Baseball facts for kids

Quick facts for kids
Baseball

Los Angeles Angels center fielder Mike Trout hits a home run off a pitch from New York Mets pitcher Tommy Milone on May 21, 2017
Highest governing body	World Baseball Softball Confederation
First played	18th-century England (predecessors) 19th-century United States (modern version)
Characteristics
Contact	Tagging-only
Team members	9 baseball players: pitcher catcher first baseman second baseman third baseman shortstop left fielder center fielder right fielder
Mixed-sex	Yes, separate competitions
Type	Team sport, bat-and-ball
Equipment	Baseball Baseball bat Baseball glove Batting helmet Catcher's gear
Venue	Baseball park Baseball field
Glossary	Glossary of baseball terms
Presence
Country or region	Worldwide (most prominent in the Americas and East Asia)
Olympic	Demonstration sport: 1912, 1936, 1952, 1956, 1964, 1984 and 1988 Medal sport: 1992–2008, 2020
World Games	1981

Baseball is an exciting bat-and-ball sport played by two teams. Each side has nine players who take turns batting and fielding. A game is made of plays starting when a pitcher throws a ball. A batter tries to hit the thrown ball using a smooth bat. The batting team wants to score runs by sprinting around four bases. The fielding team works to stop them by getting three players out.

A player scores a run by touching first, second, third, and home plate. The team with the most runs after nine full rounds, called innings, wins. Baseball is famous across the globe and is known as the national sport in America. It is also beloved in places like Japan, South Korea, and the Dominican Republic. Young people everywhere enjoy playing this active, fun, and fast-moving team sport.

How to Play Baseball: Rules and Field Setup

Diagram of a baseball field showing all the bases and field zones.

A tournament match between the Dominican Republic and Puerto Rico.

A standard baseball game lasts nine rounds called innings. During each inning, both teams get one turn to bat and score. The visiting club always bats first during the top of the inning. The home team plays defense first and then bats in the bottom half. High school games usually last seven innings, while Little League Baseball plays six innings. If the score is tied after nine innings, teams play extra innings.

The field is shaped like a fan, centered around a diamond-shaped infield. White chalk lines called foul lines mark the field boundaries starting from home plate. Action that happens inside this ninety-degree area is called fair territory. Balls landing outside these boundary markers roll into foul territory. The four corners of the infield diamond feature first, second, third, and home plate.

Out past the dirt infield lies a wide grassy lawn called the outfield. A tall boundary fence typically surrounds the outer edge of the entire outfield. In the center of the infield sits a dirt mound for the pitcher. Pitchers push off a small rectangular rubber slab set into the mound.

Essential Baseball Gear and Playing Equipment

Every baseball player needs the proper athletic gear to stay safe and play well. The ball has a cork or rubber center wrapped tight with sturdy wool yarn. White cowhide leather covers the outside, held together by 108 bright red stitches. It fits neatly inside the palm of an adult player's hand.

Batters swing a rounded bat made of solid wood or lightweight aluminum alloy metal. Professional major league players must swing bats carved from a single piece of wood. Youth leagues and schools often use metal bats because they are lighter to swing. Batters also wear hard plastic helmets with ear flaps to protect their heads.

Fielders wear a padded leather glove or mitt on one hand to catch balls. The glove has webbed pockets between the fingers to secure fast-moving throws. Catchers wear extra protective gear, including face masks, chest pads, and shin guards.

Positions on the Baseball Field

Diagram indicating the standard layout of positions.

Nine defensive players take specific spots on the field during every half-inning. The pitcher stands in the middle on the mound to deliver the ball. The catcher squats behind home plate to catch any pitches that pass by. Both players work closely together as a defensive unit to stop opposing hitters.

Four players defend the dirt area around the running paths in the infield. The first baseman covers the bag at first base to receive fielding throws. The second baseman guards the space between first base and second base. Nearby, the shortstop plays between second base and third base to field grounders. The third baseman guards the hot corner near the bag at third base.

Three fast outfielders patrol the deep grass behind the dirt infield paths. The left fielder watches the grass on the left side of the field. The center fielder covers the vast open territory out in deep center. The right fielder defends the right side of the spacious grassy outfield.

How the Offense Scores Runs

Batter David Ortiz waiting for a pitch in the batter's box.

