Section I-Scoring
a. A legal field goal or free throw attempt shall be scored when a live ball from the playing area enters the basket from above and remains in or passes through the net.
b. A successful field goal attempt from the area on or inside the three-point field goal line shall count two points.
c. A successful field goal attempt from the area outside the three-point field goal line shall count three points.
(1) The shooter must have at least one foot on the floor outside the three-point field goal line prior to the attempt.
(2) The shooter may not be touching the floor on or inside the three-point field goal line.
(3) The shooter may contact the three-point field goal line, or land in the two-point field goal area, after the ball is released.
d. A field goal accidentally scored in an opponent's basket shall be added to the opponent's score, credited to the opposing player nearest the shooter and mentioned in a footnote.
e. It is a violation for a player to attempt a field goal at an opponent's basket. The opposing team will be awarded the bal at the free throw line extended.
f. A successful free throw attempt shall count one point.
g. An unsuccessful free throw attempt which is tapped into the basket shall count two points and shall be credited to the player who tapped the ball in.
h. If there is a discrepancy in the score and it cannot be resolved, the running score shall be official.
Section II-Timing
a. All periods of regulation play in the NBA will be twelve minutes.
b. All overtime periods of play will be five minutes.
c. Fifteen minutes will be permitted between halves of all games.
d. 130 seconds will be permitted between the first and second periods, the third and fourth periods and before any overtime period.
e. A team is permitted 30 seconds to replace a disqualified player.
f. The game is considered to be in the two-minute part when the game clock shows 2:00 or less time remaining in the period.
g. The public address operator is required to announce that there are two minutes remaining in each period.
h. The game clock shall be equipped to show tenths-of-a-second during the last minute of each period.
Section III-End of Period
a. Each period ends when time expires.
EXCEPTIONS:
(1) If a live ball is in flight, the period ends when the goal is made, missed or touched by an offensive player.
(2) If the official's whistle sounds prior to the horn or :00.0 on the clock, the period is not over and time must be added to the clock.
(3) If the ball is in the air when the horn sounds ending a period, and it subsequently is touched by: (a) a defensive player, the goal, if successful, shall count; or (b) an offensive player, the period has ended.
(4) If a timeout request is made at approximately the instant time expires for a period, the period ends and the timeout shall not be granted.
b. If the ball is dead and the game clock shows :00.0, the period has ended even though the horn may not have sounded.
Section IV-Tie Score-Overtime
If the score is tied at the end of the fourth period, play shall resume in 130 seconds without change of baskets for any of the overtime periods required. (See Rule 5-Section II-d for the amount of time between overtime periods.)
Section V-Stoppage of Timing Devices
a. The timing devices shall be stopped whenever the official's whistle sounds indicating one of the following:
(1) A personal or technical foul.
(2) A jump ball.
(3) A floor violation.
(4) An unusual delay.
(5) A suspension-of-play for any other emergency (no substitutions are permitted.)
(6) A regular or 20-second timeout.
b. The timing devices shall be stopped:
(1) During the last minute of the first, second and third periods following a successful field goal attempt.
(2)During the last two minutes of regulation play and/or overtime(s) following a successful field goal attempt.
c. Officials may not use official time to permit a player to change or repair equipment.
Section VI-20-Second Timeout
A player's request for a 20-second timeout shall be granted only when the ball is dead or in control of the team making the request. A request at any other time shall be ignored.
EXCEPTION: The head coach may request a 20-second timeout if there is a suspension of play to administer Comments on the Rules-N-Guidelines for Infection Control.
a. Each team is entitled to one (1) 20-second timeout per half for a total of two (2) per game, including overtimes.
b. During a 20-second timeout a team may only substitute for one player. If the team calling the 20-second timeout replaces a player, the opposing team may also replace one player.
EXCEPTION: In the last two minutes of the fourth period and/or any overtime period, free substitution is permitted by both teams.
c. If a second 20-second timeout is requested during a half (including over-times), it shall be granted. It will automatically become a charged regular timeout. Overtimes are considered to be an extension of the second half.
d. The official shall instruct the timer to record the 20 seconds and to inform him when the time has expired. An additional regular timeout will be charged if play is unable to resume at the expiration of that 20-second time limit.
EXCEPTION: No regular timeout remaining and an injured player on the court.
e. This rule may be used for any reason, including a request for a rule interpretation. If the correction is sustained, no timeout shall be charged.
f. Players should say "20-second timeout" when requesting this time.
g. If a 20-second timeout is requested by the offensive team during the last two minutes of the fourth period and/or any overtime period and (1) the ball is out-of-bounds in the backcourt (except for a suspension of play), or (2) after securing the ball from a rebound and prior to any advance of the ball, or (3) after the offensive team secures the ball from a change of possession and prior to any advance of the ball, the timeout should be granted. Upon resumption of play, the team granted the timeout shall have the option of putting the ball into play at the 28' hash mark in the frontcourt or at the designated spot out-of-bounds. If the ball is put into play at the hash mark, the ball may be passed into either the frontcourt or backcourt. If it is passed into the backcourt, the team will receive a new 8-second count.
h. If a 20-second timeout has been granted and a mandatory timeout by the same team is due, only the mandatory timeout will be charged.
i. A 20-second timeout shall not be granted to the defensive team during an official's suspension-of-play for (1) delay-of-game warning, (2) retrieving an errant ball, (3) an inadvertent whistle or (4) any other unusual circumstance.
