Beer is a fermented alcoholic beverage which is commonly consumed at baseball games, among many other places. Several MLB stadiums share their names with brands of beer, including: Miller Park, Coors Field, and Busch Stadium. The sale of beer was a major area of conflict between the National League and American Association in the 1880s. The NL opposed the sale, while the AA approved alcohol at the stadium.
The sale of cheap beer was the heart of one of the most infamous riots to take place in a major league ballpark, 10-cent beer night, which resulted in a forfeit at Cleveland Municipal Stadium on June 4, 1974.