Upon Further Review: A Brief History of Instant Replay
NFL replay reviews, challenges drop with new rules and tech - ESPN
NFL Approves Expanded Authority for Replay Officials Ahead of 2021 Season, News, Scores, Highlights, Stats, and Rumors
NFL to consider expanding replay reviews
N.F.L. Will Experiment With Replay Reviews of Pass Interference - The New York Times
New replay rule makes for a smoother game – Football Zebras
History of Instant Replay
MLB replay review still makes too many mistakes, as the Oakland A's Matt Olson learned again - Athletics Nation
Turnover on downs automatically reviewed for 2023 NFL season
XFL ANNOUNCES KEY RULE CHANGES FOR 2023 NEW POSSESSION OPTION AND CENTRALIZED REPLAY AMONG CHANGES - OnFocus
NFL Replay: Why Does It Even Exist?, News, Scores, Highlights, Stats, and Rumors