Northwest League of Professional Baseball (or simply the Northwest League or NWL) founded in 1955 is a Class A-Short Season minor baseball league.
The league is the descendant of the Western International League (WIL), which ran as a class B league from 1937–1951 (with time out for World War II),
and class A from 1952–1954.
The league is classified as a Short-Season A league, which means that its season does not start until June, after major-league teams have signed their
amateur draft picks to professional contracts, and ends in September. It has eight teams, each of which is associated with an MLB team.
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