A play begins with the batter standing inside the chalked batter's box. The batter swings the bat trying to drive the ball across the field. If the batter hits the ball into fair ground, they run toward first base. The runner must reach first base before a fielder can throw the ball there.

A batter who arrives safely at first base earns credit for a single. Reaching second base on a solid hit is called a double. Making it safely all the way to third base is called a triple. A runner who successfully touches every base scores an important team run.

If a batter hits the ball over the outfield fence, it is a home run. The batter and any runners on base trot home without being tagged out. When the bases are full, a home run is called a grand slam. A grand slam instantly puts four points onto the scoreboard for the team.

A runner sliding into home plate to score a run.

Baserunners can also advance while the pitcher is throwing the ball toward the plate. When a runner takes an extra base during a pitch, it is a stolen base. Runners must run carefully and touch each base in proper order without skipping any. If a fly ball is caught, runners must tag up before running forward.

How the Defense Gets Batters and Runners Out

The strike zone is an imaginary target above home plate.

A shortstop tries to tag out a sliding runner at second base.

The fielding team works hard to get three outs to end each half-inning. A batter who swings and misses three times earns a strikeout and sits down. The umpire calls strikes if a pitch crosses through an imaginary strike zone. If a pitcher throws four pitches outside this zone, the batter gets a base on balls.

Fielders can also make an out by catching any batted ball before it bounces. This defensive play is known as a flyout and retires the batter instantly. If a hit ball bounces on the dirt, fielders must hurry to grab it. Throwing the ball to first base before the runner arrives creates a ground out.

When runners must move to make room for another teammate, it is a force play. A fielder holding the ball can simply step on the base for a force out. Otherwise, a fielder must use a tag out by touching the runner with the ball. Making two outs during a single play is known as an exciting double play.

The Batting Lineup and Player Changes

Every team creates a specific list of hitters called the batting order. Hitters must step up to the plate in this exact order all game. Once player number nine bats, the lineup loops back around to player number one. Each time a batter steps up to hit, it is called a plate appearance.

A manager can take a player out of the game using a defensive substitution. In professional games, players who leave the field cannot return to the contest. Youth leagues have special rules allowing kids to re-enter games so everyone plays. Some games also use a special hitter who bats in place of the pitcher.

This helpful player is called the designated hitter and only takes turns batting. The designated hitter never grabs a glove to play defense on the field. This rule lets a great hitter help the offense while pitchers focus on throwing. Most major professional leagues across the globe use this helpful designated hitter rule today.

Baseball Team Members, Coaches, and Field Officials

Players and Roster Roles

A pitcher talking with the manager during a mound visit.

A modern professional team carries twenty-six active athletes on its official team squad. Eight everyday starters, called position players, play the field and hit regularly. The team also keeps backup players who can take over different fielding spots. Athletes who can play multiple infield and outfield positions are called utility players.

Pitchers form an essential part of every team's roster strategy during the season. Teams use five starting pitchers who take turns starting games on a schedule. Relief pitchers wait in an area past the outfield fence called the bullpen. These pitchers enter games late to finish innings when starters grow tired from throwing.

The final pitcher who enters close games to secure victories is the closer. Pitching requires tremendous arm strength, stamina, throwing control, and mental focus under pressure. Teams rotate their pitchers carefully to keep their throwing arms healthy all season long.

Team Managers and Dugout Coaches

The head leader of a baseball team is known as the manager. The manager decides the batting lineup, chooses starting pitchers, and directs all game strategies. Several specialized assistants called coaches help the manager teach players proper skills. Coaches help players improve their batting swings, fielding techniques, and pitching mechanics.

Two coaches stand right on the field during innings in special coaching boxes. The first base coach and third base coach wave runners forward or hold them up. They also flash secret hand signals from the manager to batters at the plate. Baseball managers and coaches wear the same team uniforms as the active players.

Umpires: The Game Judges

Every baseball game needs neutral officials called umpires to enforce all official rules. The home plate umpire stands right behind the catcher to call balls and strikes. This umpire also decides if runners crossing home plate touch the rubber dish safely. Other umpires stand near the bases to judge force plays and tags.

Major League Baseball games use four umpires during regular-season contests across the country. One umpire watches each base closely to decide if runners are out or safe. During big championship games, six umpires work together to watch outfield foul lines too. Umpires make swift, fair choices so every contest stays honest and fun.

