The NBA approves the use of the challenge of the coach in 19-20

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Teams may use a challenge per match, whether successful or not, and may be used to interrogate a variety of instances, including a personal foul on the coach's own team, an offside call, a goalkeeper or interference from the basket. The challenge can be used at any time of the match. However, during the last two minutes of the fourth quarter or overtime, out-of-bounds, goalkeeping or basket interferences will automatically be triggered for review and can not be adjusted. .

To challenge a game, a team must have a break and call one after the game, then his coach must turn his finger towards the referees to signal the challenge. If a team does not have a timeout and tries to challenge a game, a technical foul will be imposed and no challenge will occur. There must be clear and conclusive visual evidence to reverse an appeal.

Meanwhile, the league's retransmission center in Secaucus, New Jersey, is now able to instantly request the revision of two types of pieces: if a shot is at 2 or 3 pointers (both for the baskets) be done to determine which one it is, as well as when a player is fouled during the shot, to determine whether he gets two or three free throws) and for a potential timing violation.

The league will now have a "Field Administrator", a new position recruited and overseen by the NBA league office, placed at the scorers table to speed up communication between the broadcast center and the referees in the field.