The World Series: A History of Baseball's Fall Classic
1903: Two Leagues Make Peace
The World Series exists because two rival leagues decided to stop fighting. The National League had been operating since 1876, and the upstart American League, founded as a major league in 1901, spent its first two seasons raiding NL rosters and undercutting ticket prices. A peace agreement in 1903 recognized both as major leagues, and that October the two pennant winners met in a best-of-nine challenge series. The AL champion Boston Americans, the club later renamed the Red Sox, fell behind the Pittsburgh Pirates three games to one and then won four straight to take the series 5-3.
The idea nearly died the following year. In 1904 the New York Giants and their manager John McGraw refused to play Boston, dismissing the AL as a minor league, so no series was held. The event returned in 1905 under a formal agreement between the leagues, and the best-of-seven format quickly became standard, apart from a short-lived return to best-of-nine from 1919 through 1921. Since then the Series has been skipped only once more, in 1994, when a players' strike wiped out the postseason entirely.
The Yankees and the Age of Dynasties
No franchise is more tied to the World Series than the New York Yankees, who have won 27 championships, far ahead of the St. Louis Cardinals with 11 and the Boston Red Sox with nine. The Yankees' first title came in 1923, the year the original Yankee Stadium opened, with Babe Ruth in his prime. The 1927 "Murderers' Row" club swept Pittsburgh and is still shorthand for an overpowering team.
The dynasty kept renewing itself. New York won four straight Series from 1936 to 1939 with Lou Gehrig and Joe DiMaggio, then five in a row from 1949 to 1953 under manager Casey Stengel, a run no team has matched. A later group led by Derek Jeter and Mariano Rivera won in 1996 and then three consecutive times from 1998 to 2000. Every subsequent club that has tried to build a repeat champion is measured against those Yankee teams.
Moments That Defined October
The Series has produced some of the most replayed scenes in American sports. In 1956, Yankees pitcher Don Larsen threw the only perfect game in World Series history. Four years later, Pittsburgh's Bill Mazeroski hit the only walk-off home run ever to end a Game 7, beating the Yankees in 1960. Carlton Fisk waving his 12th-inning homer fair at Fenway Park in Game 6 of 1975, an injured Kirk Gibson limping around the bases after his pinch-hit homer for the Dodgers in 1988, and Joe Carter's series-clinching blast for Toronto in 1993 belong on the same shelf.
Not every memorable Series is a happy one. The 1919 "Black Sox" scandal, in which eight Chicago White Sox players were accused of throwing the Series to Cincinnati and were banned for life, led directly to the creation of the commissioner's office. In 2001, weeks after the September 11 attacks, the Arizona Diamondbacks beat the Yankees in seven games on a ninth-inning hit off Rivera, a finish that still ranks among the most dramatic Game 7s ever played.
Breaking the Curses
The 21st century has been defined by long droughts ending. The Red Sox, who had not won since 1918, came back from three games down against the Yankees in the 2004 American League Championship Series and then swept St. Louis to end an 86-year wait. The Chicago White Sox followed in 2005, ending a drought of 88 years. The Chicago Cubs waited longest of all: their 2016 title, sealed in a rain-delayed Game 7 in Cleveland, was the franchise's first since 1908, a gap of 108 years.
More recently the Texas Rangers won the first championship in franchise history in 2023, beating Arizona in five games. The Houston Astros won in 2017 and 2022, though the 2017 title was later tainted by a sign-stealing scandal that cost the club draft picks and its manager and general manager their jobs.
The Dodgers' Back-to-Back Titles
The Los Angeles Dodgers are the sport's current standard. After winning the pandemic-shortened 2020 season at a neutral site in Arlington, Texas, they beat the Yankees in five games in 2024 and then defended the crown in 2025 against the Toronto Blue Jays. That Series went the full seven games, and Game 7 in Toronto on November 1, 2025 was an instant classic. Los Angeles trailed into the ninth inning before Miguel Rojas tied it with a solo home run, and catcher Will Smith's solo shot in the 11th produced a 5-4 win.
Yoshinobu Yamamoto, who pitched in Games 2, 6 and 7 and earned the win in all three, was named World Series MVP. The Dodgers became the first team to win consecutive championships since the Yankees' 1998-2000 run, and the deciding game drew roughly 26 million television viewers in the United States, a reminder of how much a seventh game still means.
How Today's Postseason Bracket Works
The road to the World Series has changed dramatically since the days when only two pennant winners played. Since 2022, 12 teams qualify for the postseason: the three division winners in each league plus three wild-card teams per league. Division winners take the top three seeds, and wild cards are seeded fourth through sixth based on record.
The two best division winners in each league receive a bye straight into the Division Series. The other four teams in each league play a best-of-three Wild Card Series, with the higher seed hosting every game: the No. 3 seed faces No. 6 and the No. 4 seed faces No. 5. The winners advance to the best-of-five Division Series against the top two seeds, followed by the best-of-seven League Championship Series. The pennant winners then meet in the best-of-seven World Series, with home-field advantage going to the club with the better regular-season record and the games arranged in a 2-3-2 pattern. The champion receives the Commissioner's Trophy, and the Series MVP is chosen at the end of the final game.
Why the Fall Classic Endures
Baseball's championship is unusual among American sports because it is a series rather than a single game. A team can lose the opener, or two openers, and still win. That structure rewards depth, starting pitching and nerve, and it gives the Series a narrative arc that a one-off final cannot match. It also explains why so many of the sport's iconic moments happened in Game 6 or Game 7, when a whole season comes down to a few innings.
More than 120 years after Boston and Pittsburgh met in 1903, the Fall Classic remains the sport's anchor. The bracket is bigger, the seasons run later into the autumn and the money involved is beyond anything the founders imagined, but the appeal is unchanged: two pennant winners, a best-of-seven, and the chance to write another chapter in a very long book.
