Anaheim Angels Logo
1997-2004 (8 seasons in MLB)
83-79 average record 1
Joined the American League as an expansion team to begin the 1961 season. Left Los Angeles and relocated to Anaheim to begin the 1966 season.
Arizona Diamondbacks Logo
1998-2018 (21 seasons in MLB)
79-81 average record 1
Joined the National League as an expansion team to begin the 1998 season.
Atlanta Braves Logo
1966-2018 (53 seasons in MLB)
81-77 average record 1
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Boston and relocated to Milwaukee to begin the 1953 season. Left Milwaukee and relocated to Atlanta to begin the 1966 season. Franchise currently exists as the Atlanta Braves.
Baltimore Orioles Logo
1901-2018 (118 seasons in MLB)
80-77 average record 3
Began as Milwaukee Brewers in 1894 and were one of the original AL franchises in 1901. Became St. Louis Browns in 1902 and relocated to Baltimore to become Orioles in 1954.
Boston Red Sox Logo
1908-2018 (111 seasons in MLB)
81-75 average record 7
One of the eight original American League teams beginning with the 1901 season.
Boston Braves Logo
1912-1952 (41 seasons in MLB)
68-83 average record 1
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Boston and relocated to Milwaukee to begin the 1953 season. Left Milwaukee and relocated to Atlanta to begin the 1966 season. Franchise currently exists as the Atlanta Braves.
Boston Bees Logo
1936-1940 (5 seasons in MLB)
71-81 average record
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Boston and relocated to Milwaukee to begin the 1953 season. Left Milwaukee and relocated to Atlanta to begin the 1966 season. Franchise currently exists as the Atlanta Braves.
Boston Rustlers Logo
1911-1911 (1 season in MLB)
44-107 record
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Boston and relocated to Milwaukee to begin the 1953 season. Left Milwaukee and relocated to Atlanta to begin the 1966 season. Franchise currently exists as the Atlanta Braves.
Boston Doves Logo
1907-1910 (4 seasons in MLB)
55-97 average record
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Boston and relocated to Milwaukee to begin the 1953 season. Left Milwaukee and relocated to Atlanta to begin the 1966 season. Franchise currently exists as the Atlanta Braves.
Boston Americans Logo
1901-1907 (7 seasons in MLB)
75-70 average record 1
One of the eight original American League teams beginning with the 1901 season.
Boston Beaneaters Logo
1901-1906 (6 seasons in MLB)
59-86 average record
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Boston and relocated to Milwaukee to begin the 1953 season. Left Milwaukee and relocated to Atlanta to begin the 1966 season. Franchise currently exists as the Atlanta Braves.
Brooklyn Dodgers Logo
1913-1957 (45 seasons in MLB)
85-69 average record 1
Left the American Association to join the National League to begin the 1890 season. Left Brooklyn and relocated to Los Angeles to begin the 1957 season. Franchise currently exists as the Los Angeles Dodgers.
Brooklyn Robins Logo
1914-1931 (18 seasons in MLB)
76-75 average record
Left the American Association to join the National League to begin the 1890 season. Left Brooklyn and relocated to Los Angeles to begin the 1957 season. Franchise currently exists as the Los Angeles Dodgers.
Brooklyn Trolley Dodgers Logo
1911-1912 (2 seasons in MLB)
61-91 average record
Left the American Association to join the National League to begin the 1890 season. Left Brooklyn and relocated to Los Angeles to begin the 1957 season. Franchise currently exists as the Los Angeles Dodgers.
Brooklyn Superbas Logo
1901-1910 (10 seasons in MLB)
63-85 average record
Left the American Association to join the National League to begin the 1890 season. Left Brooklyn and relocated to Los Angeles to begin the 1957 season. Franchise currently exists as the Los Angeles Dodgers.
California Angels Logo
1965-1996 (32 seasons in MLB)
76-82 average record
Joined the American League as an expansion team to begin the 1961 season. Left Los Angeles and relocated to Anaheim to begin the 1966 season.
Chicago Cubs Logo
1903-2018 (116 seasons in MLB)
79-77 average record 2
Left the National Association to become one of 8 founding clubs of the National League in 1876.
Chicago White Sox Logo
1901-2018 (118 seasons in MLB)
78-77 average record 3
One of the eight original American League teams beginning with the 1901 season.
Chicago Orphans Logo
1901-1902 (2 seasons in MLB)
61-78 average record
Left the National Association to become one of 8 founding clubs of the National League in 1876.