Smart Strategies and Field Tactics

Baseball is an exciting mental game filled with quick choices on every pitch. Managers study which batters do best against right-handed or left-handed throwing styles. Left-handed batters often see the ball better against right-handed pitchers who throw toward them. Managers arrange their batting orders and substitute bench players to create favorable matchups.

Pitching Grips and Defensive Alignments

A first baseman tries to tag a runner during a quick pickoff throw.

Pitchers use different finger grips on the baseball's seams to make pitches move. A fastball flies through the air with great velocity and straight-line speed. A slower changeup tricks the batter by looking fast while flying toward home slowly. Pitchers also throw spinning balls called breaking balls that bend sharply in mid-air.

A popular breaking pitch that curves downward across the plate is the curveball. Another sharp, darting pitch that slides sideways away from hitters is the slider. Catchers flash finger signs between their knees telling pitchers which pitch to deliver. If a pitcher wants to throw something else, they shake their head no.

When a runner takes a lead off base, the pitcher can throw a pickoff. This surprise throw to a teammate aims to tag the runner out quickly. Pitchers must follow strict delivery rules or the umpire calls an illegal balk. Fielders can also change positions on the grass, moving to where batters hit most.

Batting Plans and Running Tactics

Star outfielder Mookie Betts swings his bat to hit a pitch.

Batters use smart teamwork strategies to move runners around the bases toward home. On a hit and run, the runner dashes forward as the batter swings away. This forces opposing infielders to move out of position, opening wide fielding gaps. A batter can also tap the ball gently into the infield dirt.

This soft tap is called a sacrifice bunt because the batter gives up an out. It lets a teammate move forward into great scoring position on second base. Fast runners sometimes drop bunts on purpose trying to race safely to first base. If a bunt scores a runner from third base, it is a squeeze play.

With a runner on third base, hitters aim for a deep outfield fly ball. Even if an outfielder catches the ball, the runner can sprint safely home. This helpful hit gives the batter credit for an official sacrifice fly. Good batters study the count of balls and strikes to pick the best pitch.

The Amazing History of Baseball

Centuries ago, people in England played bat-and-ball games like rounders and stoolball. A popular British children's book from 1744 called A Little Pretty Pocket-Book mentioned "Base-Ball." English immigrants carried these early running and batting games across the ocean to North America. Communities in Canada and the United States adapted these pastimes into new local versions.

Baseball became even more popular than cricket in America during the 1860s.

A historic bat-and-ball contest took place in Beachville, Ontario, Canada, in June 1838. In 1845, a sportsman named Alexander Cartwright helped write down the Knickerbocker Rules. These new rules created modern bases, foul lines, and standard three-out innings for players. The first game under these modern rules was played in Hoboken, New Jersey, in 1846.

Building the Major Leagues in America

Jackie Robinson played with courage and broke the color barrier in 1947.

During the 1850s, baseball became hugely popular around cities like New York. The National League formed in 1876 with clubs competing in major cities. Later, in 1901, the American League became another major professional circuit for teams. In 1903, the two league champions met in the very first World Series.

For decades, unfair rules barred African Americans from playing on major league teams. Talented Black ballplayers formed their own successful organizations called the Negro leagues. Stars like Satchel Paige and Josh Gibson amazed cheering crowds with their incredible skills. In 1947, Jackie Robinson bravely joined the Brooklyn Dodgers, ending racial segregation in the majors.

During the 1920s, a slugger named Babe Ruth thrilled fans by hitting soaring home runs. Ruth changed baseball forever, transforming the low-scoring sport into an exciting power game. In the 1950s, Latin American superstars like Venezuelan Chico Carrasquel and Cuban Minnie Miñoso shined. Today, players from all backgrounds play together on diamonds across the globe.

How Baseball Spread Around the World

Manager Sadaharu Oh held the world record for professional home runs.

A game of pesäpallo, the exciting Finnish version of baseball, played in 1958.

Baseball quickly crossed oceans to become a beloved sport in many different nations. American soldiers played baseball matches in Mexico at Xalapa, Veracruz, in 1847. In 1878, players in Cuba established their first championship league on the island. The English soccer team Aston Villa even won a British baseball championship in 1890.

In the 1920s, an athlete named Lauri "Tahko" Pihkala created pesäpallo, Finland's national baseball game. Japanese fans fell in love with baseball, building Nippon Professional Baseball into a world-class league. Japanese slugger Sadaharu Oh hit an astonishing 868 career home runs during his career. Countries like South Korea, Taiwan, Australia, and Italy run successful professional leagues too.

