League Note
The Cincinnati Red Stockings lost in regular season play to defending champion Brooklyn Atlantic, so was not able to claim the championship
Mutual of New York was leading, 13–12, in the deciding game of its series with the Chicago White Stockings when Mutual left the field in protest. Officials decided to revert the score to the end of the last completed inning and awarded the game, and thus the championship, to Chicago
Dozens of amateur teams, although members of the association, are omitted here. Standings were now determined by winning percentage, rather than by number of total wins, as in years past. Historical records of game results and player statistics may be missing or incomplete. Union and Atlantic clubs played one tie game.
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