The 1926 World Series was the championship series of the 1926 Major League Baseball season. The 23rd edition of the Series, it pitted the National League champion St. Louis Cardinals against the American League champion New York Yankees. The Cardinals defeated the Yankees four games to three in the best-of-seven series, which took place from October 2 to 10, 1926, at Yankee Stadium and Sportsman's Park.

This was the first World Series appearance (and first National League pennant win) for the Cardinals, and would be the first of 11 World Series championships in Cardinals history. The Yankees were playing in their fourth World Series in six years after winning their first American League pennant in 1921 and their first world championship in 1923. They would play in another 36 World Series (and win 26 of those), as of the end of the 2023 season.

1926 World Series

In Game 1, Herb Pennock pitched the Yankees to a 2–1 win over the Cards. In Game 2, pitcher Grover Cleveland Alexander evened the Series for St. Louis with a 6–2 victory. Knuckleballer Jesse Haines' shutout in Game 3 gave St. Louis a 2–1 Series lead. In the Yankees' 10–5 Game 4 win, Babe Ruth hit three home runs, a World Series record equaled only four times since. According to newspaper reports, Ruth had promised a sickly boy named Johnny Sylvester to hit a home run for him in Game 4. After Ruth's three-homer game, the boy's condition miraculously improved. The newspapers' account of the story is disputed by contemporary baseball historians, but it remains one of the most famous anecdotes in baseball history. Pennock again won for the Yankees in Game 5, 3–2.

1926 World Series

Cards' player-manager Rogers Hornsby chose Alexander to start Game 6, and used him in relief to close out Game 7. Behind Alexander, the Cardinals won the final two games of the series, and thus the world championship. In Game 7, the Yankees, trailing 3–2 in the bottom of the ninth inning and down to their last out, Ruth walked, bringing up Bob Meusel. Ruth, successful in half of his stolen base attempts in his career, took off for second base on the first pitch. Meusel swung and missed, and catcher Bob O'Farrell threw to second baseman Hornsby who tagged Ruth out, ending Game 7 and thereby crowning his Cardinals World Series champions for the first time. The 1926 World Series is the only Series to date which ended with a baserunner being caught stealing.

1926 World Series

Season summary

The Cardinals won the 1926 National League pennant with 89 wins and 65 losses, two games ahead of the runner-up Cincinnati Reds, after finishing only fourth in 1925 at 77–76. Before 1926 was half over, they traded outfielder Heinie Mueller to the New York Giants for outfielder Billy Southworth. They also claimed future Hall of Fame pitcher Grover Cleveland Alexander on waivers from the Chicago Cubs. Their starting rotation was led by Flint Rhem with 20 wins and a 3.21 earned run average (ERA), far surpassing his eight wins and 4.92 ERA of 1925. Offensively, the Cardinals were led by Jim Bottomley, Rogers Hornsby (who had batted over .400 in 1925) and catcher Bob O'Farrell, 1926 National League MVP-to-be.

The 1926 NL pennant race was heated. During the second and third weeks of September, both the Cardinals and the Reds had multi-game winning streaks and traded first and second place almost every day. On September 17, the Cards took a one-game lead over the Reds and extended their lead when the Reds lost several games in a row. They lost the last game of the season to the Reds on September 26, but still finished two games ahead of them in first place in the final standings.

The Yankees had the best record in the AL at 91–63, finishing three games ahead of the Cleveland Indians and greatly improving on their 69-win, seventh-place 1925 season. Lou Gehrig played his first full season as the Yankees' starting first baseman, and the team traded for rookie shortstop Tony Lazzeri in the offseason, eventually playing him at second base. Gehrig, Lazzeri and Ruth led the offense, while Pennock and Urban Shocker led the starting rotation with 42 wins between them.

In early September 1926, thousands of Cleveland fans, confident that their Indians would win the pennant even when they trailed the Yankees by six games, made World Series ticket reservations. By September 23, the Indians were only two games behind New York, but then lost three of their final four games to finish the season three games behind.