(AP) – The NFL finally will have an on-field official in the Pro Football Hall of Fame.

Former referee Art McNally will be inducted into the Hall after a decades-long career starting as an on-field official and continuing as the head of officiating for the league.

McNally was instrumental in modernizing and standardizing officiating. His use of film to teach and evaluate and a grading system is still mostly in use today and is credited for helping improve the way games have been called over the years.