NFL replay rules could reportedly change dramatically in 2021
NFL has a new name for the head linesman position: down judge – Football Zebras
When a runner's helmet comes off, he's down - NBC Sports
Analyzing how the NFL can improve replay review, Pro Football Talk
Behind the scenes at the NFL's new replay review center in New York - Sports Illustrated
Who are Super Bowl 2022 officials for Rams vs Bengals?
Fox's Pereira knows pressure Super Bowl officials are facing
Kickin' It with Kiz: Why our instant-replay obsession has made NFL games less fun to watch
Perry: Reducing commercials in NFL 'would be fascinating' – NBC Sports Boston
NFL reveals referee for 2022 Super Bowl that will feature Rams or 49ers against Bengals or Chiefs
Here's a guide to targeting in college football and the NFL – NBC Sports Chicago
The 5 O'Clock Club: How instant replay is killing the NFL - Hogs Haven
XFL 2023: Rules, player salaries and everything you need to know - ESPN