Pro Football Focus has a brief analysis about Peyton Manning and what their analysts believed was a decline in his play prior to the Week 15 game against San Diego when he injured his thigh.
According to our grades, it started well before Week 15. After a solid start to the season, Manning entered his Week 9 contest against the New England Patriots with a league-high passer rating of 119.1, though he “only” ranked sixth in our PFF passing grades. He was already forcing too many passes into coverage, but was getting away with them (keeping his stats clean) while receiving quite a bit of help from his playmakers. Week 9 marked the beginning of a three-week stretch of negative grades for Manning, including one of his worst performances in years against the St. Louis Rams in Week 11.
Continue reading PFF: What Should We Expect From Peyton in 2015?