Strength of Schedule is calculated from the opponents projected fantasy points allowed for the TE position. The easiest rating is 1 which gives the player the advantage against the defense and indicates an easy opponent, the most difficult rating is 10 which gives the defense the advantage and indicates a tough opponent.
Carlson has decided to retire at the age of 30. He had suffered multiple concussions during his seven year career and his retirement leaves a huge void at tight end for Arizona. Fortunately the position was not a vital part of the offense last season.