These rankings factor in several major attributes for the quarterback position.
Personal observation and opinion play a key role. A general section for film-review grades forms a foundation, but these quarterbacks’ most recent performances are what really sends them flying up and down the rankings every four weeks.
Wins also give signal-callers a slight boost in addition to their individual performances. The statistics used to help determine the ranking system are pulled from ESPN.com, NFL.com and Pro Football Focus (subscription required), unless stated otherwise.
Stats that are factored in include passer rating, completion percentage, yards per pass, rushing yards per game, touchdown-to-interception ratio, fumbles lost and wins.
As the season moves on, the weighted influence from last year’s output is reduced every four weeks.
When more than one quarterback plays for a team in one game, the QB with the most passing attempts was featured.
Also, Pro Football Focus grades every single play of the season to generate a cumulative point total, which weighs into the metric used to create these rankings.