Amna Nawaz:

The 2023 college football season is officially under way, with some big changes looming.

On Saturday, Heisman Trophy hopeful Caleb Williams threw four touchdowns, as his USC Trojans trounced San Jose State. But that win kicked off the last season for USC in the Pac-12 Conference. Starting next year, USC, UCLA, Oregon, and Washington will move to the Big Ten Conference, while Arizona, Arizona State, Colorado, and Utah will go to the Big 12, leaving just four schools in the Pac-12.

For more on what these moves mean and what prompted them, I'm joined now by Pat Forde, a senior writer for "Sports Illustrated."

Pat, good to see you. Thanks for joining us.

Pat Forde, "Sports Illustrated": Thank you. Good to be with you.

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