Pacific-12 Conference

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Pac12logo.jpg

The roots of the Pacific-10 Conference go back to 1915, when the Pacific Coast Conference (PCC) was founded. Original membership consisted of four schools - the University of California at Berkeley, the University of Washington, the University of Oregon, and Oregon State College (now Oregon State University). Washington State joined in 1917 and Stanford in 1918. In 1922, the PCC expanded to eight teams with the admission of the University of Southern California and the University of Idaho. Montana joined the Conference in 1924, and in 1928, the PCC grew to 10 members with the addition of UCLA. Montana left in 1950 and in 1959 the conference dissolved. A new Conference was formed - the Athletic Association of Western Universities consisting of California, Stanford, Southern California, UCLA, and Washington. Washington State joined in 1962, and Oregon and Oregon State joined in 1964. In 1968, the name Pacific-8 Conference was adopted. In 1978, the University of Arizona and Arizona State University were admitted and the Pacific-10 Conference name was adopted.

Much of the PCC/Pac-10's baseball history includes teams that competed in baseball only. From 1927 to 1966 and again 1976, the California schools competed in the California Intercollegiate Baseball Association along with traditionally non-conference schools like Santa Clara University (1927-1966), St. Mary's (1927-1950), University of San Francisco (1931-1932, 1943), and UC Santa Barbara (1964-1966, 1976). The northern schools then competed in the aptly-named Northern Division. The University of Oregon dropped baseball after the 1981 season. Reviving history, the University of Portland, Gonzaga University, Portland State University, and Eastern Washington University joined the conference in baseball only in 1982. EWU dropped out in 1990, GU and UP in 1995, and PSU after the 1998. Oregon brought baseball back in 2009. The University of Utah joins in the 2011-2012 school year and the University of Colorado joins the conference in 2011-2012, but UC does not sponsor baseball.

Former logo until 2011
Former logo until 2010

On July 1, 2011, the conference oficially became the Pac 12. At the end of June 2022, the conference was rocked when USC and UCLA announced they would leave the Pac 12 to join the Big 10 Conference in the 2024-2025 school year, yet another move driven by football and media revenue. In July 2023, Colorado (a non-baseball school) left for the Big 12 Conference. On August 4, 2023 it was announced the Washington and Oregon were following USC and UCLA to the Big 10, leaving the conference in dire straits. At that point rumors swirled about Arizona, Arizona State, and Utah possibly following Colorado to the Big 12. Later that day, the 3 mountain schools did indeed announce they were joining the Big 12, all but ending the Pac 12 after over 100 years of history. On September 1, the Atlantic Coast Conference invited Stanford University and University of California to join, putting the nail in the Pac 12 coffin. Washington State and Oregon still have control over the Pac-12 Conference name and history, so the possibility remains of a resurrection for the conference. Rumors of talks with the Mountain West abounded.

Oregon State's baseball program went independent for 2025. Washington State's baseball program went to the Mountain West Conference for 2025-2026. In September 2024, the conference showed signs of life, bringing in Boise State University, Fresno State University, Colorado State University, and San Diego State University for the 2026-2027 school year bringing the conference back up to six schools, only four of which sponsor baseball. The conference still needed to add at least two schools. Later that month Utah State University and Gonzaga University were announced as members in 2026-2027, bringing the conference up to five baseball schools.

Source: Pac-10 Conference

2024 Schools[edit]

Additionally, the University of Colorado does not sponsor baseball.

Conference Baseball Champions[edit]

