NBA replay review rules: Explaining when referees can check instant replay without a coach's challenge

Brendan OSullivan

NBA replay review rules: Explaining when referees can check instant replay without a coach's challenge image

The final two minutes of an NBA game can last a while.

Between timeouts and replay reviews, there can be too many stoppages down the stretch in some games.

The pressure intensifies and every play is under a microscope during and after the game. While players might say that a game isn't won or lost on a single play late in the fourth, it sometimes does alter the outcome. That's why referees are allowed to use instant replay for a closer look at some calls.

After all, the human eye can't catch everything in real-time.

The Sporting News breaks down the replay review rules below.

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When can NBA referees check instant replay?

(Per the NBA's official 2023-24 rulebook)

NBA referees have a handful of reasons to check the instant replay monitor even before the final two minutes of the fourth quarter and overtime. These rules also apply for the final two minutes.

  • Referees are uncertain whether a player made a shot prior to the game clock expiring at the end of any quarter or overtime period
  • A foul was issued at the end of any quarter or overtime period
  • Referees are uncertain whether a personal foul meets the criteria to be upgraded to a flagrant foul
  • A hostile altercation occurs
  • Referees are uncertain whether there should be time added to the game clock at the end of any quarter or overtime period
  • Referees are uncertain whether a made field goal was a 2-pointer or 3-pointer. This also applies on shooting fouls to award the player the correct amount of free throws
  • Referees are uncertain whether a player made the shot before the expiration of the shot clock
  • Referees are uncertain whether a personal foul meets the criteria of a clear-path-to-the-basket foul
  • Referees are uncertain whether a foul is on the floor or in the act of shooting
  • Referees are uncertain whether an off-ball foul occurred before the shot was released on a successful bucket
  • Referees are uncertain whether a team had the correct amount of players on the court

NBA officials have a separate set of rules that only apply during the final two minutes, in addition to the aforementioned rules.

  • Referees are uncertain which team should be awarded possession on an out-of-bounds call
  • Referees are uncertain whether the ball touched the rim, thus needing to check the shot or game clock for a potential adjustment
  • Referees are uncertain whether a player was standing in the restricted area when taking a block/charge
  • Referees are uncertain if a goaltending or offensive basket interference was called correctly on the floor

Brendan OSullivan

Brendan OSullivan Photo

Brendan O'Sullivan is an editorial intern for Sporting News, joining in 2024. He previously worked at Newsday on Long Island, New York after graduating from Quinnipiac University.