2024 - Asotin County (Asotin)
2023 - Walla Walla Valley
2022 - Walla Walla Valley
2021 - Walla Walla Valley
2020 - International tournament not held due to Covid-19 pandemic
2019 - Walla Walla Valley
2018 - Walla Walla Pacific
2017 - Walla Walla Valley
2016 - Walla Walla Valley
2015 - Walla Walla Valley
2014 - Walla Walla Pacific
2013 - Walla Walla Pacific
2012 - Walla Walla Valley
2011 - Asotin County (Asotin)
2010 - Walla Walla Pacific
2009 - Walla Walla Valley
2008 - Walla Walla Valley
2007 - Walla Walla Pacific
2006 - Asotin County (Asotin)
2005 - Walla Walla Valley
2004 - Richland National
2003 - Richland National
2002 - Greater Richland National
2001 - Greater Richland
2000 - Richland American
1999 - Richland National
1998 - Selah National
1997 - Walla Walla National
1996 - Pasco National Suns
1995 - Pasco National
1994 - Walla Walla American
1993 - Yakima National West
1992 - Yakima National South
1991 - Kennewick National
1990 - Kennewick National
1989 - Kennewick American
1988 - Kennewick National
1987 - Kennewick American
1986 - Columbia (Richland)
1985 - Kennewick National
1984 - Richland National
1983 - Richland American
1982 - Columbia (Richland)
1981 - Kennewick National
1980 - Yakima National South
1979 - Yakima National South
1978 - Yakima National
1977 - Walla Walla Pacific
1976 - Kennewick National
1975 - Yakima National
1974 - Richland National
1973 - Richland American
1972 - Richland National
1971 - Kennewick American
1970 - Walla Walla Pacific
1969 - Columbia (Richland)
1968 - Kennewick American
1967 - Kennewick National
1966 - Yakima National
1965 - Kennewick National
1964 - Columbia (Richland)
1963 - Kennewick American
1962 - Kennewick National
1961 - Richland American
1960 - Richland National
1959 - Kennewick National

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