Timeline: Charting the course of change in rules, presentation
Third Down Virus epidemic infecting football's watchability
Centralized instant replay among NFL rule changes adopted by owners - Newsday
CBS News poll: Football fans divided on use of instant replay, kneeling controversy - CBS News
Denver Broncos linebacker sues NFL, LA Chargers over season-ending injury
NFL owners vote to expand rules surrounding instant replay
Press Releases - ESPN Press Room U.S.
The NFL has an instant replay camera problem
The NFL has an instant replay camera problem
This is what MLB's new instant replay room looks like : r/baseball
The 5 O'Clock Club: How instant replay is killing the NFL - Hogs Haven
Instant replay on table for NFL owners - The Boston Globe
NFL will consider instant replay changes, but 'sky judge' remains unlikely - The Washington Post