Arizona Diamondbacks 

1998-Present
Franchise: Arizona Diamondbacks 
Location: Phoenix, Arizona

Colorado Rockies 

1993-Present
Franchise: Colorado Rockies
Location: Denver, Colorado

Florida Marlins

1993-2011 
Franchise: Miami Marlins
Location: Miami, Florida

Miami Marlins

2012-Present
Franchise: Miami Marlins
Location: Miami, Florida

Tampa Bay Devil Rays 

1998-2007 
Franchise: Tampa Bay Rays 
Location: St. Petersburg, Florida 

Tampa Bay Rays 

2008-Present
Franchise: Tampa Bay Rays 
Location: St. Petersburg, Florida

Washington Nationals 

1866-1870; 2005-Present
Franchise: Washington Nationals 
Location: Washington D.C. 

Seattle Mariners 

1977-Present
Franchise: Seattle Mariners 
Location: Seattle, Washington

Toronto Blue Jays

1977-Present
Franchise: Toronto Blue Jays
Location: Toronto, Ontario, Canada

Texas Rangers

1972-Present 
Franchise: Texas Rangers 
Location: Arlington, Texas

Milwaukee Brewers 

1970-Present
Franchise: Milwaukee Brewers
Location: Milwaukee, Wisconsin

Seattle Pilots 

1969-1969 
Franchise: Milwaukee Brewers 
Location: Seattle, Washington

Montreal Expos

1969-2004 
Franchise: Washington Nationals 
Location: Montreal, Quebec, Canada

San Diego Padres

1969-Present
Franchise: San Diego Padres
Location: San Diego, California

Kansas City Royals

1969-Present
Franchise: Kansas City Royals
Location: Kansas City, Missouri 

Oakland Athletics

1968-Present
Franchise: Oakland Athletics
Location: Oakland, California 

Atlanta Braves 

1966-Present
Franchise: Atlanta Braves 
Location: Cumberland, Georgia

Houston Astros 

1965-Present
Franchise: Houston Astros 
Location: Houston, Texas 

California Angels 

1966-1996 
Franchise: Los Angeles Angels 
Location: Anaheim, California 

Anaheim Angels 

1997-2004 
Franchise: Los Angeles Angels 
Location: Anaheim, California 

Los Angeles Angels 

1963-1965; 2005-Present 
Franchise: Los Angeles Angels 
Location: Anaheim, California 

New York Mets 

1962-Present
Franchise: New York Mets 
Location: New York City, New York 

Houston Colt .45s 

1962-1964 
Franchise: Houston Astros 
Location: Houston, Texas 

Minnesota Twins 

1961-Present 
Franchise: Minnesota Twins 
Location: Minneapolis, Minnesota 

San Francisco Giants 

1958-Present 
Franchise: San Francisco Giants 
Location: San Francisco, California 

Los Angeles Dodgers 

1958-Present 
Franchise: Los Angeles Dodgers 
Location: Los Angeles, California 

Kansas City Athletics 

1955-1967
Franchise: Oakland Athletics 
Location: Kansas City, Missouri 

Baltimore Orioles 

1869-1870; 1882-1899; 1902-1902; 1954-Present 
Franchise: Baltimore Orioles and New York Yankees 
Location: Baltimore, Maryland 

