Technology is no excuse to play fast and loose with the refs
History of Instant Replay
History of Instant Replay
NFL's instant replay officials have new powers, but owners weren't interested in other major rules changes - The Boston Globe
Pac-12 officiating: Former players, media analysts sound off after blown calls in Oregon State upset
Instant Replay Archives – Muddy River News
NFL adopts rule changes for 2019 season
The science of building good NFL crews – Football Zebras
ER on the field: An inside look at how NFL medical teams prepare for a game day emergency
Replay Assistance Rule NFL Football Operations
The view from the booth: A night with the GS football stat crew - Georgia Southern University Athletics