08:07 AM ET 12.10 | Perhaps history will only strike once for Johnny Manziel. Enjoy your Heisman, Johnny Football, because it probably won't get much better than this. You've won the prestigious trophy earlier in your college career than anyone who has ever played the game. Beware of what lies ahead. It's no coincidence that there has only been one two-time Heisman winner. ... As new and exciting as Johnny Football is now, he'll be old hat by next fall. Meanwhile, the games must be played and the pressure will be on the 2013 edition of Manziel. The target on his back will be bigger than ever in the SEC. Defensive coordinators will be concocting exotic game plans to stop the defending Heisman winner.