Many changes are coming for the Dallas Cowboys and changing of the guards, quite literally, is now one of them. Zack Martin, a future Hall of Famer, has informed the team of his retirement from the NFL. This news isn't all that surprising considering he's reached the age where father time starts to catch up to professional athletes, and is also currently rehabbing from a season-ending ankle injury that required surgery.
Now that we know Zack Martin won't return to Dallas, it leaves a vacancy that will need to be filled on the Cowboys offensive line at right guard.