Cincinnati Redlegs 

1954-1955 
Franchise: Cincinnati Reds 
Location: Cincinnati, Ohio 

Milwaukee Braves 

1953-1965 
Franchise: Atlanta Braves 
Location: Milwaukee, Wisconsin 

Boston Bees 

1936-1942 
Franchise: Atlanta Braves 
Location: Boston, Massachusetts

Brooklyn Dodgers 

1932-1957 
Franchise: Los Angeles Dodgers 
Location: Brooklyn, New York 

Buffalo Blues 

1915-1915 
Franchise: Buffalo Blues 
Location: Buffalo, New York 

Newark Peppers 

1915-1915 
Franchise: Newark Peppers 
Location: Newark, New Jersey

Chicago Whales 

1915-1915 
Franchise: Chicago Whales 
Location: Chicago, Illinois 

Cleveland Indians 

1915-Present 
Franchise: Cleveland Indians 
Location: Cleveland, Ohio 

St. Louis Terriers 

1914-1915 
Franchise: St. Louis Terriers 
Location: St. Louis, Missouri 

Pittsburgh Rebels 

1914-1915
Franchise: Pittsburgh Rebels 
Location: Pittsburgh, Pennsylvania 

Kansas City Packers 

1914-1915 
Franchise: Kansas City Packers 
Location: Kansas City, Missouri 

Brooklyn Tip-Tops 

1914-1915 
Franchise: Brooklyn Tip-Tops 
Location: Brooklyn, New York 

Buffalo Buffeds

1914-1914
Franchise: Buffalo Blues 
Location: Buffalo, New York  

Baltimore Terrapins

1914-1915 
Franchise: Baltimore Terrapins 
Location: Baltimore, Maryland 

Chicago Federals 

1914-1914 
Franchise: Chicago Whales
Location: Chicago, Illinois 

Indianapolis Hoosiers 

1884-1885; 1887-1900; 1914-1915 
Franchise: Indianapolis Hoosiers 
Location: Indianapolis, Indiana 

Brooklyn Robins 

1914-1931 
Franchise: Los Angeles Dodgers 
Location: Brooklyn, New York 

New York Yankees 

1913-Present 
Franchise: New York Yankees 
Location: New York City, New York 

Boston Braves 

1912-1935; 1943-1952 
Franchise: Atlanta Braves 
Location: Boston, Massachusetts 

Brooklyn Trolley Dodgers 

1911-1913 
Franchise: Los Angeles Dodgers 
Location: Brooklyn, New York 

Boston Rustlers 

1910-1911 
Franchise: Atlanta Braves 
Location: Boston, Massachusetts 

Boston Red Sox 

1909-Present 
Franchise: Boston Red Sox 
Location: Boston, Massachusetts 

Boston Doves 

1904-1909 
Franchise: Atlanta Braves 
Location: Boston, Massachusetts 

Chicago White Sox 

1904-Present 
Franchise: Chicago White Sox 
Location: Chicago, Illinois 

Chicago Cubs 

1903-Present 
Franchise: Chicago Cubs 
Location: Chicago, Illinois 

New York Highlanders 

1903-1912 
Franchise: New York Yankees 
Location: New York City, New York 

Cleveland Naps 

1902-1914 
Franchise: Cleveland Indians 
Location: Cleveland, Ohio 

Boston Americans (Commonly known as the Boston Pilgrims)

1901-1908 
Franchise: Boston Red Sox 
Location: Boston, Massachusetts 

Detroit Tigers 

1901-Present 
Franchise: Detroit Tigers 
Location: Detroit, Michigan 

Milwaukee Cream Citys 

1884-1884; 1891-1891; 1901-1901 
Franchise: Baltimore Orioles 
Location: Milwaukee, Wisconsin 

St. Louis Cardinals 

1900-Present 
Franchise: St. Louis Cardinals 
Location: St. Louis, Missouri 

Brooklyn Superbas 

1899-1910 
Franchise: Los Angeles Dodgers 
Location: Brooklyn, New York 

St. Louis Perfectos 

1899-1899 
Franchise: St. Louis Cardinals 
Location: St. Louis, Missouri 

Chicago Orphans 

1898-1902  
Franchise: Chicago Cubs 
Location: Chicago, Illinois 

Grand Rapid Rustlers 

1894-1899 
Franchise: Cleveland Indians 
Location: Grand Rapids, Michigan 

Washington Senators 

1892-1971 
Franchise: Texas Rangers and Minnesota Twins 
Location: Washington D.C

Washington Statesmen 

1891-1891 
Franchise: Texas Rangers and Minnesota Twins 
Location: Washington D.C. 

