<P> The National Football League first adopted a limited Instant Replay system in 1986 , 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 . </P>
<P> The National Football League first adopted a limited Instant Replay system in 1986 , 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 . </P>
how many challenges does a coach get in the nfl
how many challenges does a coach get in the nfl
two opportunities per game a third challenge if both of the original two challenges were successful .
two opportunities per game a third challenge if both of the original two challenges were successful .