Griffin is such a major unknown at this point. He had immense talent until Mike Shanahan went brain dead and played him when he was already crippled only to see his knee totally wipe out. Then the following season the genius kept him out of all exhibition games and started him in game 1. Guess who got injured again shortly thereafter? Griffin doesn't run the way he used to, which made him so dangerous. Since he never was a pocket passer, and may have to do a good bit of running because of Cleveland's problematic front, I wouldn't bet on a big comeback. Plus, he didn't even play last season, and not that much the season before.