Cowhide is the natural, unbleached skin and hair of a cow. It retains the original coloring of the animal. Cowhides are a product of the food industry from cattle. Cowhide is frequently processed into leather.
Process
Once a cow has been killed, ...
replaced the big league ball's cover material.
In ,
MLB ended its relationship with
Spalding for manufacturing their baseballs and switched to
Rawlings, which still provides the balls to MLB today.
A significant increase in the number of
home runs
In baseball, a home run (abbreviated HR) is scored when the ball is hit in such a way that the batter is able to circle the bases and reach home plate safely in one play without any errors being committed by the defensive team. A home run ...
since the start of the
2016 baseball season caused MLB officials to establish a committee that would examine the manufacturing process. In December 2019, MLB officials said that a lower stitching seam profile had most likely led to the increase in home runs, but also pledged to consider studying the issue. On February 5, 2021, MLB issued a memo that said that Rawlings had altered their manufacturing process to reduce the bounce in the balls and that after extensive testing, "... we are comfortable that these baseballs meet all of our performance specifications." The same memo also noted that more teams had applied for permission to use humidors to store their baseballs. As of 2020 only the
Arizona Diamondbacks
The Arizona Diamondbacks are an American professional baseball team based in Phoenix, Arizona. The Diamondbacks compete in Major League Baseball (MLB) as a member club of the National League (NL) West Division. The franchise was established ...
,
Boston Red Sox
The Boston Red Sox are an American professional baseball team based in Boston. The Red Sox compete in Major League Baseball (MLB) as a member club of the American League (AL) American League East, East Division. Founded in as one of the Ameri ...
,
Colorado Rockies
The Colorado Rockies are an American professional baseball team based in Denver. The Rockies compete in Major League Baseball (MLB) as a member club of the National League (baseball), National League (NL) National League West, West Division. Th ...
, and
Seattle Mariners
The Seattle Mariners are an American professional baseball team based in Seattle. The Mariners compete in Major League Baseball (MLB) as a member club of the American League (AL) American League West, West Division. The team joined the American ...
, were using the devices.
Overview

Cushioned wood cores were patented in the late 19th century by sports equipment manufacturer
Spalding, the company founded by former baseball star
A.G. Spalding. In recent years, various synthetic materials have been used to create baseballs; however, they are generally considered lower quality, stitched with two red thick thread, and are not used in the
major leagues. Using different types of materials affects the performance of the baseball. Generally a tighter-wound baseball will leave the bat faster, and fly further. Since the baseballs used today are wound tighter than in previous years, notably the
dead-ball era that prevailed through 1920, people often say the ball is ''"
juiced"''. The height of the seams also affects how well a pitcher can pitch.
Baseballs used in MLB and the top minor leagues (AAA) are made to the same specifications, but labelled separately. Balls used in the lower minor leagues (up to AA) use slightly different specifications intended to make those balls somewhat more durable, although MLB pitchers on rehab assignments in the minors are usually supplied with major league-grade balls. Generally, in Little League through college leagues, the seams are markedly higher than balls used in professional leagues.
In 1901, the Spalding and Reach companies manufactured the official baseballs for the National and American Leagues, respectively, at a listed unit price of $1.25 each, which would be equal to $ today. By comparison, the same source lists top-quality baseball bats at a mere $0.75. Due to the high relative cost of ball production, club owners in the early 20th century were reluctant to spend much money on new balls if not necessary. It was not unusual for a single baseball to last an entire game, nor for a baseball to be reused for the next game especially if it was still in relatively good condition as would likely be the case for a ball introduced late in the game. Balls hit into the stands were retrieved by team employees in order to be put back in play, as is still done today in some other sports. Over the course of a game, a typical ball would become discolored due to dirt, and often tobacco juice and other materials applied by players; damage would also occur, causing slight rips and seam bursts. This would lower the offense during the games giving pitchers an advantage. However, after the 1920 death of batter
Ray Chapman after being hit in the head by a pitch, perhaps due to his difficulty in seeing the ball during twilight, an effort was made to replace dirty or worn baseballs. However, even though scores of new balls are used nowadays in every game, some rules intended solely to reduce the frequency (and associated expense) of replacing balls during a game remain in force - the
Pine Tar Incident in the 1980s was one famous incident triggered by a capricious enforcement of an obscure one.
