Major League Baseball

Founding and Early League Formation

The origins of Major League Baseball trace back to the 1860s with the establishment of the National Association of Base Ball Players. This amateur organization gave way to the first professional league, the National Association of Professional Base Ball Players, in 1871. The modern National League (NL) was founded in 1876 to bring stability to the professional game, emphasizing club contracts and a full schedule of games. The league's early years were marked by instability, with frequent franchise changes and challenges from rival leagues like the American Association.

In 1900, the Western League renamed itself the American League (AL) and declared itself a major league competitor the following year. This sparked a bidding war for players and widespread contract disputes between the two leagues. The conflict was resolved by the National Agreement of 1903, which established respect for player contracts and the reserve clause. The AL and NL operated as separate legal entities until their merger into a single organization under the commissioner of baseball in 2000. Several other early leagues, including the American Association and the Federal League, are also recognized as major leagues by MLB.

The National Agreement of 1903 also established the framework for the modern minor league system. It created the National Association of Professional Baseball Leagues to oversee these lower-tier circuits and set up a formal classification system. This structure, later refined by Branch Rickey, created a pipeline of talent for the major leagues. The agreement ended the practice of players jumping between leagues and solidified the reserve clause, which bound a player to his team indefinitely.

The Dead-Ball Era and the Black Sox Scandal

The period from 1900 to 1919 is known as the dead-ball era, characterized by low-scoring games dominated by pitchers like Walter Johnson and Cy Young. The baseballs used were less tightly wound and were kept in play until they became soft and misshapen, limiting hitting distance. Large ballpark dimensions and the legal manipulation of the ball by pitchers, including the spitball, further suppressed offence. The adoption of the foul strike rule in the early 1900s also made scoring more difficult for batters.

This era ended amidst one of baseball's greatest crises. Following the 1919 World Series, eight players from the Chicago White Sox were accused of conspiring with gamblers to intentionally lose the championship, an event known as the Black Sox Scandal. Despite being acquitted in court, all eight players received lifetime bans from baseball. The scandal led to a major governance overhaul, replacing the weak National Commission with a single, powerful commissioner of baseball to restore integrity to the sport.

The dead-ball era was shaped by specific economic and physical factors. A single baseball cost three dollars, equivalent to fifty-six dollars in 2025, leading owners to reuse balls until they were damaged. Fans were expected to throw back foul balls and rare home runs to keep them in play. Pitchers could legally alter the ball with substances like licorice juice or saliva until the spitball was banned in 1921, with exceptions for a few pitchers under a grandfather clause. The style of play emphasized bunting, stealing bases, and the hit-and-run, known as small ball.

Growth, the Great Depression, and World War II

Baseball's popularity surged in the 1920s and 1930s, driven by stars like Babe Ruth, who revolutionized the game with his home run hitting. The tragic death of Cleveland's Ray Chapman from a pitched ball in 1920 accelerated the move to use new, clean baseballs regularly, helping end the dead-ball era. The New York Yankees emerged as a dominant force, appearing in 11 World Series by the end of the 1930s. The Great Depression presented severe financial challenges, with attendance falling and only two teams turning a profit in 1932.

Owners responded with innovations like night games, radio broadcasts, and promotional events to survive. Remarkably, no MLB team folded or relocated during the Depression. The onset of World War II led to a player shortage as over 500 men left for military service. With President Franklin D. Roosevelt's endorsement to continue for public morale, MLB persevered with rosters filled by younger, older, or 4F-classified players. Black players, however, remained excluded from the major leagues, continuing to play in the separate Negro leagues.

The wartime period saw unique circumstances for the league. Wartime blackout restrictions nearly caused the cancellation of the 1942 season before President Roosevelt's famous 'Green Light Letter' encouraged the sport to continue. Service teams featuring major league talent entertained troops overseas. Players like Pete Gray, who had one arm, reached the majors due to the depleted talent pool. The careers of stars like Ted Williams, Joe DiMaggio, and Bob Feller were interrupted by military service, but they returned to play after the war.

