NFL Owners Approve Replay Rule Changes, Among Others for 2021 Season
The Rule Changes We'd Make to Improve the NFL - The Ringer
NFL Replay Rules Remain Problem For Officials
NFL's instant replay officials have new powers, but owners weren't
NFL replay reviews, challenges drop with new rules and tech - ESPN
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How the new NFL replay rules could have a boomerang effect on the
Replay review in gridiron football - Wikipedia
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