EXCEPTION: Suspension of play for a player bleeding. See Comments on the Rules-N.
Section VII-Regular Timeout-100/60 Seconds A player's request for a timeout shall be granted only when the ball is dead or in control of the team making the request. A request at any other time shall be ignored.
EXCEPTION: The head coach may request a regular timeout if there is a suspension of play to administer Comments on the Rules-N-Guidelines for Infection Control.
a. Each team is entitled to six (6) charged timeouts during regulation play. Each team is limited to no more than three (3) timeouts in the fourth period and no more than two (2) timeouts in the last two minutes of regulation play. (This is in addition to one 20-second timeout per half.)
b. During a regular timeout, both teams may have unlimited substitutions.
c. In overtime periods each team shall be allowed three (3) 60-second timeouts regardless of the number of timeouts called or remaining during regulation play or previous overtimes. Teams are permitted no more than two timeouts in the last two minutes of the period.
d. There must be two 100-second timeouts in the first and third periods and three 100-second timeouts in the second and fourth periods. If neither team has taken a timeout prior to 5:59 of the first or third period, it shall be mandatory for the Official Scorer to take it at the first dead ball and charge it to the home team. If no subsequent timeouts are taken prior to 2:59, it shall be mandatory for the Official Scorer to take it and charge it to the team not previously charged. If neither team has taken a timeout prior to 8:59 of the second or fourth period, a mandatory timeout will be called by the Official Scorer and charged to neither team. If there are no subsequent timeouts taken prior to 5:59, it shall be mandatory for the Official Scorer to take it at the first dead ball and charge it to the home team. If no subsequent timeouts are taken prior to 2:59, it shall be mandatory for the Official Scorer to take it and charge it to the team not previously charged. The Official Scorer shall notify a team when it has been charged with a mandatory timeout. Any additional timeouts in a period beyond those which are mandatory shall be 60 seconds. No regular or mandatory timeout shall be granted to the defensive team during an official's suspension-of-play for (1) a delay-of-game warning, (2) retrieving an errant ball, (3) an inadvertent whistle, or (4) any other unusual circumstance.
EXCEPTION: Suspension-of-play for Infection Control. See Comments on the Rules-N.
e. If a regular or mandatory timeout is awarded the offensive team during the last two minutes of the fourth period and/or any overtime period and (1) the ball is out-of-bounds in the backcourt (except for a suspension of play), or (2) after securing the ball from a rebound and prior to any advance of the ball, or (3) after securing the ball from a change of possession and prior to any advance of the ball, the timeout shall be granted. Upon resumption of play, the team granted the timeout shall have the option of putting the ball into play at the 28' hash mark in the frontcourt, or at the designated spot out-of-bounds. If the ball is put into play at the hash mark, the ball may be passed into either the frontcourt or backcourt. If the ball is passed into the backcourt, the team will receive a new 8-second count. However, once the ball is (1) thrown in from out-of-bounds, or (2) dribbled or passed after receiving it from a rebound or a change of possession, the timeout shall be granted, and, upon resumption of play, the ball shall be in-bounded on the side- line where play was interrupted. The time on the game clock and the 24-second clock shall remain as when the timeout was called. In order for the option to be available under the conditions in paragraph #2 above, the offensive team must call two successive timeouts.
f. No timeout shall be charged if it is called to question a rule interpretation and the correction is sustained.
g. Requests for a timeout in excess of the authorized number shall be granted and a technical foul shall be assessed. Following the timeout, the ball will be awarded to the opposing team and play shall resume with a throw-in nearest the spot where play was interrupted.
Section VIII-Timeout Requests
a. If an official, upon receiving a timeout request (regular or 20-second) by the defensive team, inadvertently signals while the play is in progress, play shall be suspended and the team in possession shall put the ball in play immediately at the sideline nearest where the ball was when the signal was given. The team in possession shall have only the time remaining of the original eight seconds in which to move the ball into the frontcourt. The 24-second clock shall remain the same.
b. If an official, upon receiving a timeout request (regular or 20-second) from the defensive team, inadvertently signals for a timeout during: (1) a successful field goal or free throw attempt, the point(s) shall be scored; (2) an unsuccessful field goal attempt, play shall be resumed with a jump ball at the center circle between any two opponents; (3) an unsuccessful free throw attempt, the official shall rule disconcerting and award a substitute free throw.
c. If an official inadvertently blows his whistle during (1) a successful field goal or free throw attempt, the points shall be scored, or (2) an unsuccessful field goal or free throw attempt, play shall be resumed with a jump ball at the center circle between any two opponents.
d. When a team is granted a regular or 20-second time-out, play shall not resume until the full 100 seconds, 60 seconds, or 20 seconds have elapsed. The throw-in shall be nearest the spot where play was suspended. The throw-in shall be on the sideline, if the ball was in play when the request was granted.
e. A player shall not be granted a timeout (regular or 20-second) if both of his feet are in the air and any part of his body has broken the vertical plane of the boundary line (including the midcourt line).
Section IX-Time-In
a. After time has been out, the game clock shall be started when the ball is legally touched by any player within the playing area of the court.
b. On a free throw that is unsuccessful and the ball continues in play, the game clock shall be started when the missed free throw is legally touched by any player.
c. If play is resumed by a throw-in from out-of-bounds, the game clock shall be started when the ball is legally touched by any player within the playing area of the court.
d. If play is resumed with a jump ball, the game clock shall be started when the ball is legally tapped.