What can the past tell us about the future of the PAC-12? Pour one out for the PAC-12. Or... the PAC-4. Who knows, by the end of the day it may be the PAC-2. The prestigious west coast college athletics conference imploded last week as two pacific northwest schools jumped ship for bigger rivals and even bigger paychecks. Washington and Oregon will join the Big Ten starting in 2024. But while realignment of this scale is seismic, it isn't unprecedented.