The Pac-12 college football conference has lost nearly all its teams now that schools like USC and Colorado have announced they’re leaving for rival leagues. The Athletic’s Chris Vannini explains why fans are beleaguered.

This episode was produced by Hady Mawajdeh and Siona Peterous, edited by Matt Collette, fact-checked by Laura Bullard and Amanda Lewellyn, engineered by David Herman, and hosted by Sean Rameswaram.

Transcript at vox.com/todayexplained

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