The World Baseball Classic lets top national teams compete against each other for world trophies. Baseball also appeared as an official medal competition at the Olympic Games for years. International tournaments continue to bring countries together through friendly sporting competition on the diamond.

What Makes Baseball Unique?

Baseball is different from almost every other major sport kids watch and play. Most popular team games use a running clock that counts down the minutes. Games like soccer, basketball, and football end when the game timer hits zero. Baseball does not rely on a ticking clock to decide when games are finished.

The Game Without a Clock

A classic baseball covered in red stitching.

In games with clocks, teams that are winning often waste time to run out minutes. In baseball, a leading team cannot simply hold the ball to win the game. The defense must throw strikes and record twenty-seven outs to complete nine full innings. A team that is losing can always rally back as long as outs remain.

Because games could run long, leagues recently added a digital pitch clock to fields. This timer makes sure pitchers deliver throws and batters get ready without stalling. Games move much faster today, keeping the action exciting for young fans watching along. Every batter gets a full, fair chance to hit without rushing against a clock.

One-on-One Showdowns on Every Pitch

Babe Ruth became famous for hitting tape-measure home runs.

Baseball is a team sport, but it features thrilling individual battles on every pitch. The pitcher and batter face each other directly in a tense contest of wits. A pitcher tries to outsmart the hitter with fast pitches and sharp curves. The batter must watch the ball closely and decide whether to swing instantly.

When the ball flies into play, fielders must make split-second choices all alone. An outfielder running after a deep fly ball must decide how to catch it. Each player's individual decisions show up clearly in the game's official record books. This special balance between individual skill and team spirit makes baseball fun to learn.

Unique Stadiums and Outfield Fences

The famous Green Monster wall at Fenway Park in Boston.

A game between the Yankees and Red Sox at historic Fenway Park.

In basketball or soccer, every court and field shares identical boundary dimensions. Baseball is special because every single ballpark has a different shape and outfield size. The infield diamond is always identical, but the outfield walls vary from city to city. Some stadiums have deep outfield fences, while other parks feature short home run porches.

Boston's famous Fenway Park features a towering 37-foot green wall called the Green Monster. In Houston, the Crawford Boxes sit just 315 feet from home plate in left field. In Denver, Coors Field sits a mile high where thin air makes hit balls fly farther. Changing winds blowing off Lake Michigan can push fly balls into Wrigley Field stands.

Some modern ballparks have natural green grass, while other venues use smooth artificial turf. Stadiums in rainy cities even have giant retractable roofs that close to keep fields dry. These unique park features mean every baseball game feels like a whole new adventure.

Baseball Math: How Statistics Track the Action

Baseball fans love tracking numbers, facts, and figures to see how players perform. Ever since writer Henry Chadwick invented the box score, math has guided baseball. Chadwick created simple ways to record hits, runs, and errors in daily newspapers. Today, team scouts and managers use advanced numbers to choose the best lineup options.

Classic Batting and Running Numbers

Hall of Fame star Rickey Henderson stealing third base.

Fans check several traditional statistics to measure how well hitters perform during the season:

• At bats: The number of official chances a batter gets to hit the ball.
• Hits: How many times a batter hits the ball safely and reaches base.
• Runs: The total number of times a player circles the bases to score.
• Runs batted in (RBIs): The count of runners who scored because of that batter's hit.
• Batting average: Hits divided by at-bats, showing how often a player gets hits.
• Stolen bases: How many times a fast runner steals an extra base safely.

A batting average over .300 means a player gets three hits in every ten at-bats. That is considered great hitting in baseball, showing how hard hitting really is. Legendary runner Rickey Henderson stole 1,406 bases in his career, an all-time major league record.

Classic Pitching and Fielding Records

Pitching legend Cy Young won 511 games during his career.

Pitchers and fielders also have their own special statistics to track their defensive success:

• Wins and losses: Games where a pitcher helped their team take or keep the lead.
• Earned run average (ERA): The average number of runs a pitcher allows every nine innings.
• Strikeouts: The total number of batters a pitcher strikes out during the season.
• Saves: When a relief pitcher finishes a close game to protect the lead.
• Putouts: Times a fielder makes an out by catching or tagging a runner.
• Assists: Throws made by a fielder that lead directly to an out.
• Errors: Mistakes made by fielders that let runners reach base safely.

