Remaining college football conference realignment questions - ESPN
And later on Friday night, Arizona, Arizona State and Utah announced they were officially jumping to the Big 12, joining Colorado in a Pac-12 exodus. It leaves a conference that was formed in 1915 with just four teams and on the verge of extinction.
The Big Ten Lands Oregon and Washington, Leaving the Pac-12 Bereft - The New York Times
The Big Ten booms to 18 schools with the move, powered by TV money, and the once-great Pac-12 dwindles to four after three more schools leave for the Big 12.