Strength of schedule is calculated from the opponents projected fantasy points allowed for the WR 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.
Walter is on the downside of a very mediocre career and will be 32 years old by the time the season starts. The drafting of Justin Hunter makes Walter nothing more than the No. 4 wide receiver and quarterback Jake Locker is going to have trouble making two wide receivers fantasy relevant.