What happened: PFF's positional grading rankings for its grading era list Trent Williams' 2021 season as the highest-graded performance among offensive tackles. The list

Why it matters: The distinction adds to Williams' résumé as one of the position's most decorated graders, reinforcing his standing among the league's top offensive tackles.

What to watch: PFF's series is expected to continue rolling out its highest-graded-season honorees at other positions.