I just don't think you can replace what Carter and Williams did last year when you factor in their experience, the things RB's do when they aren't carrying the rock, and their production. I know you said you expected 30-40% less yards overall from the rushing game, but that in turn puts more pressure on your qb and o-line if someone snuffs out your running game. I think both of our teams are somewhat comprimised by that heading into this year. We collectively had three of the four best running backs in the league last year between us and all of them are drawing paychecks on Sundays now, and that kind of talent is hard to plug and play for teams not named Alabama or Clemson.