Nick Marshall for Heisman.That’s not a campaign; that’s a guarantee.Auburn backup quarterback said be believes Marshall, who led the Tigers to the BCS National Championship Game last year, has college Yao Ming Jersey football’s most prestigious award on lockdown.”He led us to the national championship, and we were 13 seconds away,” Johnson said, . “And this year he got better at pa sing, better at running, better at making reads. He’s become a leader on this team and I Jerian Grant Jersey ‘ve never seen him so amped at practice every day the way he is, the way he comes out. So, I know for a fact he’ll win the Heisman.”Marshall is certainly considered a legitimate candidate, and rightfully so. He enters his senior season, along with Braxton Miller of Ohio State, as one of the nation’s most dynamic dual-threat Chris Clemons Jersey quarterbacks. The SEC, and in particular, the new SEC Network, will provide him with an incredible level of national exposure.But there are also a handful of roadblocks that make him anything but a certainty. One is Auburn coach Gus Malzahn’s commitment to the running game. Although Marshall’s rushing exploits will certainly help his Heisman case, his pa sing numbers aren’t likely to even approach those of candidates like Oregon’s Marcus Mariota or Baylor’s Bryce Petty. As such, Marshall will need to rack up a another DeMarre Carroll Jersey big season in the win column to keep his Heisman hopes afloat; perhaps even stay in contention for a berth in the national title Robert Covington Jersey game. That won’t be easy, given Auburn’s question marks on defense and a schedule that includes five ranked opponents over AU’s last six games.Johnson’s claim is a bold one. But then again, Johnson’s not the one who will have to deliver.*Follow Chase Goodbread on Twitter *