|ESPN.com: Pac-12||[Print without images]|
|Marcus Mariota could earn a huge boost in his Heisman Trophy candidacy on Sept. 6.|
Mariota, in particular, has something to prove after racing out as the Heisman front-runner but then fading with a knee injury that limited his ability to run and react.
The Ducks have been on the cusp of national title contention the past two seasons, only to be stunted by losses to Stanford. That game in 2013 was the first evidence of a limited Mariota, who had negative rushing yards that week and the one after.