Cincinnati Reds Logo
1901-2018 (118 seasons in MLB)
78-78 average record 5
Left the American Association to join the National League to begin the 1890 season. Franchise currently exists as the Cincinnati Reds.
Cincinnati Redlegs Logo
1954-1959 (6 seasons in MLB)
78-76 average record
Left the American Association to join the National League to begin the 1890 season. Franchise currently exists as the Cincinnati Reds.
Cleveland Indians Logo
1915-2018 (104 seasons in MLB)
80-76 average record 2
One of the eight original American League teams beginning with the 1901 season.
Cleveland Naps Logo
1903-1914 (12 seasons in MLB)
78-74 average record
One of the eight original American League teams beginning with the 1901 season.
Cleveland Bronchos Logo
1902-1902 (1 season in MLB)
69-67 record
One of the eight original American League teams beginning with the 1901 season.
Cleveland Blues Logo
1901-1901 (1 season in MLB)
54-82 record
One of the eight original American League teams beginning with the 1901 season.
Colorado Rockies Logo
1993-2018 (26 seasons in MLB)
74-83 average record
Joined the National League as an expansion team to begin the 1993 season.
Detroit Tigers Logo
1901-2018 (118 seasons in MLB)
79-77 average record 4
One of the eight original American League teams beginning with the 1901 season.
Florida Marlins Logo
1993-2011 (19 seasons in MLB)
76-83 average record 2
Joined the National League as an expansion team to begin the 1993 season.
Houston Astros Logo
1965-2018 (54 seasons in MLB)
79-80 average record
Joined the National League as an expansion team to begin the 1962 season. Moved to the American League in 2013 in order to faciliate MLB divisional realignment.
Houston Colt .45's Logo
1962-1964 (3 seasons in MLB)
65-96 average record
Joined the National League as an expansion team to begin the 1962 season. Moved to the American League in 2013 in order to faciliate MLB divisional realignment.
Kansas City Royals Logo
1969-2018 (50 seasons in MLB)
76-82 average record 1
Joined the American League as an expansion team to begin the 1969 season.
Kansas City Athletics Logo
1955-1967 (13 seasons in MLB)
64-94 average record
One of the eight original American League teams beginning with the 1901 season. Left Philadelphia to relocate in Kansas City to begin the 1955 season. Left Kansas City to relocate to Oakland to begin the 1968 season.
Los Angeles Dodgers Logo
1958-2018 (61 seasons in MLB)
85-73 average record 5
Left the American Association to join the National League to begin the 1890 season. Left Brooklyn and relocated to Los Angeles to begin the 1957 season. Franchise currently exists as the Los Angeles Dodgers.
Los Angeles Angels Logo
1961-2017 (57 seasons in MLB)
77-85 average record
Joined the American League as an expansion team to begin the 1961 season. Left Los Angeles and relocated to Anaheim to begin the 1966 season.
Los Angeles Angels of Anaheim Logo
2005-2015 (11 seasons in MLB)
90-72 average record
Joined the American League as an expansion team to begin the 1961 season. Left Los Angeles and relocated to Anaheim to begin the 1966 season.
Miami Marlins Logo
2012-2018 (7 seasons in MLB)
69-86 average record
Joined the National League as an expansion team to begin the 1993 season.
Milwaukee Brewers Logo
1901-2018 (118 seasons in MLB)
76-82 average record
Began as Milwaukee Brewers in 1894 and were one of the original AL franchises in 1901. Became St. Louis Browns in 1902 and relocated to Baltimore to become Orioles in 1954.
Milwaukee Braves Logo
1953-1965 (13 seasons in MLB)
88-68 average record 1
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Boston and relocated to Milwaukee to begin the 1953 season. Left Milwaukee and relocated to Atlanta to begin the 1966 season. Franchise currently exists as the Atlanta Braves.
Minnesota Twins Logo
1961-2018 (58 seasons in MLB)
78-80 average record 2
One of the eight original American League teams beginning with the 1901 season. Left Washington DC to relocate to Minnesota to begin the 1961 season.
Montreal Expos Logo
1969-2004 (36 seasons in MLB)
77-82 average record
Joined the National League as an expansion team to begin the 1969 season. Left Montreal and relocated to Washington DC to begin the 2005 season.
New York Mets Logo
1962-2018 (57 seasons in MLB)
76-83 average record 2
Joined the National League as an expansion team to begin the 1962 season.
