#28. St. Louis Rams: Nick Foles & Todd Gurley
Given how strong Gurley’s rookie season was, the Rams‘ spot on this list speaks to how badly Foles struggled in 2015. PFF graded him as the worst quarterback in the league among those who played at least 25 percent of his team’s snaps. He suffered career lows in completion percentage (56.4) and yards per pass attempt (6.09), with seven touchdowns and 10 interceptions.
Gurley, meanwhile, quickly blossomed into one of the best-running backs in the league. He finished with 1,106 rushing yards — good for third-most in the NFL — despite playing in just 13 games. His rookie season was one for the ages, and he should continue to terrorize opposing defenses for years to come.