A cornerstone NFL player is designed to hold the franchise together. Just like the cornerstone of a building, a cornerstone player is the strongest and most important part of a franchise.
In order for a team to be successful in this league, they need to have the type of player they can count on at all times. While some teams have strong cornerstones, other franchises are lacking a true cornerstone on which to build.
Today we'll highlight every NFL team's cornerstone player and break down what makes each specific player a cornerstone.