Idaho and Boise State dropped varsity baseball after the 1980 season,[11][12] as did Seattle U., and the five-team Nor-Pac played a seventh and final season in 1981.[10] Puget Sound dropped its program and the remaining four (GU, EWU, PSU, UP) joined the Northern division of the Pac-10 (as affiliate members, baseball only) for 1982;[13][14][15]Oregon also discontinued baseball after 1981,[16][17] which had left just three teams (Washington, Washington State, and Oregon State). In the Pac-10, the champion of the seven-team Northern division met the runner-up of the stronger six-team Southern division in a best-of-three series for the conference's second berth in the NCAA tournament.
Eastern Washington dropped baseball in 1990,[18][19] and Portland State eight years later; after 1995, Gonzaga and Portland moved their baseball to the West Coast Conference (WCC), where their other sports were.[20] Baseball returned at Oregon in 2009,[21] Seattle U. in 2010, and briefly at Boise State for a pandemic-shortened 2020 season before being eliminated a second time due to a budget reduction..