Other concurrent baseball leagues:    
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F i l t e r   &   S o r t 
a.k.a. Beaneaters
1876-1900 25 8
Left the National Association to become one of 8 founding clubs of the NL in 1876. Left Boston and relocated to Milwaukee in 1953. Left Milwaukee to become the Atlanta Braves in 1966.
a.k.a. Colts, Orphans
1876-1900 25 6
Left the National Association to become one of 8 founding clubs of the National League in 1876.
1890-1900 11
Left the American Association to join the National League to begin the 1890 season. Franchise currently exists as the Cincinnati Reds.
a.k.a. Superbas
1890-1900 11 3
Left the American Association to join the National League to begin the 1890 season. Left Brooklyn and relocated to become the Los Angeles Dodgers in 1957.
a.k.a. Phillies
1883-1900 18
Entered the National League in 1883. Franchise currently exists as the Philadelphia Phillies.
a.k.a. Pirates
1887-1900 14
Left the American Association to join the National League to begin the 1887 season. Franchise currently exists as the Pittsburgh Pirates.
a.k.a. Giants
1883-1900 18 3
Entered the National League in 1883. Left New York and relocated to San Francisco to begin the 1958 season.
a.k.a. Cardinals, Perfectos
1892-1900 9
After the American Association folded, they joined the National League in 1892. Franchise currently exists as the St. Louis Cardinals.
1889-1899 11 1
Left the American Association to join the National League to begin the 1889 season. Folded at the end of the 1899 season when the National League contracted back to 8 teams.
1892-1899 8
Joined the National League in 1892 after the American Association folded. Player contracts were purchased by the Pittsburgh Pirates at the end of 1899 when the NL contracted to 8 teams.
1892-1899 8
Joined the National League after the American Association folded following the 1891 season. Franchise folded at the end of the 1899 season when the NL contracted back to 8 teams.
1892-1899 8 1
After the American Association folded, they joined the National League in 1892. In 1899, the NL eliminated four teams, the Orioles among them.
1887-1889 3
Only team to continue after the Union Associaton folded in 1884, joining the National League in 1885. Left St. Louis for Indianapolis to begin the 1887 season. Folded following the 1889 season.
1886-1889 4
After 4 years in the National League, the franchise folded following the 1889 season.
1881-1888 8 1
After 8 years in the National League, the franchise folded following the 1888 season.
1886-1886 1
Admitted to the National League on a trial basis for the 1886 season. The league disbanded the team after one year and admitted the Pittsburg Alleghenys from the American Association.
1885-1886 2
Only team to continue after the Union Associaton folded in 1884, joining the National League in 1885. Left St. Louis for Indianapolis to begin the 1887 season. Folded following the 1889 season.
1879-1885 7
After 7 years in the National League, the franchise folded and sold all player contracts to the Detroit Wolverines following the 1885 season.
1878-1885 8 2
After 8 years in the National League, the franchise folded following the 1885 season.
1879-1884 6
After 6 years in the National League, the franchise folded and sold all player contracts to the Brooklyn Grays following the 1884 season.
1879-1882 4
After 4 years in the National League, the franchise folded following the 1882 season.
1880-1882 3
After 3 years in the National League, the franchise folded following the 1882 season.
1880-1880 1
One year after joining the league to replace Reds franchise, the Stars were dropped from the NL after ownership refused to sign a league pledge that banned alcohol in league parks.
One of 8 teams that founded the National League in 1876. Folded in 1890 after being expelled due to scheduling games on Sundays and the marketing of the beer sales.
1879-1879 1
After its only year in the National League, the franchise folded following the 1879 season.
1878-1878 1
After its only year in the National League, the franchise folded following the 1878 season.
1878-1878 1
After its only year in the National League, the franchise folded following the 1878 season.
1877-1877 1
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Hartford and relocated to Brooklyn in 1877 and folded after the season.
1876-1877 2
One of 8 teams that founded the National League in 1876. Franchise folded following the 1877 season when four players were banned for gambling.
One of 8 teams that founded the National League in 1876. Franchise folded following the 1877 season when two players were banned for gambling.
1876-1876 1
Left the National Association to become one of 8 founding clubs of the National League in 1876. Left Hartford and relocated to Brooklyn in 1877 and folded after the season.
1876-1876 1
Left the National Association to become one of 8 founding clubs of the National League in 1876. Folded after being expelled for failing to complete its final road trip of the 1876 season.
Left the National Association to become one of 8 founding clubs of the National League in 1876. Folded after being expelled for failing to complete final road trip of the 1876 season.