Behind the scenes at the NFL's new replay review center in New York - Sports Illustrated
NFL replay rules could reportedly change dramatically in 2021
The NFL's 6 new rules for the 2021 season, explained
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NFL owners pass seven rule changes but the league is divided over the expansion of replay to all plays
NFL's instant replay officials have new powers, but owners weren't interested in other major rules changes - The Boston Globe
NFL's instant replay officials have new powers, but owners weren't interested in other major rules changes - The Boston Globe
2021 N.F.L. Rule Changes: A Viewer's Guide - The New York Times
New replay rule makes for a smoother game – Football Zebras
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