The American Association of Base Ball Clubs (AA) was a professional baseball league that existed for 10 seasons from 1882 to 1891.
In contrast to the NL, the AA offered cheaper ticket prices, Sunday games and alcoholic beverages to its patrons.
The NL at that time prohibited the sale of alcohol on its grounds, while the AA had no such restrictions, especially as several of its teams were backed by breweries and distilleries.
The AA became known as "The Beer and Whiskey League", another pejorative term applied by NL owners, which did not seem to bother the fans of the Association's clubs.
These early Series were less organized than the modern version, with as few as three games played and as many as fifteen, and the contests of 1885 and 1890 ending in disputed ties.
In a rare historical oddity, the Brooklyn Bridegrooms (now the Los Angeles Dodgers) won the league's championship and represented the AA in the 1889 World Series, switched to the NL during the off-season, and then repeated the same feat.