The St. Louis Maroons of the Union Association joined the National League, in place of the disbanding Cleveland Blues.
The twelve-team American Association would contract down to eight teams, with the Columbus Buckeyes, Indianapolis Hoosiers, and Toledo Blue Stockings folding, while the late-entry Richmond Virginians returned to the Minor Leagues.
The National League's New York Gothams renamed as the New York Giants, and the American Association's Brooklyn Atlantics and Louisville Eclipse renamed as the Brooklyn Grays and Louisville Eclipse, respectively.
American Association Opening Day took place on April 18 featuring four teams, while National League Opening Day took place on April 30, with a game between the Chicago White Stockings and St. Louis Maroons.
The American Association would see its final day of the regular season on October 5 with a game between the Brooklyn Grays and Philadelphia Athletics, while the National League would see its final day of the season on October 10, featuring four teams.