Northwestern League

Introduction

The Northwestern League was a minor league baseball league that operated in the central United States during the late 19th century. There was an unrelated league with the same name that was formed in 1879. The league that is the subject of this page was formed in 1883 (143 years ago).

The Northwestern League is considered the first “minor league” as it had an agreement with the National League and American Association to honor player suspensions, reserve clauses, and was a party to the National Agreement of 1883. The agreement expected each team to respect the reserve lists of clubs in each league. Teams in the NL and the AA could only reserve players who had been paid at least $1,000. Northwestern League teams could reserve players paid $750, implicitly establishing the division of major and minor leagues. Over the next two decades, more minor leagues signed various versions of the National Agreement. Eventually, the minor leagues allied to negotiate jointly.

The Northwestern League lasted only a total of four seasons, playing two seasons, going on hiatus for one season (in 1885 when a number of new Baseball leagues started up), and then playing two more seasons before folding for good. The league’s legacy is that it was the first official minor league ever created and a number of its teams (Milwaukee Cream Citys, St. Paul Saints, Des Moines Hawkeyes, Minneapolis Millers) joined teams from the Western League to form the Western Association in 1888 .

Classification

Top Minor League

Seasons Summary

* Season Disruptions tracked is 2 out of 5 Years (league on hiatus; teams joining or disbanding in-season; season or league folding before all games played)

League Championship Summary

# of seasons: 4

List of teams who won championships sorted by number of championships.

Future Features

Last Updated on May 24, 2026 by Al Young