NFL Owners Approve Replay Rule Changes, Among Others for 2021 Season
NFL rule changes include players now being able to wear No. 0, and tripping penalties being personal fouls - Dawgs By Nature
The NFL has an instant replay camera problem
NFL rule changes: Kickoffs, instant replay, fourth-down reviews among adjustments for 2023
Instant Replay: Fair or Foul? – The Fourth Estate
A closer look at the rule changes the NFL is debating - The Washington Post
2021 NFL rule changes guide - What to expect from more replay help, jersey number flexibility, more - ESPN
It's time for the NFL to rethink how it uses replay - Gang Green Nation
NFL owners approve replay change, other new rules for 2021 season - ESPN
New NFL rules for 2023: league adopts changes to replay, fourth-downs
2023 NFL rule changes explained