By: HISTORY.com Editors

1901

American League is founded

Published: November 30, 2021Last Updated: May 27, 2025

On January 28, 1901, professional baseball’s American League is founded in Milwaukee, reconstituting itself from a minor-league entity to a major-league one. The league plans for a 140-game schedule, 14-man rosters and a players’ union. Franchises are in Baltimore (Orioles), Boston (Americans), Chicago (White Stockings), Cleveland (Blues), Detroit (Tigers), Milwaukee (Brewers), Philadelphia (Athletics) and Washington (Senators).

The American League's formation came shortly after professional baseball’s other major league, the National League, contracted from 12 to eight teams. Formed in 1876, the NL had been professional baseball’s most stable league for decades.

Before the Supreme Court, Sonia Sotomayor Saved Baseball

Growing up in the Bronx, Sonia Sotomayor was a Yankees fan. Little did she know that she would play a role in saving the entire sport.

1:02m watch

Other leagues, such as the American Association (established in 1881), the Union Association (1884) and the Players League (1890), struggled to compete with the NL.

The American League’s attempt to disrupt the National League’s monopoly on baseball was led by its commissioner, Bancroft Johnson. He renamed the Western League, a minor league, the American League in 1899. Johnson also withdrew from the National Agreement—a pact governing relations between the baseball leagues at the time—and, in 1901, declared the American League to be a major league.

The move was resisted by the National League, which wanted to maintain its monopoly on Major League Baseball.

“The National League is forcing this war on us,” Johnson told the . “All we ask is a chance for good, healthy rivalry and competition, but if the National League insists on fighting we shall be able to take care of ourselves.”

Eventually, the National League realized it needed to co-exist with the American League. In 1903, the leagues agreed each was a major league and that their champion would meet annually in the World Series.

Timeline

Also on This Day in History

Discover more of the major events, famous births, notable deaths and everything else history-making that happened on January 28th

Advertisement
Advertisement
Advertisement
Advertisement
Advertisement
Advertisement

Related Articles

WAVE cheerleaders at the Great Lakes Naval Training Station during World War 2. Sept. 13, 1943. - (BSLOC 2014 17 174) - Image ID: F2B5F7 (RM)

'Bear' Bryant, who became a legend at Alabama, and future Pro Football Hall of Famers were among the all-star collection of talent.

In this Dec. 28, 1975, file photo, Dallas Cowboy wide receiver Drew Pearson (88) nears the end zone on a game-winning 50-yard touchdown pass play in the fourth quarter of an NFL football game against the Minnesota Vikings in Bloomington, Minn. Cowboys quarterback Roger Staubach explained his game-winning throw by saying, "I closed my eyes and said a Hail Mary. Staubach and Pearson have connected again as part of a project to create a digital collectible of their famous Hail Mary for the Dallas Cowboys against Minnesota in 1975. It's part of an emerging product in sports memorabilia called non-fungible tokens, or NFTs. (AP Photo/File)

The miracle connection between the Dallas Cowboys' stars and Pro Football Hall of Famers stunned the Minnesota Vikings in a 1975 playoff game.

MLB Photos Archive

The first Latino Hall of Famer made charity work a priority.

7 Early NFL Quarterbacks Who Changed the Game

Benny Friedman was the league's 'first real quarterback,' and the Los Angeles Rams' Bob Waterfield, who was married to a famous actress, glamorized the position.

About the author

HISTORY.com Editors

HISTORY.com works with a wide range of writers and editors to create accurate and informative content. All articles are regularly reviewed and updated by the HISTORY.com team. Articles with the “HISTORY.com Editors” byline have been written or edited by the HISTORY.com editors, including Amanda Onion, Missy Sullivan, Matt Mullen, Christian Zapata and Cristiana Lombardo.

Fact Check

We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us! HISTORY reviews and updates its content regularly to ensure it is complete and accurate.

Citation Information

Article title
American League is founded
Website Name
History
Date Accessed
October 17, 2025
Publisher
A&E Television Networks
Last Updated
May 27, 2025
Original Published Date
November 30, 2021

History Every Day

Sign Up for This Day in History

Uncover fascinating moments from the past every day! Learn something new with key events in history, from the American Revolution to pop culture, crime and more.

By submitting your information, you agree to receive emails from HISTORY and A+E Global Media. You can opt out at any time. You must be 16 years or older and a resident of the United States.More details: Privacy Policy | Terms of Use | Contact Us
Flower