At this point of the college football season, with some crucial games still on tap for this weekend, the frontrunners in the Heisman race are A&M's sensational freshman QB Johnny Manziel and game-changer Manti Te'o of Notre Dame. Still in the hunt was once heavily-favored Colin Klein of Kansas State. Vanishing completely after an impressive start is West Virginia's Geno Smith. I'd personally like to see Johnny Manziel win the trophy this year and the odds are evidently in his favor. But, to play the part of a contrarian, here's what could derail the hopes of those backing him for...