Outlaw league

An outlaw league is a league that does not honor the contracts and agreements of Organized Baseball. Prominent past examples were the 1900 American League and 1940s and early 1950s Mexican League. Many outlaw leagues led to legal disputes with their signing of players felt to be under contract with established OB clubs.

The Provincial League, which was in and out of organized baseball from the 1930s to the early 1970s, was considered an outlaw league during the periods it was not in organized baseball, because it operated as an independent league before that concept had gained legitimacy.