Integration and the Breaking of the Colour Barrier

A central moment in baseball and American history occurred in 1947 when Jackie Robinson broke MLB's colour barrier. Brooklyn Dodgers executive Branch Rickey selected Robinson for what was termed 'The Noble Experiment,' first assigning him to the minor league Montreal Royals in 1946. Robinson's promotion to the Dodgers in April 1947 was met with mixed reactions, including a threatened player strike that was quashed by league officials. Robinson's success, supported by teammates like Pee Wee Reese, earned him the inaugural Rookie of the Year Award.

Integration progressed quickly following Robinson's debut. Later in 1947, Larry Doby became the first African American player in the American League with the Cleveland Indians. The Dodgers added stars Roy Campanella and Don Newcombe, while the Indians signed legendary pitcher Satchel Paige. This influx of talent from the Negro leagues forever changed the game and began a slow process of desegregation in professional sports. MLB formally recognized the seven primary Negro leagues as major leagues in 2020, integrating their statistics into the official historical record.

The process of signing Robinson involved a specific commitment from the player to avoid retaliation against racial abuse. Rickey secured an agreement from Robinson to 'turn the other cheek' for at least his first two years. Robinson was signed to a contract for six hundred dollars a month, equivalent to about ninety-nine hundred dollars in 2025. His debut with the Montreal Royals in 1946 marked the first time a black player had appeared in the International League since the 1880s. Black fans immediately shifted their allegiance to MLB teams, causing a steep decline in attendance for Negro league games.

Expansion, Relocation, and Labour Relations

This changed in the 1950s and 1960s as teams began moving west and south, such as the Dodgers and Giants moving to California. The league also entered a significant expansion phase, adding eight new teams between 1961 and 1969. The players' union, the Major League Baseball Players Association, gained strength in the 1960s and 1970s, leading to a new era of labour relations. This allowed players with sufficient service time to negotiate with any team. The late 1990s and early 2000s were marked by prolific home run hitting, later overshadowed by the steroid scandal. The 2007 Mitchell Report detailed widespread use of performance-enhancing drugs across the league, leading to stricter drug testing policies.

The expansion era began with the addition of the Los Angeles Angels and Washington Senators in 1961. The New York Mets and Houston Colt .45s joined in 1962, followed by four teams in 1969: the San Diego Padres, Montreal Expos, Kansas City Royals, and Seattle Pilots. This period also saw the introduction of divisional play and the League Championship Series. Player discontent with the reserve clause and other labour practices led to the formation of a strong union, which engaged in several strikes and lockouts. The introduction of free agency fundamentally altered team economics and competitive balance.

League Structure and Season Format

Major League Baseball's 30 teams are split evenly into two leagues: the American League (AL) and the National League (NL). Each team plays a 162-game regular season schedule, beginning with Opening Day in late March or early April and concluding in early October. The team with the best regular-season record in each league receives a first-round bye in the postseason. The postseason tournament involves 12 teams, six from each league. It includes three division winners and three wild-card teams per league. The playoffs consist of four rounds: the Wild Card Series (best-of-three), Division Series (best-of-five), League Championship Series (best-of-seven), and the World Series (best-of-seven). The World Series champion is crowned after a series between the AL and NL champions. MLB also oversees Minor League Baseball, the MLB Draft League, and the Arizona Fall League, and jointly manages the international World Baseball Classic with the World Baseball Softball Confederation.

The league's structure includes three divisions in each league: East, Central, and West. The American League uses the designated hitter rule, while the National League requires pitchers to bat. The New York Yankees hold the record with 27 championships. MLB's operations extend beyond the major leagues to include governance of hundreds of minor league teams, which serve as development systems for young players. The league also organizes the annual amateur draft, where teams select eligible players.

