When was instant replay first used in the NFL?
Instant replay was first used in the NFL starting in the 1986 season. All replays were initiated by NFL replay officials and coaches were not allowed to ‘challenge’. This system lasted until 1992 when the NFL owners voted to discontinue the use of instant replay. Replay returned to the NFL in 1999 and coaches were allowed to challenge a maximum of two plays per game. For the 2004 season, the replay rule was amended to allow a coach a third challenge if the first two challenges were successful.