Strength of schedule is calculated from the opponents projected fantasy points allowed for the RB position. The best rating is +16 which gives the player the advantage against the defense and indicates an easy opponent, the worst rating is -16 which gives the defense the advantage and indicates a tough opponent.
As of the end of May, Smith was still unsigned. When given the opportunity over the last two years with the Lions Smith has performed admirably. We need to see where he lands before we move him up or down for 2013.