NBA's New Coach's Challenge Rule Explained

Toronto Raptors v Brooklyn Nets
Toronto Raptors v Brooklyn Nets / Steven Ryan/Getty Images

Fans who were watching the Toronto Raptors kick off the season against the New Orleans Pelicans saw Raptors head coach Nick Nurse become the first to use the NBA's new coach's challenge in a game, when he unsuccessfully lobbied for an offensive foul on guard Norman Powell to be overturned.

What is the NBA Coach's Challenge?

Each team will get one challenge, and you must have a timeout remaining to use it. If the challenge is proven correct, the challenging team does not lose a timeout, while they will be docked one timeout if they are wrong.

The league experimented with this system in the G League, but the NBA rules do not allow you to challenge shooting fouls like in the G League. The only calls that can be challenged are personal fouls, a called out-of-bounds violation, goaltending, or basket interference.

Proponents of this system are thrilled that refs can be held accountable, but those against it note how it can slow down the game.

The idea of allowing coaches the power to challenge calls is a nice concept, but Nurse has shown that things could get messy due to the number of subjective calls in the NBA.