See PFF's "About" page for more information on their grading system.
Offense
Best: Andrew Whitworth (+3.8; +3.3 pass block)
Other good grades: Andre Smith (+3.3), Andy Dalton (+2.6), Marvin Jones (+1.8), Brandon Tate (+1.0)
Worst: Kyle Cook (-5.3; -5.2 run block)
Other bad grades: Kevin Zeitler (-5.2; -4.4 run block), BenJarvus Green-Ellis (-1.6), Dennis Roland (-1.0 in 3 snaps)
Defense
Best: Geno Atkins (+9.6; +5.2 pass rush)
Other good grades: Carlos Dunlap (+4.8), Michael Johnson (+3.6; +2.9 run defense), Leon Hall (+2.4), Reggie Nelson (+2.3), Pat Sims (+1.0; +1.2 run defense), Vontaze Burfict (+0.9)
Worst: Rey Maualuga (-2.2)
Other bad grades: Domata Peko (-1.6)
Other performances of note:
-Good 'ol Geno put up his second highest grade of the season playing only 66% of defensive snaps (43 of 65 total), which was his season low. So far this year he has averaged 75% of defensive snaps. PFF credited Geno with 4 sacks, 2 hurries, and 4 stops.
-The offensive line was manhandled by Ziggy Hood, Casey Hampton, and Lawrence Timmons. Only Whitworth (+0.1) and Orson Charles (+0.5) got positive run block grades, and the team cumulatively graded -15.4 in run blocking.
-In 9 snaps, John Conner graded +0.1.
-Marvin Jones' grade was his highest by far this season (previous high = +0.4)
-Back to celebrating- happy holidays, all!