For four years, the Colts have struggled to protect their most important asset: Andrew Luck. Those failing culminated in an injury plagued season for Luck in 2015. The offensive line has been an issue since GM Ryan Grigson took over in 2012 and his repeated attempts to fix it have all failed.
Pro Football Focus has graded all of the offensive lines in the NFL, and the Colts weren’t nearly as bad as many might guess. They were right in the middle of the pack with the 15th best line in the NFL.