The coveted white hat worn by the referee There are two referee openings for the 2019 season after Walt Coleman and Pete Morelli retired. So far, they are the only two referees we know who have retired. There are very few chances for the NFL to test officials for future referee openings.
The NFL is giving four of its officials the chance to audition to be future referees, or white hats. Since there are so few opportunities for the NFL to see how prospective referees would handle the new position, these preseason tryouts are very important. The NFL will assign the four officials to one