Conferences
| Years | Conference |
|---|---|
| 1901–1908 | Independent |
| 1908–1915 | Northwest Conference (NWC) |
| 1915–1959 | Pacific Coast Conference (PCC) |
| 1959–1964 | Independent |
| 1964–1968 | Athletic Association of Western Universities (AAWU) |
| 1968–1978 | Pacific-8 Conference |
| 1978–2011 | Pacific-10 Conference |
| 2011–present | Pacific-12 Conference |
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