Cincinnati Kelly’s Killers 

1891-1891 
Franchise: Cincinnati Kelly’s Killers 
Location: Cincinnati, Ohio 

Pittsburgh Pirates 

1891-Present 
Franchise: Pittsburgh Pirates 
Location: Pittsburgh, Pennsylvania

Cleveland Infants 

1890-1890 
Franchise: Cleveland Infants 
Location: Cleveland, Ohio 

Pittsburgh Burghers 

1890-1890 
Franchise: Pittsburgh Burghers 
Location: Pittsburgh, Pennsylvania 

Chicago Pirates 

1890-1890
Franchise: Chicago Pirates 
Location: Chicago, Illinois 

Brooklyn Ward’s Wonders 

1890-1890 
Franchise: Brooklyn Ward’s Wonders 
Location: Brooklyn, New York 

Rochester Broncos 

1890-1890 
Franchise: Rochester Broncos 
Location: Rochester, Illinois 

Brooklyn Gladiators 

1890-1890 
Franchise: Brooklyn Gladiators 
Location: Brooklyn, New York 

Toledo Maumees 

1890-1890 
Franchise: Toledo Maumees 
Location: Toledo, Ohio 

Philadelphia Phillies 

1890-Present 
Franchise: Philadelphia Phillies 
Location: Philadelphia, Pennsylvania 

Chicago Colts 

1890-1897 
Franchise: Chicago Cubs 
Location: Chicago, Illinois 

Columbus Solons 

1889-1895 
Franchise: Columbus Solons 
Location: Columbus, Ohio 

Cleveland Spiders 

1889-1899 
Franchise: Cleveland Indians 
Location: Cleveland, Ohio 

Brooklyn Bridegrooms 

1888-1898 
Franchise: Los Angeles Dodgers 
Location: Brooklyn, New York 

Louisville Colonels 

1885-1886 
Franchise: Louisville Colonels 
Location: Louisville, Kentucky 

New York Giants 

1885-1957 
Franchise: San Francisco Giants 
Location: New York City, New York 

Kansas City Cowboys 

1884-1884 
Franchise: Kansas City Cowboys 
Location: Kansas City, Missouri 

Altoona Mountain Cities 

1884-1884 
Franchise: Altoona Mountain Cities 
Location: Altoona, Pennsylvania 

Pittsburgh Stogies 

1884-1884 
Franchise: Pittsburgh Stogies 
Location: Pittsburgh, Pennsylvania 

Chicago Browns 

1884-1884 
Franchise: Pittsburgh Stogies 
Location: Chicago, Illinois 

St. Paul Saints (Also known as St. Paul White Caps or St. Paul Apostles) 

1884-1884 
Franchise: St. Paul Saints 
Location: St. Paul, Minnesota 

Boston Reds 

1884-1884; 1890-1891 
Franchise: Boston Reds 
Location: Boston, Massachusetts 

Baltimore Monumentals 

1884-1884 
Franchise: Baltimore Monumentals 
Location: Baltimore, Maryland 

Cincinnati Outlaw Reds 

1884-1884 
Franchise: Cincinnati Outlaw Reds 
Location: Cincinnati, Ohio 

St. Louis Maroons 

1884-1886 
Franchise: St. Louis Maroons 
Location: St. Louis, Missouri 

Richmond Virginians 

1884-1885 
Franchise: Richmond Virginians 
Location: Richmond, Virginia 

Toledo Blue Stockings 

1884-1885 
Franchise: Toledo Blue Stockings 
Location: Toledo, Ohio 

St. Louis Browns 

1884-1898; 1902-1953 
Franchise: St. Louis Cardinals and Baltimore Orioles 
Location: St. Louis, Missouri 

Philadelphia Quakers 

1867-1867; 1883-1889 
Franchise: Philadelphia Phillies 
Location: Philadelphia, Pennsylvania 

New York Metropolitans (No relation to modern day New York Mets) 

