The American Association was a major league of professional baseball which existed from 1882 to 1891. Together with the National League, the American Association contested the World Series.

Pennant winners of the AA

• 1882 Cincinnati Red Stockings
• 1883 Philadelphia Athletics
• 1884 New York Metropolitans
• 1885 St. Louis Brown Stockings
• 1886 St. Louis Brown Stockings
• 1887 St. Louis Brown Stockings
• 1888 St. Louis Brown Stockings
• 1889 Brooklyn Bridegrooms
• 1890 Louisville Colonels
• 1891 Boston Reds

American Association franchises

• Baltimore Orioles (1882-1891)
• Cincinnati Red Stockings (1882-1889)
• Eclipse of Louisville (1882-1883)
• Louisville Colonels (1883-1891)
• Philadelphia Athletics (1882-1890)
• Pittsburgh Alleghenys (1882-1887)
• St. Louis Brown Stockings (1882-1891)
• Columbus Colts (1883) / Columbus Senators (1884)
• New York Metropolitans (1883-1887)
• Brooklyn Bridegrooms (1884-1889)
• Indianapolis Blues (1884)
• Richmond Virginias (1884)
• Toledo Blue Stockings (1884)
• Washington Statesmen (1884)
• Cleveland Spiders (1887-1888)
• Kansas City Cowboys (1888-1889)
• Columbus Colts / Columbus Salons (1890-1891)
• Brooklyn Gladiators (1890)
• Rochester Hop Bitters (1890)
• Syracuse Stars (1890)
• Toledo Maumees (1890)
• Boston Reds (1891)
• Cincinnati Porkers (1891)
• Milwaukee Brewers
• Washington Senators (1891)

Timeline

• 1887-Pittsburgh Alleghenys leave AA to join NL
• 1889-Cleveland Spiders leave AA to join NL
• 1890-Cincinnati Red Stockings and Brooklyn Bridegrooms leave AA to join NL
• 1892-Baltimore Orioles, Louisville Colonels, St.Louis Brown Stockings, and Washington Senators join National League after the folding of the AA

AA Presidents

• H.D. McKnight 1882-1885
• Wheeler C. Wyckoff 1886-1889
• Zach Phelps 1890
• Louis Kramer 1891
• Ed Renau 1891
• Zach Phelps 1891