When the Arizona Cardinals signed free agent guard Evan Mathis, they set out to accomplish two things. One is the obvious one -- upgrade the play at right guard, which has needed upgrading for a few years. Between Paul Fanaika, Jonathan Cooper and Ted Larsen, most would say the play has been bearable at best.
Mathis is a two-time Pro Bowler and was also an All-Pro in 2013. He grades out very highly in run blocking.
But the on-field performance is not the only thing. The Cardinals also signed him to help with the development of 2015 first round pick D.