Interactive graphic: Pro Football Focus rates McCown's magic, Peanut's absence

HOW IT WORKS:

Pro Football Focus, which nearly a third of the NFL subscribes to, has a complex grading process, looking at every player on every offensive, defensive and special-teams play. Plus or minus grades are given and are based around an average of 0, with each position graded slightly differently. If a player does something you normally would expect, then a score of 0 is given. Grades are given for plays that are reasonably considered to be better or worse than the average or expected play. For the final grade, player participation is factored in, using a normalization factor to set the average player in that facet of the game to 0.

Bears backup quarterback Josh McCown continues to lead the Bears to wins and continues to do well in PFF’s reviews. McCown had an NFL passer rating of 92.9 against the Ravens and a solid 2.5 mark in PFF’s ratings. He was able to beat the elements – the wind, the rain, the mud and more — at Soldier Field by completing short, safe throws. Here’s a breakdown of his passes:[iframe src=”//e.infogr.am/-chadmerda_1384807069″ width=”300″ height=”585″ scrolling=”no” frameborder=”0″]

Bears cornerback Tim Jennings will be leaned on with Charles Tillman on injured reserve with torn triceps and he came through with a strong performance against the Ravens. Here’s a look at how Jennings finished with a 1.9 overall rating – his best of the season — on Sunday:[iframe src=”//e.infogr.am/tillman-123709937″ width=”300″ height=”581″ scrolling=”no” frameborder=”0″]

Compiled with Adam Jahns