Today, MLB teams are required to have a minimum of 156 baseballs ready for use in each game. When combined with baseballs needed for practice, etc. each MLB team uses tens of thousands of balls every season. However, modern professional-grade baseballs purchased in bulk only cost about seven dollars each (as of ) and thus make up a negligible portion of a modern MLB team's operating budget. Recreational-grade baseballs can be purchased by the public for an even lower unit price.
Once discarded by the umpire, game-used baseballs not hit into the stands are collected by
batboy
In baseball, a bat boy or bat girl is an individual who carries baseball bats to the players on a baseball team. Duties of a batboy may also include handling and preparing players’ equipment and bringing Baseball (ball), baseballs to the umpi ...
s. Many baseballs involved in historical plays are displayed at the
National Baseball Hall of Fame and Museum
The National Baseball Hall of Fame and Museum is a history museum and hall of fame in Cooperstown, New York, operated by a private foundation. It serves as the central collection and gathering space for the history of baseball in the United St ...
in
Cooperstown,
New York. Other baseballs associated with noteworthy in-game events are often authenticated and sold as
memorabilia
A souvenir (French language, French for 'a remembrance or memory'), memento, keepsake, or token of remembrance is an object a person acquires for the memory, memories the owner associates with it. A souvenir can be any object that can be collecte ...
. Most such sales today are conducted on MLB's official website. The total proceeds from such sales represent a significant portion of the total purchase cost of baseballs since even balls used for relatively minor accomplishments can each fetch hundreds or thousands of dollars.
In 1909, sports magnate and former player
Alfred J. Reach patented the ivory centered ''"ivory nut"'' in Panama and suggested it might be even better in a baseball than cork. However, Philadelphia Athletics president
Benjamin F. Shibe, who had invented and patented the cork centered ball, commented, ''"I look for the leagues to adopt an 'ivory nut' baseball just as soon as they adopt a
ferro-concrete bat and a
base studded with steel
spikes."'' Both leagues adopted Shibe's cork-centered ball in 1910.
The official major league ball is made by
Rawlings, which produces the stitched balls in
Costa Rica
Costa Rica, officially the Republic of Costa Rica, is a country in Central America. It borders Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, and the Pacific Ocean to the southwest, as well as Maritime bo ...
. Attempts to automate the manufacturing process were never entirely successful, leading to the continued use of hand-made balls. The raw materials are imported from the United States, assembled into baseballs and shipped back.
Throughout the 20th Century, Major League Baseball used two technically identical but differently marked balls. The American League had ''"Official American League"'' and the American League's president's signature in blue ink, while National League baseballs had ''"Official National League"'' and the National League president's signature in black ink.
Bob Feller
Robert William Andrew Feller (November 3, 1918 – December 15, 2010), nicknamed "the Heater from Van Meter", "Bullet Bob", and "Rapid Robert", was an American baseball pitcher who played 18 seasons in Major League Baseball (MLB) for the Clevel ...
stated that when he was a rookie in the 1930s, National League baseball laces were black, intertwined with red; American League baseball laces were blue and red. In 2000, Major League Baseball reorganized its structure to eliminate the position of league presidents, and switched to one ball specification for both leagues. Under the current rules, a major league baseball weighs between , and is in circumference ( in diameter). There are 108 double stitches on a baseball, or 216 individual stitches.
The
Nippon Professional Baseball
is a professional baseball league and the highest level of baseball in Japan. Locally, it is often called , meaning simply ''Professional Baseball''; outside of Japan, NPB is often referred to as "Japanese baseball".
The roots of the league ...
uses a ball that is slightly smaller () than its MLB and WBSC equivalents ().
