Strength of schedule is calculated from the opponents projected fantasy points allowed for the PK 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.
Blair Walsh had his worst season of his short career in 2014 as he missed 9 field goals. He has the ability to make long distance kicks so he could find himself back in the top 10 of NFL kickers. He does not play in the comfort of the Metrodome anymore, which probably hurts his stock a bit.