NFL creates new officiating post: VP of replay and administration – Football Zebras
Five on-field, two replay officials opt out of 2020 season
NFL officials have been off their game this season - The Boston Globe
NFL rule changes: Modified instant replay, more positions allowed to wear single-digit jerseys - The Washington Post
NFL Football Operations NFL Football Operations
NFL Referees Use Replay To Rescind Penalty Against Packers On Monday Night Football, Which No One Knew They Could Do : r/nfl
Replay review in gridiron football - Wikipedia
John Parry on calling Super Bowl 53, pass interference replay, more - Sports Illustrated
Upon further review, NFL officiating is in 'decline'
Replay Assistance Rule NFL Football Operations
Two Pompano Beach referees achieve their NFL dream