What Is Perimeter FP/Route Allowed?
Perimeter FP/Route allowed is the half-PPR fantasy points surrendered by a defender divided by the perimeter routes he covered. Together with the slot board it tells you which kind of receiver a defender is actually vulnerable to -- a corner can be excellent on the boundary and still be the wrong man to leave inside. Scoring is 0.5 points per reception, 0.1 per receiving yard, and 6 per touchdown.