Economic Impact, Popularity, and Global Reach

Major League Baseball is a major economic force, consistently drawing the highest total seasonal attendance of any sports league in the world. In 2025, MLB attracted 71.4 million spectators to its ballparks. The league's games are broadcast widely on television, radio, and through digital streaming services across North America and internationally. According to recent revenue rankings, MLB is the third-wealthiest professional sports league globally, behind the National Football League and the National Basketball Association.

The league's economic model includes significant revenue sharing among teams, a luxury tax on high payrolls, and lucrative national television contracts. Local media rights deals also contribute substantially to team revenues. The presence of the Toronto Blue Jays provides a direct economic and cultural connection for Canadian fans, with the team's games broadcast nationwide. MLB's digital arm, MLB Advanced Media, was a pioneer in sports streaming and continues to be a major content distributor.

MLB's international efforts include the World Baseball Classic, a tournament featuring national teams that began in 2006. The league has also played regular season games in Mexico, Japan, and the United Kingdom to grow the sport's global audience. Player development has become increasingly international, with significant talent coming from Latin American countries and Asia. MLB's total revenue is derived from gate receipts, media rights, licensing, and sponsorships.

Records, Recognition, and Statistical History

Major League Baseball maintains an extensive historical record that includes statistics from several leagues beyond the AL and NL. In 1969, the Special Baseball Records Committee officially recognized six major leagues: the National League, American League, American Association, Union Association, Players' League, and Federal League. The status of the earlier National Association as a major league remains disputed among researchers, though its stats are included by some reference sites. The Union Association's major league status is also questioned due to its instability and one dominant team. A significant development occurred in December 2020 when MLB announced its recognition of seven Negro leagues as major leagues. These include the first and second Negro National Leagues, the Eastern Colored League, the American Negro League, the East-West League, the Negro Southern League, and the Negro American League. In 2021, Baseball Reference began including statistics from those leagues in its major league data.

This recognition means that the accomplishments of Negro league stars like Josh Gibson and Satchel Paige are now part of MLB's official canon. The integration of these records has altered some all-time statistical leaderboards. The process of compiling and verifying Negro league statistics is ongoing, as many records from that era were incomplete or lost. This move by MLB represents a formal acknowledgment of the quality and significance of the segregated leagues that operated until 1948.

Questions about Major League Baseball

Who won the 2025 World Series?

The Los Angeles Dodgers won the 2025 World Series. They defeated the Toronto Blue Jays in the championship series to claim the title. The victory marked another championship for the Dodgers franchise in recent years. The Blue Jays' appearance represented a significant achievement for the Canadian team, drawing immense national interest during their postseason run.

When did the 2026 MLB season start?

The 2026 Major League Baseball season began on March 25, 2026. The opening night game featured the San Francisco Giants hosting the New York Yankees. This follows the typical scheduling pattern where the regular season starts in the last week of March or the first week of April. Each of the 30 teams plays a 162-game schedule culminating in the postseason in October.

What was the Black Sox Scandal?

The Black Sox Scandal was a conspiracy to fix the 1919 World Series between the Chicago White Sox and the Cincinnati Reds. Eight White Sox players were accused of accepting money from gamblers to intentionally lose the series. Although acquitted in a criminal trial, all eight players were permanently banned from professional baseball by Commissioner Kenesaw Mountain Landis. The scandal led to the establishment of a powerful, single commissioner's office to govern the sport and restore public trust.

Who was the first African American player in Major League Baseball?

Jackie Robinson was the first African American player in the modern major leagues. He broke the colour barrier when he started at first base for the Brooklyn Dodgers on April 15, 1947. Robinson had spent the 1946 season with the Dodgers' minor league affiliate, the Montreal Royals. His debut ended decades of racial segregation in professional baseball and paved the way for other Negro league stars to enter the majors.

Sources: Wikipedia and current public reporting, checked by the Garbutt Disposal desk. Last updated 2026-10-18.