1880-1887 
Franchise: New York Metropolitans 
Location: New York City, New York 

Columbus Buckeyes 

1883-1885 
Franchise: Columbus Buckeyes 
Location: Columbus, Ohio 

Louisville Eclipse 

1883-1884 
Franchise: Louisville Colonels 
Location: Louisville, Kentucky 

New York Gothams 

1883-1884 
Franchise: San Francisco Giants 
Location: New York City, New York 

Boston Beaneaters 

1883-1906 
Franchise: Atlanta Braves 
Location: Boston, Massachusetts

Cincinnati Red Stockings 

1867-1870; 1882-1889 
Franchise: Cincinnati Reds 
Location: Cincinnati, Ohio 

Pittsburgh Alleghenys 

1882-1890 
Franchise: Pittsburgh Pirates 
Location: Pittsburgh, Pennsylvania 

Philadelphia Athletics 

1866-1875; 1882-1954 
Franchise: Oakland Athletics 
Location: Philadelphia, Pennsylvania 

Detroit Wolverines 

1881-1900 
Franchise: Detroit Tigers 
Location: Detroit, Michigan 

Worcester Worcesters 

1880-1883 
Franchise: Worcester Worcesters 
Location: Worcester, Massachusetts 

Cincinnati Stars 

1880-1880 
Franchise: Cincinnati Stars 
Location: Cincinnati, Ohio 

Syracuse Stars 

1879-1879; 1890-1890 
Franchise: Syracuse Stars 
Location: Syracuse, New York 

Troy Trojans 

1879-1882 
Franchise: Troy Trojans 
Location: Troy, New York 

Cleveland Blues 

1879-1884; 1887-1888; 1901-1902 
Franchise: Cleveland Indians 
Location: Cleveland, Ohio 

Buffalo Bisons 

1879-1885; 1890-1890 
Franchise: Buffalo Bisons 
Location: Buffalo, New York 

Indianapolis Blues 

1878-1878 
Franchise: Indianapolis Blues
Location: Indianapolis, Indiana 

Providence Grays 

1878-1885 
Franchise: Providence Grays 
Location: Providence, Rhode Island 

Milwaukee Grays 

1878-1880 
Franchise: Milwaukee Grays 
Location: Milwaukee, Wisconsin 

Brooklyn Hartfords 

1877-1877 
Franchise: Brooklyn Hartfords 
Location: Brooklyn, New York 

Cincinnati Reds 

1876-1879; 1890-1953; 1956-Present 
Franchise: Cincinnati Reds 
Location: Cincinnati, Ohio 

Boston Red Caps 

1876-1882
Franchise: Atlanta Braves 
Location: Boston, Massachusetts 

Louisville Grays 

1876-1877 
Franchise: Louisville Grays 
Location: Louisville, Kentucky 

St. Louis Brown Stockings 

1875-1877; 1882-1883 
Franchise: St. Louis Cardinals 
Location: St. Louis, Missouri 

Philadelphia Centennials 

1875-1875 
Franchise: Philadelphia Centennials 
Location: Philadelphia, Pennsylvania 

Keokuk Westerns 

1875-1875 
Franchise: Keokuk Westerns 
Location: Keokuk, Iowa 

New Haven Elm Cities 

1875-1875 
Franchise: New Haven Elm Cities 
Location: New Haven, Connecticut

St. Louis Red Stockings 

1875-1875 
Franchise: St. Louis Cardinals 
Location: St. Louis, Missouri 

Hartford Dark Blues 

1874-1876; 1884-1884 
Franchise: Brooklyn Hartfords 
Location: Hartford, Connecticut

Brooklyn Atlantics (Commonly known as the Brooklyn Grays)

1866-1870; 1871-1875; 1884-1888
Franchise: Brooklyn Atlantics 
Location: Brooklyn, New York 

Washington Blue Legs 

1873-1873 
Franchise: Washington Blue Legs 
Location: Washington D.C. 