While the decision whether to discard a baseball is formally at the discretion of the home plate umpire, today baseballs are expected to be immediately replaced after even minor scratches, discoloration and undesirable texture that can occur during the game. Balls used for pre-game warm-ups are often given to fans. Because baseballs are almost always replaced after each half-inning it is increasingly customary for players to give balls used to end half-innings to fans in the front rows, either by handing the ball to a fan (especially a child) in the front row or by gently tossing it into the stands, especially if the player holding it is a home team player close to the stands as for example is often the case for an outfielder catching a fly ball. MLB has long recognized any ball that comes into the possession of a spectator by any lawful means after entering the stands as immediately becoming the property of that spectator, although balls hit out of the park for momentous occasions (record setting, or for personal reasons) are often requested to be returned by the fan who catches or otherwise retrieves it, or donated freely by the fan. Usually, the player will give the fan an autographed bat and/or other autographed items in exchange for the special ball.
Without proper preparation, an official professional-grade baseball is very dangerous to throw because it is so slick and hard. By rule, balls used in the professional game must be rubbed with a mud known as
"rubbing mud", which is typically applied either by the umpires or someone working under their supervision before each game, and is intended to help the pitcher's grip.
Because the mud discolors the ball, many fans prefer to purchase non-game-used balls for purposes such as collecting autographs, etc. In contrast, recreational-grade baseballs are designed so as not to require any special preparation before being used.
Three common forms of baseball exist: the standard leather-covered ball used in ubiquitously in the sport; a rubber version used in Japan for children's baseball; and a softer yet "practice" ball mainly used indoors:
* Baseball or Hard baseball – Ordinary baseball which is used in
Major League Baseball
Major League Baseball (MLB) is a professional baseball league composed of 30 teams, divided equally between the National League (baseball), National League (NL) and the American League (AL), with 29 in the United States and 1 in Canada. MLB i ...
, in Japan is used in high school baseball and above for (hardball) baseball, referred to as hardball or baseball
*
Rubber baseball aka ''Nanshiki'' – Used for rubberball baseball usually played prior to high school in Japan; sometimes referred to as Japanese rubber baseball
* Soft (compression) baseball – Used for batting practice and fielding training or softball baseball which can be safely played indoors, usually made from polyurethane (PU) material
File:Baseball (crop).jpg, Ordinary baseball
File:Rubber baseball.jpg, Rubber baseball
File:Soft baseball.jpg, Soft (compression) baseball
Famous baseballs
Fans catching baseballs tied to MLB milestones has been a part of the game since fences became a part of it, increasingly being kept (and increasingly valuable) over time:
* The ball that
Mark McGwire hit for his 70th home run of the 1998 baseball season, then setting a new record, was sold by a fan to
Todd McFarlane for
US$
The United States dollar (Currency symbol, symbol: Dollar sign, $; ISO 4217, currency code: USD) is the official currency of the United States and International use of the U.S. dollar, several other countries. The Coinage Act of 1792 introdu ...
3.2 million at auction.
* Larry Ellison, not to be confused with the software entrepreneur of the same name, famously retrieved both
Barry Bonds
Barry Lamar Bonds (born July 24, 1964) is an American former professional baseball left fielder who played 22 seasons in Major League Baseball (MLB). Bonds was a member of the Pittsburgh Pirates from 1986 to 1992 and the San Francisco Giants f ...
' 660th and 661st home runs.
*
Barry Bonds
Barry Lamar Bonds (born July 24, 1964) is an American former professional baseball left fielder who played 22 seasons in Major League Baseball (MLB). Bonds was a member of the Pittsburgh Pirates from 1986 to 1992 and the San Francisco Giants f ...
' 73rd home run of the 2001 season. It was the last home run of his historic, record breaking season where he broke
Mark McGwire's single season home run record. Ownership of the ball generated controversy and litigation resulted between the two people who claimed to have caught it. The story was made into a documentary, ''
Up for Grabs''. It was sold in auction to Todd McFarlane for $450,000.
* Barry Bonds' record-breaking 756th home run, beating
Hank Aaron's record, caught by a New York Mets fan in 2007. It was later sold at an online auction for more than $750,000 to
Marc Eckō, a New York fashion designer.
*
Derek Jeter
Derek Sanderson Jeter ( ; born June 26, 1974), nicknamed "the Captain", is an American former professional baseball shortstop, businessman, and baseball executive. As a player, Jeter spent his entire 20-year Major League Baseball (MLB) caree ...
