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MLB franchise chronology
09/29/2004 4:45 PM ET
NATIONAL LEAGUE (1876-present)

1876 - National League officially formed with eight franchises
Boston; Chicago; Cincinnati; Hartford; Louisville; New York; Philadelphia; St. Louis

1877 - Philadelphia and New York expelled from National League

1878 - Louisville dropped out of National League

1878 - National League admitted three franchises in Providence, Indianapolis and Milwaukee for 1878 season

1878 - Indianapolis resigned from National League

1878 - National League admitted three franchises in Syracuse, Buffalo and Cleveland for 1879 season

1879 - National League expanded with a franchise in Troy, New York for 1879 season

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1880 - Cincinnati expelled from National League; Detroit joined National League for 1881 season

1880 - Syracuse dropped out of National League; replaced by Worcester

1882 - Troy and Worcester were removed from National League; replaced by Philadelphia and New York

1885 - Cleveland dropped out of National League; replaced by St. Louis

1886 - Washington, D.C. and Kansas City admitted to National League; replaced Buffalo and Providence

1887 - St. Louis relocated to Indianapolis

1887 - Kansas City dropped out of National League; replaced by Pittsburgh

1888 - Detroit resigned from National League; replaced by Cleveland

1890 - Brooklyn and Cincinnati joined National League; replaced Indianapolis and Washington, D.C.

1892 - National League expanded with franchises in St. Louis, Washington, D.C., Louisville and Baltimore

1900 - National League contracted four franchises: Louisville, Baltimore, Washington, D.C. and Cleveland

1953 - Boston Braves relocated to Milwaukee

1958 - Brooklyn Dodgers relocated to Los Angeles

1958 - New York Giants relocated to San Francisco

1962 - National League expanded with franchises in New York and Houston

1966 - Milwaukee Braves relocated to Atlanta

1969 - National League expanded with franchises in Montreal, Canada and San Diego

1993 - National League expanded with franchises in Denver, Colorado and Miami, Florida

1998 - Milwaukee Brewers moved to National League from American League

1998 - National League expanded with a franchise in Phoenix, Arizona

2005 - Montreal Expos relocated to Washington, D.C.

AMERICAN LEAGUE (1901-present)

1901 - American League officially organized with eight franchises
Baltimore; Boston; Chicago; Cleveland; Detroit; Milwaukee; Philadelphia; Washington, D.C.

1902 - Milwaukee Brewers relocated to St. Louis and became the Browns

1903 - Baltimore Orioles relocated to New York and became the Yankees

1953 - St. Louis Browns relocated to Baltimore and became the Orioles

1954 - Philadelphia Athletics relocated to Kansas City

1961 - Washington Senators relocated to Minneapolis/St. Paul, Minnesota and became the Twins

1961 - American League expanded with franchises in Los Angeles and Washington, D.C.

1967 - Kansas City Athletics relocated to Oakland

1969 - American League expanded with franchises in Kansas City and Seattle

1970 - Seattle Pilots relocated to Milwaukee and became the Brewers

1972 - Washington Senators relocated to Arlington, Texas and became the Rangers

1977 - American League expanded with franchises in Toronto, Canada and Seattle

1998 - Milwaukee Brewers moved to the National League

1998 - American League expanded with a franchise in Tampa Bay

This story was not subject to the approval of Major League Baseball or its clubs.


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