Last year, I looked at the worst passing seasons in NFL history as measured by the amount of Adjusted Net Yards each passer produced relative to league average. The worst season of all time — which is heavily influenced by the number of pass attempts a quarterback has — belonged to Blake Bortles in 2014.
Well, in 2018, a rookie Josh Rosen nearly beat him. Rosen averaged just 3.53 ANY/A last year, relative to a leauge average ANY/A of 6.32. That’s 2.79 ANY/A below average, and over 438 dropbacks, that means Rosen produced 1,221 Adjusted Net Yards fewer than league average. He was worse relative to league average than Bortles was in 2014, but since he had fewer attempts, he now comes in with the second least valuable season.
The full list of the 100 worst passing seasons (without pro-rating for games played) is below.