's 3,000th hit, a home run, was caught by a New York Yankees fan who gave the ball back to the Yankees and was rewarded with about $70,000 worth of gifts and memorabilia.
*
Roger Maris' 61st single-season home run was caught barehanded by a truck driver. The ball was sold at the price of $5,000.
Other famous baseballs:
*
Babe Ruth's
home run
In baseball, a home run (abbreviated HR) is scored when the Baseball (ball), ball is hit in such a way that the batting (baseball), batter is able to circle the bases and reach home plate safe (baseball), safely in one play without any error ( ...
in the 1933
MLB All-Star Game sold for over $800,000. It was also signed by him.
*
Hank Aaron's 755th home run ball sold for $650,000 at auction in 1999. The ball was kept in a safe deposit box for 23 years after groundskeeper Richard Arndt was fired from the Milwaukee Brewers for not returning the ball, even though he had attempted to the previous day.
* A baseball signed by both
Joe DiMaggio
Joseph Paul DiMaggio (; born Giuseppe Paolo DiMaggio, ; November 25, 1914 – March 8, 1999), nicknamed "Joltin' Joe", "the Yankee Clipper" and "Joe D.", was an American professional baseball center fielder who played his entire 13-year career ...
and
Marilyn Monroe
Marilyn Monroe ( ; born Norma Jeane Mortenson; June 1, 1926 August 4, 1962) was an American actress and model. Known for playing comic "Blonde stereotype#Blonde bombshell, blonde bombshell" characters, she became one of the most popular sex ...
(who were married for less than a year) in 1961 during spring training in Florida sold for $191,200 at auction.
* The ball that rolled between
Bill Buckner's legs (and cost Boston extra innings) during the
1986 World Series sold for $418,250 at auction.
*
Steve Bartman interfered with a play while attempting to catch a
foul ball, causing the Chicago Cubs not to get an out in "
The Inning" during the
2003 NLCS. The loose ball was snatched up by a Chicago lawyer and sold at an auction in December 2003.
Grant DePorter purchased it for $113,824.16 on behalf of
Harry Caray's Restaurant Group. On February 26, 2004, it was publicly exploded in a procedure designed by Cubs fan and
Academy Award
The Academy Awards, commonly known as the Oscars, are awards for artistic and technical merit in film. They are presented annually by the Academy of Motion Picture Arts and Sciences (AMPAS) in the United States in recognition of excellence ...
winning special effects expert
Michael Lantieri. In , the remains of the ball were used by the restaurant in a pasta sauce. While no part of the ball itself was in the sauce, the ball was boiled in water, beer, vodka, and herbs and the steam captured, condensed, and added to the final concoction.
See also
*
Cricket ball
A cricket ball is a hard, solid ball used to play cricket. A cricket ball consists of a cork (material), cork core wound with String (structure), string then a leather cover stitched on, and manufacture is regulated by cricket law at first-clas ...
—ball as used in
cricket
Cricket is a Bat-and-ball games, bat-and-ball game played between two Sports team, teams of eleven players on a cricket field, field, at the centre of which is a cricket pitch, pitch with a wicket at each end, each comprising two Bail (cr ...
of similar construction (cork center wrapped tightly with string and encased in leather with parallel sets of raised stitching across its girth).
*
Spaldeen
A Spalding Hi-Bounce Ball, often called a Spaldeen or a Pensie Pinkie, is a rubber ball, described as a tennis ball core without the felt. These balls are commonly used in street games developed in the mid-20th century, such as Chinese handball (a ...
, a ball used for
stickball, a variant of baseball.
*
Juiced ball theory
*
M67 grenade, a
frag grenade
A grenade is a small explosive weapon typically thrown by hand (also called hand grenade), but can also refer to a Shell (projectile), shell (explosive projectile) shot from the muzzle of a rifle (as a rifle grenade) or a grenade launcher. A mod ...
designed like a baseball.
Notes and references
Major League Baseball: Official Rules: 1.00 Objectives of the GameSee 1.09.
External links
Baseball Testing
{{DEFAULTSORT:Baseball (Ball)
Balls
Baseball equipment