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下面的所有规则均来自NBA官方规则：official.nba.com

感觉争议还是挺多的，可以理解很多球迷依旧认为这是一个犯规，即便是巴克利和奥尼尔在TNT上也说认为这是犯规。

但裁判被挑战之后选择了no call，还是基于规则书上的“球手一体”解释：

Rule No.12: Fouls and Penalties, B Personal Fouls, Section I, Types:

e. Contact which occurs on the hand of the offensive player, while that part of the hand is in contact with the ball, is legal.

当进攻队员的手的某一部分接触在球上时，发生在进攻队员手部的那部分的接触是合法的。

（链接：https://official.nba.com/rule-no-12-fouls-and-penalties/#foultypes）

与我们习惯的理解不同，这里是不区分是否为投篮动作的，只要接触到对方的手的部分也在接触球，这就是一个合法的接触。

同时在NBA官方对规则的解释中，也有对球手一体的解释：

The mere fact that contact occurs does not necessarily constitute a foul. Contact which is incidental to an effort by a player to play an opponent, reach a loose ball, or perform normal defensive or offensive movements, should not be considered illegal. If, however, a player attempts to play an opponent from a position where he has no reasonable chance to perform without making contact with his opponent, the responsibility is on the player in this position.

仅仅发生接触并不一定构成犯规。球员在与对手对抗、接球或进行正常的防守或进攻动作时偶然发生的接触不应被视为非法。然而，如果一名球员试图从一个他没有合理机会在不与对手接触的情况下比赛的位置与对手比赛，则责任由处于该位置的球员承担。

The hand is considered “part of the ball” when it is in contact with the ball. Therefore, contact on that part of the hand by a defender while it is in contact with the ball is not illegal.

当手与球接触时，手被视为“球的一部分”。因此，防守队员在与球接触时接触该部分手并不违法。

https://official.nba.com/comments-on-the-rules/

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关于手部接触的在其它时候也常常不被视作犯规：

Incidental contact with the hand against an offensive player shall be ignored if it does not affect the player’s speed, quickness, balance and/or rhythm.

如果不影响进攻球员的速度、敏捷、平衡和/或节奏，则手部的意外接触应被忽略。

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此外，球手一体的原则也会被应用在出界球的判断上

https://videorulebook.nba.com/archive/out-of-bounds-violation-hand-as-part-of-the-ball-on-an-out-of-bounds-play/