NBC rules analyst said officials made mistakes on two Chiefs penalties Sunday night
What is the XFL? Explaining the teams, players to watch, rules and more – NBC Sports Chicago
Steelers safety Minkah Fitzpatrick says the hit that injured Browns RB Nick Chubb wasn't dirty
College football targeting, explained: How controversial rule works, from penalty yardage to ejections
NFL announces closer officiating ties with select college conferences – Football Zebras
Alan Pergament: Cris Collinsworth terrific as analyst, but as referee makes fans want to shout
NFL rule changes you should know as the 2023 season kicks off - ESPN
History of Instant Replay
How much money do referees make during NFL playoffs? – NBC Sports Boston
Impact of Television NFL Football Operations
Some NFL officials are calling their final regular season game – Football Zebras