Upon further review – Instant replay works
Upon further review: Alabama experimenting with instant replay in high school football
The History of Instant Replay in the NFL, News, Scores, Highlights, Stats, and Rumors
NFL Instant Replay Process
Upon further review, replay finally has arrived – The Durango Herald
On Further Review, the NFL's Instant Replay is Finally Instant
Tech: A closer look at the NFL's instant replay camera work
NFL replay rules could reportedly change dramatically in 2021
NFL officials to use tablets for replay review in preseason games
On Further Review, the NFL's Instant Replay is Finally Instant
Upon Further Review: Instant Replay Should be Banned from Sports, by Connor Groel, Top Level Sports