Post-signing day Pac-12 power rankings

With signing day in the books, here's an updated look at how the Pac-12 power rankings will look in 2017:

1. USC: USC already sat atop these rankings the last time we did them and proceeded to bring in the Pac-12's top-ranked class. There is early-impact talent, but it will be tough for any true freshmen to earn early playing time.

2. Washington: The Huskies remain the favorite in the Pac-12 North after signing the nation's No. 23-ranked class.

3. Stanford: This class was rare for Stanford in that it brought in several players who could help right away. Both offensive tackles, Foster Sarell and Walker Little, figure to be contributors this season as the team looks to re-establish a dominant…