The fantasy football world has lagged behind when it comes to effectively measuring the impact blocking has on fantasy production, so last year I devised a grading system that uses multiple advanced metrics to project how blocking matchups will impact fantasy football performance in the upcoming week's contests. The details of the system can be found here.
The entire list of the Week 13 overall matchup grades are posted below, along with a detailed look at how those blocking grades could impact certain start-sit decisions this week.
(Note: Unless otherwise stated, the metrics and rankings listed below are for Weeks 8-12).