The NBA will implement a coach’s challenge during Summer League play in July and anticipates introducing the rule for the 2019/20 regular season, according to a league memo obtained by
ESPN’s Zach Lowe.
Here’s how the new rule is expected to work, according to Lowe:
- Coaches will get one challenge per game, whether or not it’s successful.
- Called fouls, goaltending, basket interference, and out-of-bounds plays are the only calls that can be challenged. Uncalled fouls can’t be challenged.
- Coaches must have a timeout available to use a challenge, and must use that timeout immediately after the call they want to challenge.
- If the challenge is successful, the team will get its timeout back. If not, it will be lost.
- The crew chief for that game’s referee crew will make the final call on challenges involving fouls. All other challenges will be decided by the NBA’s Replay Center.