After a bad week, the NFL's concussion protocol comes under scrutiny once again – The Denver Post
NFL100: Why did officials use a pistol to signal the end of the quarter? – Football Zebras
Upon further review, NFL's replay system could remain intact - The Boston Globe
NFL: Owners mull cut of regular-season overtime to 10 minutes
NFL fixed grades for desired Super Bowl ref – Football Zebras
Super Bowl XXIII - Wikipedia
Patrick Mahomes to star in Netflix docu-series 'Quarterback'
History of Instant Replay
2023 Super Bowl: Patrick Mahomes and Chiefs rally to beat Eagles - Los Angeles Times
The Dolphins and the 49ers are off to record-threatening offensive starts – WATE 6 On Your Side
History of Instant Replay