ESPN analyst Kirk Herbstreit has called the 2015 season the year of the question mark at the quarterback position. Thirteen of the AP Top 25 programs are projected to start a new QB this season, including six of the top 10. As many as six top-25 teams will start a quarterback who transferred into the program.

How important is experience at the position? After all, five of the past six national championship teams were led by first-year starting quarterbacks, and Texas A&M's Johnny Manziel and Florida State's Jameis Winston each won a Heisman Trophy as redshirt freshman quarterbacks.

Amid this uncertainty, Pac-12 reporter Kevin Gemmell and Pac-12 recruiting analyst Erik McKinney set out to evaluate the strength of each Pac-12 program at the quarterback position set out over a three-year period (2015-17), taking into account current depth charts and developments on the recruiting trail in the 2016 and 2017 classes.

Below is Stanford's evaluation. For the full rankings, click here.