New York Yankees Logo
1913-2018 (106 seasons in MLB)
90-66 average record 27
One of the eight original American League teams beginning with the 1901 season. Left Baltimore and relocated to New York to begin the 1903 season.
New York Giants Logo
1901-1957 (57 seasons in MLB)
84-67 average record 5
Entered the National League in 1883. Left New York and relocated to San Francisco to begin the 1958 season.
New York Highlanders Logo
1903-1912 (10 seasons in MLB)
73-76 average record
One of the eight original American League teams beginning with the 1901 season. Left Baltimore and relocated to New York to begin the 1903 season.
Oakland Athletics Logo
1968-2018 (51 seasons in MLB)
82-76 average record 4
One of the eight original American League teams beginning with the 1901 season. Left Philadelphia to relocate in Kansas City to begin the 1955 season. Left Kansas City to relocate to Oakland to begin the 1968 season.
Philadelphia Phillies Logo
1901-2017 (117 seasons in MLB)
72-83 average record 2
Entered the National League in 1883. Franchise currently exists as the Philadelphia Phillies.
Philadelphia Athletics Logo
1901-1954 (54 seasons in MLB)
72-79 average record 5
One of the eight original American League teams beginning with the 1901 season. Left Philadelphia to relocate in Kansas City to begin the 1955 season. Left Kansas City to relocate to Oakland to begin the 1968 season.
Philadelphia Blue Jays Logo
1943-1944 (2 seasons in MLB)
63-91 average record
Entered the National League in 1883. Franchise currently exists as the Philadelphia Phillies.
Pittsburg Pirates Logo
1901-1911 (11 seasons in MLB)
94-56 average record 1
Left the American Association to join the National League to begin the 1887 season. Franchise currently exists as the Pittsburgh Pirates.
Pittsburgh Pirates Logo
1912-2018 (107 seasons in MLB)
77-78 average record 4
Left the American Association to join the National League to begin the 1887 season. Franchise currently exists as the Pittsburgh Pirates.
San Diego Padres Logo
1969-2018 (50 seasons in MLB)
73-85 average record
Joined the National League as an expansion team to begin the 1969 season.
San Francisco Giants Logo
1958-2018 (61 seasons in MLB)
82-77 average record 2
Entered the National League in 1883. Left New York and relocated to San Francisco to begin the 1958 season.
Seattle Mariners Logo
1977-2018 (42 seasons in MLB)
74-83 average record
Joined the American League as an expansion team to begin the 1977 season.
Seattle Pilots Logo
1969-1969 (1 season in MLB)
64-98 record
Joined the American League as an expansion team to begin the 1969 season. Left Seattle and relocated to Milwaukee to begin the 1970 season. Moved to the National League in 1998 in order to faciliate MLB divisional realignment.
St. Louis Cardinals Logo
1901-2018 (118 seasons in MLB)
81-74 average record 11
After the American Association folded, they joined the National League in 1892. Franchise currently exists as the St. Louis Cardinals.
St. Louis Browns Logo
1902-1953 (52 seasons in MLB)
66-86 average record
Began as Milwaukee Brewers in 1894 and were one of the original AL franchises in 1901. Became St. Louis Browns in 1902 and relocated to Baltimore to become Orioles in 1954.
Tampa Bay Rays Logo
2008-2018 (11 seasons in MLB)
83-74 average record
Joined the American League as an expansion team to begin the 1998 season.
Tampa Bay Devil Rays Logo
1998-2007 (10 seasons in MLB)
65-97 average record
Joined the American League as an expansion team to begin the 1998 season.
Texas Rangers Logo
1972-2018 (47 seasons in MLB)
78-80 average record
Joined the American League as an expansion team to begin the 1961 season. Left Washington DC and relocated to Arlington in 1972.
Toronto Blue Jays Logo
1977-2018 (42 seasons in MLB)
78-79 average record 2
Joined the American League as an expansion team to begin the 1977 season.
Washington Nationals Logo
2005-2018 (14 seasons in MLB)
79-79 average record
Joined the National League as an expansion team to begin the 1969 season. Left Montreal and relocated to Washington DC to begin the 2005 season.
Washington Senators Logo
1901-1971 (71 seasons in MLB)
70-83 average record 1
One of the eight original American League teams beginning with the 1901 season. Left Washington DC to relocate to Minnesota to begin the 1961 season.

Subscribe to our monthly Sports History Newsletter

LEAVE A COMMENT