Worst player on each NFL team 2015

#31. Arizona Cardinals: Jonathan Cooper

PFF grade (position rank): -6.7 (50th)
2015 salary cap hit: $4.0 million

Cooper, a top-10 pick out of North Carolina in the 2013 NFL Draft, received his first dose of extended playing time this season. It did not go well.

Cardinals fans saw why it took so long for the former top prospect to earn a starting job. Cooper allowed 19 QB hurries in nine games at right guard before injuring his knee. Even after he recovered, coach Bruce Arians elected to keep him on the bench in favor of veteran Ted Larsen.