Baltimore Marylands 

1873-1873 
Franchise: Baltimore Marylands 
Location: Baltimore, Maryland 

Elizabeth Resolutes 

1873-1873 
Franchise: Elizabeth Resolutes 
Location: Elizabeth, New Jersey 

Middletown Mansfield 

1872-1872 
Franchise: Middletown Mansfield 
Location: Middletown, Connecticut

Baltimore Canaries (Commonly known as the Baltimore Lords)

1872-1874 
Franchise: Baltimore Canaries 
Location: Baltimore, Maryland 

Boston Red Stockings 

1871-1875 
Franchise: Atlanta Braves 
Location: Boston, Massachusetts

Fort Wayne Kekionga

1871-1871 
Franchise: Fort Wayne Kekionga 
Location: Fort Wayne, Indiana

Rockford Forest Citys 

1870-1871 
Franchise: Rockford Forest Citys 
Location: Rockford, Illinois 

Chicago White Stockings 

1870-1872; 1874-1889; 1901-1903 
Franchise: Chicago White Sox and Chicago Cubs 
Location: Chicago, Illinois 

Cleveland Forest Citys 

1869-1873 
Franchise: Cleveland Forest Citys 
Location: Cleveland, Ohio 

Cincinnati Buckeyes 

1867-1868 
Franchise: Cincinnati Buckeyes 
Location: Cincinnati, Ohio 

Chicago Excelsiors 

1867-1868 
Franchise: Chicago Excelsiors 
Location: Chicago Illinois 

Washington Olympics 

1867-1872 
Franchise: Washington Olympics 
Location: Washington D.C. 

Troy Haymakers 

1867-1872 
Franchise: Troy Haymakers 
Location: Troy, New York

Greenpoint Orientals 

1867-1867 
Franchise: Greenpoint Orientals 
Location: Greenpoint, New York 

Boston Tri-Mountains 

1867-1870 
Franchise: Boston Tri Mountains 
Location: Boston, Massachusetts

Philadelphia Gearys 

1867-1867 
Franchise: Philadelphia Gearys 
Location: Philadelphia, Pennsylvania 

Lansingburgh Unions 

1866-1866 
Franchise: Troy Trojans 
Location: Lansingburgh, New York 

Boston Lowells 

1866-1868 
Franchise: Boston Lowells 
Location: Boston, Massachusetts

Camden Camdens 

1866-1866 
Franchise: Camden Camdens 
Location: Camden, New Jersey 

New York Eagles 

1866-1866 
Franchise: New York Eagles 
Location: New York City, New York 

New York Empires 

1866-1866 
Franchise: New York Empires 
Location: New York City, New York 

Philadelphia Keystones 

1866-1869 
Franchise: Philadelphia Keystones 
Location: Philadelphia, Pennsylvania 

Newark Americus 

1866-1866 
Franchise: Newark Americus 
Location: Newark, New Jersey

Brooklyn Stars

1866-1868 
Franchise: Brooklyn Stars 
Location: Brooklyn, New York  

Brooklyn Mohawks 

1866-1866 
Franchise: Brooklyn Mohawks 
Location: Brooklyn, New York 

Irvington Irvingtons 

1866-1869 
Franchise: Irvington Irvingtons 
Location: Irvington, New Jersey 

Brooklyn Enterprises 

1866-1866 
Franchise: Brooklyn, New York 
Location: Brooklyn, New York 

Newark Eurakas 

1866-1868 
Franchise: Newark Eurakas 
Location: Newark, New Jersey 

Brooklyn Eckfords 

1866-1869 
Franchise: Brooklyn Eckfords 
Location: Brooklyn, New York 

New York Actives 

1866-1866 
Franchise: New York Actives 
Location: New York City, New York 

Brooklyn Excelsiors 

1866-1867 
Franchise: Brooklyn Excelsiors 
Location: Brooklyn, New York 

Morrisania Unions 

1866-1868 
Franchise: Morrisania Unions 
Location: Morrisania, New York