Year North Champion South/CIBA Champion Tournament Notes
1927 Washington State University Saint Mary's College of California --
1928 Oregon / Washington St. Saint Mary's College of California --
1929 University of Washington University of California --
1930 University of Washington University of Southern California --
1931 University of Washington Stanford University --
1932 University of Washington University of Southern California --
1933 Washington State University University of California --
1934 University of Oregon University of California --
1935 University of Oregon Cal / USC --
1936 Washington State University University of Southern California --
1937 University of Oregon University of California --
1938 Oregon St. / Washington St. University of California --
1939 University of Oregon USC / Saint Mary's --
1940 Oregon State University Saint Mary's College of California --
1941 University of Oregon Cal / Saint Mary's --
1942 University of Oregon University of Southern California --
1943 University of Oregon Cal / USC --
1944 Washington State University University of California, Los Angeles --
1945 Washington State University University of California --
1946 University of Oregon University of Southern California --
1947 Washington State University Cal / USC -- California won 1947 College World Series
1948 Washington State University University of Southern California University of Southern California USC won 1948 College World Series
1949 Washington State University University of Southern California University of Southern California
1950 Washington State University Stanford University --
1951 Oregon State University University of Southern California University of Southern California
1952 Oregon State University University of Southern California Oregon State University
1953 University of Oregon Stanford University --
1954 University of Oregon University of Southern California --
1955 University of Oregon University of Southern California University of Southern California
1956 Washington State University University of Southern California Washington State University
1957 University of Oregon Cal / USC -- California won 1957 College World Series
1958 Oregon State University University of Southern California University of Southern California USC won 1958 College World Series
1959 University of Washington University of Southern California University of Southern California
1960 Washington State University Cal / USC --
1961 Washington State University University of Southern California -- USC won 1961 College World Series
1962 Oregon State University Santa Clara University --
1963 Oregon State University University of Southern California -- USC won 1963 College World Series
1964 University of Oregon University of Southern California --
1965 Washington State University Stanford University --
1966 Washington State University University of Southern California --
1967 Stanford University no divisions --
1968 University of Southern California no divisions -- USC won 1968 College World Series
1969 University of California, Los Angeles no divisions --
1970 Washington State University University of Southern California University of Southern California USC won 1970 College World Series
1971 Washington State University University of Southern California University of Southern California USC won 1971 College World Series
1972 Wash. St. / Oregon University of Southern California University of Southern California USC won 1972 College World Series
1973 Washington State University University of Southern California University of Southern California USC won 1973 College World Series
1974 Oregon / Was. St. University of Southern California University of Southern California USC won 1974 College World Series
1975 Washington State University University of Southern California University of Southern California
1976 Washington State University University of California, Los Angeles --
1977 Washington State University University of Southern California University of Southern California
1978 Washington State University University of Southern California University of Southern California USC won 1978 College World Series
1979 Washington State University University of California, Los Angeles --
1980 Washington State University Arizona / Cal -- Arizona won 1980 College World Series
1981 University of Washington Arizona State University -- Arizona St. won 1981 College World Series
1982 Oregon St. / Portland St. Arizona State University --
1983 Oregon State University Stanford University --
1984 Wash. St. / Portland St. Arizona State University Washington State University*
1985 Washington State University Stanford University Oregon State University*
1986 Oregon State University University of California, Los Angeles Oregon State University* Arizona won 1986 College World Series
1987 Washington State University Stanford University Washington State University* Stanford won 1987 College World Series
1988 Washington State University Arizona State University Washington State University* Stanford won 1988 College World Series
1989 Washington State University University of Arizona University of Portland*
1990 Washington State University Stanford University Washington State University*
1991 Washington State University University of Southern California University of Portland*
1992 University of Washington University of Arizona --
1993 University of Washington Arizona State University --
1994 Oregon State University Stanford University --
1995 Washington State University University of Southern California University of Southern California
1996 University of Washington University of Southern California University of Southern California
1997 University of Washington Stanford University University of Washington
1998 University of Washington Stanford University University of Washington USC won 1998 College World Series

* The Pac-10 North held a tournament from 1984-1991. The Pac-10 South did not.

Year Regular Season Tournament Notes
1999 Stanford University --
2000 Ariz St. / Stanford / UCLA --
2001 University of Southern California --
2002 University of Southern California --
2003 Stanford University --
2004 Stanford University --
2005 Oregon State University --
2006 Oregon State University -- Oregon St. won 2006 College World Series
2007 Arizona State University -- Oregon St. won 2007 College World Series
2008 Arizona State University --
2009 Arizona State University --
2010 Arizona State University --
2011 University of California, Los Angeles --
2012 Arizona / UCLA -- Arizona won 2012 College World Series
2013 Oregon State University -- UCLA won 2013 College World Series
2014 Oregon State University --
2015 University of California, Los Angeles --
2016 University of Utah --
2017 Oregon State University --
2018 Stanford University -- Oregon St. won 2018 College World Series
2019 University of California, Los Angeles --
2020 Season cancelled in March
2021 University of Arizona --
2022 Stanford University Stanford University
2023 Stanford University University of Oregon
2024 University of Arizona University of Arizona
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