The following rules apply to all summer league games in 2018, except those played during the tournament portion of the NBA Summer League in Las Vegas:
The game consists of four 10-minute quarters in regulation.
Halftime lasts 8 minutes.
Both teams are allowed a 10-minute warm-up period prior to the start of each game.
A team reaches the penalty either on its 10th team foul or 2nd team foul in the last two minutes of each period.
A player fouls out once he commits his 10th personal foul.
The shot clock will be reset to 14 seconds (instead of 24) after (1) an offensive rebound of an unsuccessful field goal or free throw attempt which contacted the basket ring, (2) a loose ball foul is called on the defensive team in the sequence immediately following an unsuccessful field goal or free throw attempt which contacted the basket ring, or (3) the offensive team gains possession after the ball goes out of bounds in the sequence immediately following an unsuccessful field goal or free throw attempt which contacted the basket ring.
Each team is allowed one Coach’s Challenge during the final two minutes of the fourth period and overtime. If a team’s initial challenge is successful, it will retain its timeout and a maximum of one additional challenge. (More detailed rules and procedures applicable to the Coach’s Challenge are set forth below.)
Each team has two full timeouts per half.
A mandatory timeout will be taken at the first stoppage of play after the 5:59- and
2:59-mark of each period.
A timeout taken by a team will negate the next mandatory timeout due in that period (although a mandatory timeout will not count against a team’s timeout total if it occurs prior to either team calling its first timeout of the half).
Timeouts do not carry over to the second half.
All timeouts will last one minute and 45 seconds.
In overtime, the initial period lasts two minutes and, if necessary, the second overtime period is sudden death (i.e., the first team to score a point wins); each team is allowed one timeout in each overtime period (regardless of how many timeouts a team called in the second half or, if applicable, initial overtime period); and the free throw penalty begins on the 2nd team foul in each overtime period.
All other NBA rules apply.
The following rules apply only during the tournament games at the NBA Summer League in Las Vegas:
A player fouls out once he commits his 6th personal foul.
All overtime periods last two minutes.
INSTANT REPLAY & COACH’S CHALLENGE – RULES AND PROCEDURES
Each team’s head coach will have one challenge to trigger instant replay in specific situations during the final two minutes of the fourth period and at any point during overtime of all Summer League games.
Within these time constraints, a team’s head coach may challenge the following select NBA replay triggers:
Not reasonably certain whether a successful field goal was released or a called foul was committed prior to the expiration of the 24-second shot clock;
Not reasonably certain as to which team should be awarded possession after a ball goes out-of-bounds or whether an out-of-bounds in fact occurred;
Not reasonably certain whether a called common foul or called clear path foul met the criteria of a clear-path-to-the-basket foul;
Not reasonably certain as to which player should attempt free throws on a called foul;
Not reasonably certain as to whether the defender was inside or outside the restricted area (after the referees called a block or charge foul in the vicinity of the restricted area);
Not reasonably certain whether a goaltending or basket interference violation was called correctly;
Not reasonably certain whether an off-ball foul occurred prior to (i) an offensive player beginning his shooting motion on a successful field goal if the off-ball foul is committed by a defensive player, (ii) a defensive foul committed prior to the ball being released on a throw-in, or (iii) the ball being released on a successful field goal or a double-foul if the off-ball foul is committed by an offensive player; and
- Not reasonably certain whether a team had an improper number of players on the court while the ball is in play.
Referees will possess the sole and exclusive ability to initiate the following replay triggers at any point during the game:
Not reasonably certain whether a called foul met the criteria of a flagrant foul;
A field goal is made with no time remaining on the clock at the end of any period;
A foul is called with no time remaining on the clock at the end of any period; and
- A play concludes (i) with no time remaining on the clock (0:00) at the end of any period or (ii) at a point when the referees believe that actual time may have expired in any period; and the referees are reasonably certain that the game clock malfunctioned during the play.
Referees will possess the sole and exclusive ability to initiate the following replay triggers during the final two minutes of the fourth period and at any point during overtime:
Not reasonably certain whether a successful field goal was scored correctly as a 2-point or 3-point field goal, or in the case of a called shooting foul, whether the player was attempting a 2-point or 3-point field goal; and
Not reasonably certain whether the ball touched the rim and thus whether the shot clock should be adjusted.
If the first challenge is successful, the team gains a second challenge and retains its timeout. However, if the second challenge is successful, the team retains its timeout but no longer has a challenge.
An unused challenge carries over from the 4th period to overtime and from one overtime period to the next overtime period, but a team out of challenges at the end of regulation does not gain a new or additional challenge.
Procedures to Initiate a Challenge
To initiate a challenge, the head coach must call a legal timeout in a timely manner.
For a timeout to be considered “timely”, the challenging coach must call the timeout prior to live play resuming including, for example, prior to a referee handing the ball to the thrower-in, a referee handing the ball to a free throw shooter, or a referee tossing a jump ball. Once these windows of opportunity have closed, any subsequent timeout no longer will be considered timely for purposes of triggering a challenge; and, as a result, a team is no longer permitted to challenge a previous event.
Immediately after calling a timeout to initiate a challenge:
The coach shall press a button that will illuminate a blinking light positioned at the end of the scorer’s table closest to the challenging team’s bench; and
- After the referee approaches the head coach following the stoppage in play, the coach shall explain to the referee the specific event that he/she would like to challenge.
If a team calls a timeout to challenge an event that may not be challenged, it will retain its challenge but will be charged with the timeout.
If a team calls a timeout to challenge an event but does not have any timeouts remaining, it will be charged an excessive timeout, resulting in a technical foul, and no challenge review will take place.
Standard of Review
The Replay Center will help facilitate the review, but the on-court referees will make the final determination on all reviews.
For each reviewable matter (regardless of whether it is triggered by a head coach or referee), the current reviewable matters as set forth by NBA rules will apply.
To overturn the call on the floor via a challenge, the visual evidence available on replay must be clear and conclusive. If the video is inconclusive, the challenge will be deemed unsuccessful.
If the replay equipment is not functional or the challenged event is not captured on video, the call on the floor will stand and the challenging team will retain its challenge and timeout.
Prior to each team’s first summer league game, the crew chief will review these rules with each team’s head coach.