Great pitcher Cy Young won an amazing 511 games during his historic career. Today, the top pitcher in each league receives the prestigious Cy Young Award each autumn.

Sabermetrics: Advanced Baseball Science

Sabermetrics is the modern study of baseball using advanced mathematics and computer data. The word comes from SABR, the Society for American Baseball Research. A researcher named Bill James helped make these smart number formulas famous worldwide. Today, every professional team employs computer analysts to study player performance and game strategy.

Sabermetricians look at useful new numbers that reveal hidden player value on the field:

• On-base percentage (OBP): Measures how often a hitter gets on base safely using any method.
• Slugging percentage (SLG): Shows how many total bases a hitter earns per at-bat.
• On-base plus slugging (OPS): Adds on-base percentage and slugging percentage to measure overall hitting power.
• Wins Above Replacement (WAR): Shows how many extra wins a player gives their team.

These clever statistics help managers spot great players whose skills might be overlooked otherwise. Even young fans enjoy learning how simple math formulas explain their favorite players' achievements.

Baseball Culture Around the World

College players practicing baseball at Waseda University in Tokyo.

President George W. Bush preparing to throw the first pitch at the 2001 World Series.

Baseball brings people together in cities, small towns, and ballparks across many different continents. Fans gather with families on sunny summer afternoons to share hot dogs and peanuts. People sing traditional songs together like "Take Me Out to the Ball Game" during games. The sport builds strong community friendships and teaches young people positive lessons about teamwork.

The Americas and the Caribbean

In the United States, baseball has long been celebrated as the great national pastime. Presidents often throw out ceremonial first pitches from the mound to open new seasons. In Canada, fans cheer for the Toronto Blue Jays at their downtown domed stadium. Millions of families tune in each October to watch the exciting World Series games.

Across Latin America, baseball is played with huge energy, joy, and incredible passion. In Venezuela, the Dominican Republic, and Puerto Rico, kids play baseball in every town. Towns like San Pedro de Macorís have produced dozens of world-famous major league champions. Superstars like Hall of Famer Roberto Clemente are remembered as true national heroes for their kindness.

East Asia and Beyond

Baseball is also the most popular spectator sport across the island nation of Japan. Millions of devoted fans pack giant stadiums to support their favorite professional teams. High school players dream of competing in the famous Koshien tournaments held each year. In Taiwan and South Korea, stadiums fill with music, cheers, and organized team chants.

Baseball continues to expand into new countries like China, Australia, and the Czech Republic. International youth tournaments allow boys and girls from diverse cultures to play together. No matter what language players speak, the rules of the diamond remain the same.

Kids Playing Baseball: Leagues and Fun Games

Kids playing a friendly neighborhood game of stickball.

Millions of boys and girls play organized baseball every year in youth leagues worldwide. Little League Baseball organizes leagues for over two million kids across eighty different countries. Other great organizations like the Babe Ruth League help youth players learn good sportsmanship. Very young children often begin by hitting balls off stands in Tee-ball games.

High schools and colleges offer team programs that help student-athletes build lasting friendships. Playing baseball teaches young athletes patience, focus, hand-eye coordination, and how to support teammates. Regular physical exercise outdoors keeps growing bodies strong, healthy, agile, and energized for school work.

Creative Variations of Baseball

Kids love creating neighborhood versions of baseball using whatever equipment they find nearby:

• Stickball: A popular city street game played with a broom handle and rubber ball.
• Wiffle ball: A backyard game using a lightweight plastic bat and perforated ball.
• Softball: Played on a smaller diamond using a larger ball pitched underhand.
• Baseball5: A fast-paced, five-on-five street game where players hit balls using their bare hands.

These diverse game versions prove you do not need fancy fields to enjoy baseball. With a simple ball, a bat, and good friends, anyone can play anywhere. Baseball remains one of the world's greatest pastimes for kids of all ages.

Images for kids

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  An Afghan girl learning to play baseball in August 2002.

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  The Tampere Tigers celebrating a championship victory in Finland.

Related Pages

In Spanish: Béisbol para niños

• Baseball clothing and equipment
• Comparison of baseball and cricket
• Comparison of baseball and softball
• List of baseball films
• Tee-ball
• Women's baseball