how many challenges does a coach get in the nfl
Replay review in gridiron football The National Football League first adopted a limited Instant Replay system in 1986,[1] though the current system began in 1999, bringing in the opportunity to "challenge" on-field calls of plays. The current system mirrors a system used by the now defunct USFL in 1985. Each coach is allowed two opportunities per game to make a coach's challenge. Before the 2004 NFL season, the instant replay rule was slightly changed to allow a third challenge if both of the original two challenges were successful.