The replay timing rule change that's not in the rulebook – Football Zebras
Rules school: What replay assist can and can't do – Football Zebras
NFL Officiating Crews for the 2022 NFL Season
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
Week 7 officiating video: legal blocks, instant replay, 10 second run-offs, and illegal celebrations – Football Zebras
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
Behind the scenes at the NFL's new replay review center in New York - Sports Illustrated
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
History of Instant Replay
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
Can New Technology Help Improve NFL Officiating?
Centralized replay flunks its first test – Football Zebras