What or other reasons for a jump ball in the nba other than start of a game?

Answer 1

According to NBA Rule 6, Sections III and IV: "Section III-Jump Balls in Center Circle a. The ball shall be put into play in the center circle by a jump ball between two opponents: (1) At the start of the game (2) At the start of each overtime period (3) For a double free throw violation (4) For a double foul during a loose ball situation (5) When the ball becomes dead when neither team is in control and no field goal or infraction is involved (6) When the ball comes to rest on the basket flange or becomes lodged between the basket ring and the backboard (7) When a double foul occurs as a result of a difference in opinion between officials (8) When an inadvertent whistle occurs during a loose ball (9) When a fighting foul occurs during a loose ball situation b. In all cases above, the jump ball shall be between any two opponents in the game at that time. If injury, ejection or disqualification makes it necessary for any player to be replaced, his substitute may not participate in the jump ball.

Section IV-Other jump Balls a. The ball shall be put into play by a jump ball at the circle which is closest to the spot where: (1) A held ball occurs (2) A ball out-of-bounds is caused by both teams (3) An official is in doubt as to who last touched the ball b. The jump ball shall be between the two involved players unless injury or ejection precludes one of the jumpers from participation. If the injured or ejected player must leave the game, the coach of the opposing team shall select from his opponent's bench a player who will replace the injured or ejected player. The injured player will not be permitted to re-enter the game."