NFL overtime rules 2022: Explaining how the OT format works in football for regular season, playoffs
Tony Corrente, the longest-tenured active NFL referee, is one of 8 retiring officials – Football Zebras
Officiating crews for the 2021 season – Football Zebras
NFL Health and Safety Fact Sheet
The Rule Changes We'd Make to Improve the NFL - The Ringer
San Diego Stadium farewell: 'Holy Roller' ranks as most memorable Chargers home game - The San Diego Union-Tribune
NFL playoff officiating decisions - What happened on controversial calls -- right and wrong -- and what came next - ESPN
NFL Referee Assignments Week 2: Refs Assigned for Each NFL Game This Week
NFL Instant Replay Process
NFL Taking Steps to Improving Fan Experience with Under-the-Hood Referee Replays, News, Scores, Highlights, Stats, and Rumors
The NFL's 3 changes under the hood of replay that could have mixed results – Football Zebras
Super Bowl LIV: How NFL Measures First Downs Is Primitively Low-Tech
Week 2 referee assignments – Football Zebras
NFL Owners Approve Replay Rule Changes, Among Others for 2021 Season