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Northwest Region Tournament (2001-2021)
| Year | Result |
| 2026 | Soundview (Tacoma, Washington) 8, West Valley (Eagle, Idaho) 5 |
| 2025 | Bonney Lake/Sumner (Washington) 6, Murrayhill (Beaverton, Oregon) 1 |
| 2024 | South Hill (Puyallup, Washington) 13, West Valley (Eagle, Idaho) 7 |
| 2023 | Northeast Seattle (Washington) 12, Dimond-West (Anchorage, Alaska) 1 (5 innings) |
| 2022 | Bonney Lake/Sumner (Washington) 3, Bend North (Oregon) 2 (7 innings) |
| 2021 | Eastlake (Sammamish, Washington) 2, Lake Oswego (Oregon) 1 |
| 2020 | International tournament not held due to Covid-19 pandemic |
| 2019 | Sprague (Salem, Oregon) 5, Coeur d'Alene (Idaho) 4 |
| 2018 | Coeur d'Alene (Idaho) 2, Boulder Arrowhead (Billings, Montana) 0 |
| 2017 | Walla Walla Valley (Walla Walla, Washington) 4, LaGrande (Oregon) 3 |
| 2016 | Bend North (Oregon) 5, Lynnwood Pacific (Lynnwood, Washington) 1 |
| 2015 | Wilshire/Riverside (Portland, Oregon) 15, West Valley (Eagle, Idaho) 3 (6 innings) |
| 2014 | Lynnwood Pacific (Lynnwood, Washington) 6, Bend North (Oregon) 3 |
| 2013 | Eastlake (Sammamish, Washington) 13, Billings Big Sky (Montana) 1 (4 innings) |
| 2012 | Gresham National (Oregon) 8, Post Falls (Idaho) 4 |
| 2011 | Billings Big Sky (Montana) 7, Bend South (Oregon) 1 |
| 2010 | Auburn (Washington) 13, North Boise (Idaho) 3 (4 innings) |
| 2009 | Mercer Island (Washington) 8, Parrish (Salem, Oregon) 3 |
| 2008 | Mill Creek (Washington) 10, Murrayhill (Beaverton, Oregon) 1 |
| 2007 | Lake Oswego (Oregon) 6, Kent (Washington) 2 |
| 2006 | Murrayhill (Beaverton, Oregon) 5, Dimond-West (Anchorage, Alaska) 4 (7 innings) |
| 2005 | West Oahu (Ewa Beach, Hawaii) 12, Northwest Ada (Boise, Idaho) 1 (6 innings) |
| 2004 | Redmond North (Washington) 6, West Valley (Eagle, Idaho) 3 |
| 2003 | Richland National (Washington) 5, Pearl City (Hawaii) 0 |
| 2002 | Waipio (Waipahu, Hawaii) 5, Coeur d'Alene (Idaho) 2 |
| 2001 | Bainbridge Island (Washington) 5, West Salem (Oregon) 4 |
Western Region Tournament (1957-2000)
| Year | Result |
| 2000 | Hazel Dell (Washington) 3, Ocean View (Huntington Beach, Southern California) 2 |
| 1999 | South Central Boise (Idaho) 3, Airport (Sacramento, Northern California) 1 |
| 1998 | Cypress Federal (Southern California) 3, Woodinville West (Washington) 1 (7 innings) |
| 1997 | South Mission Viejo (Southern California) 2, Sunnyvale National (Northern California) 1 |
| 1996 | Moorpark (Southern California) 2, Pearl City (Hawaii) 1 |
| 1995 | Yorba Hills (Yorba Linda, Southern California) 5, Petaluma Valley (Northern California) 3 |
| 1994 | Northridge City (Southern California) 17, Nanakuli-Maili (Waianae, Hawaii) 7 |
| 1993 | Long Beach (Southern California) 5, San Ramon Valley (Danville, Northern California) 2 |
| 1992 | Long Beach (Southern California) 11, San Ramon Valley (Danville, Northern California) 3 |
| 1991 | San Ramon Valley (Danville, Northern California) 3, East Maui (Kahulia, Hawaii) 0 |
| 1990 | Cypress Federal (Southern California) 3, East Boise (Idaho) 2 |
| 1989 | Eastview (San Pedro, Southern California) 3, Pearl City (Hawaii) 2 |
| 1988 | Pearl City (Hawaii) 10, East Boise (Idaho) 1 |
| 1987 | Northwood (Irvine, Southern California) 15, San Benito County (Hollister, Northern California) 0 |
| 1986 | Tucson International (Arizona) 5, Marysville (Washington) 2 |
| 1985 | Mexicali, Mexico (Southern California) 2, Danville (Northern California) 0 |
| 1984 | Los Gatos (Northern California) 1, Sunnyside (Tucson, Arizona) 0 |
| 1983 | Pacific (Sacramento, Northern California) 8, Green Valley (Henderson, Nevada) 3 |
| 1982 | Kirkland National (Washington) 3, South Bay (Chula Vista, Southern California) 1 |
| 1981 | Escondido National (Southern California) 5, Kennewick (Washington) 4 (7 innings) |
| 1980 | Kirkland National (Washington) 2, Sunshine (San Diego, California) 0 |
| 1979 | Campbell (Northern California) 11, Goleta Valley South (Southern California) 3 |
| 1978 | San Ramon Valley (Danville, Northern California) 6, Kailua National (Hawaii) 0 |
| 1977 | El Cajon Western (Southern California) 5, Raleigh Hills (Beaverton, Oregon) 4 (7 innings) |
| 1976 | Campbell (Northern California) 6, Pearl City (Hawaii) 2 |
| 1975 | Northridge American (Northern California) 6, Kailua (Hawaii) 1 |
| 1974 | Red Bluff (Northern California) 5, San-Ri (San Bernardino/Rialto, Southern California) 4 |
| 1973 | Cactus (Tucson, Arizona) 1, Concord National (California) 0 |
| 1972 | Pearl City (Hawaii) 13, Portland Northeast (Oregon) 4 (7 innings) |
| 1971 | Wahiawa (Hawaii) 4, Cupertino American (Northern California) 3 |
| 1970 | Campbell (Northern California) 4, Kaneohe (Hawaii) 3 (8 innings) |
| 1969 | Briarwood (Santa Clara, Northern California) 4, Cajon de Oro (El Cajon, Southern California) 3 |
| 1968 | Bolsa (Garden Grove, Southern California) 4, Santa Clara Westside (Northern California) 3 (7 innings) |
| 1967 | Northridge City (Southern California) 5, Ravenswood (East Palo Alto, Northern California) 1 |
| 1966 | Airport (Sacramento, Northern California) 9, Eastside Optimist (Roswell, New Mexico) 4 |
| 1965 | South Mountain-East Side (Phoenix, Arizona) 3, South Suburban (Klamath Falls, Oregon) 1 |
| 1964 | La Puente National (Southern California) 4, Trail (British Columbia) 3 |
| 1963 | Granada Hills National (Southern California) 2, Sahuaro (Tucson, Arizona) 0 |
| 1962 | Campbell-Moreland (Northern California) 3, Kailua National (Hawaii) 1 |
| 1961 | El Cajon Northern (Southern California) 5, Concord National (Northern California) 1 |
| 1960 | East Lakewood (Southern California) 10, South Boulder (Colorado) 4 |
| 1959 | Auburn (Northern California) 11, Alcoa (Vancouver, Washington) 3 |
| 1958 | Rose City (Portland, Oregon) 2, Town and Country (Sacramento, California) 0 |
| 1957 | La Mesa Northern (California) 18, Ephrata-Soap Lake (Washington) 0 |