※ 引述《aroyneil8256 (方向 )》之銘言：
: 在任一方發邊線、發底線球，
: 裁判應「主動」要求防守者，
: 退離執行發球者「2步以上」；
: 假如裁判沒有提出要求，
: 執行發球的球員可以要求裁判協助驅離防守者保持距離。
不懂規則在那邊亂唬爛
先別說這是NBA，連FIBA都沒有2步以上這種規則，
https://www.fiba.com/downloads/Rules/2014/Official_Basketball_Rules_2014_Y.pdf
17.3.2
During the throw-in other player(s) shall not:
。 Have any part of their bodies over the boundary line
before the ball has been thrown-in across the boundary line.
。 Be closer than 1 m to the player taking the throw-in when the throw-in
place has less than 2 m distance between the boundary line and
any out-of-bounds obstructions.
也就是身體不要越線，
如果發球位置距離邊線只有不到2公尺的距離，其他人要跟發球者保持超過1公尺的距離
換句話說，如果發球位置距離邊線有超過2公尺的空間，其他人就是保持不要越線就好
沒有什麼2步這種規則，又不是系隊
再來是NBA的規定
http://www.nba.com/media/dleague/1314-nba-rule-book.pdf
Rule 8. Section III
Until the passed ball has crossed the plane of the boundary,
no player shall have any part of his person over the boundary line
and teammates shall not occupy positions parallel or adjacent
to the baseline if an opponent desires one of those positions.
也只是提到不要越線
Rule 10. Section III
A thrower-in shall not
(1) carry the ball onto the court;
(2) fail to release the ball within 5 seconds;
(3) touch it on the court before it has touched another player;
(4) leave the desig- nated throw-in spot;
(5) throw the ball so that it enters the basket
before touching anyone on the court;
(6) step on the court over the boundary line before the ball is released;
(7) cause the ball to go out-of-bounds without being touched
by a player in the game;
(8) leave the playing surface to gain an advantage on a throw-in;
(9) hand the ball to a player on the court.
一樣就是不要越線，
簡單說，發球完成前：
雙方不要踩線跟越線；
發球者不要接觸到場內跟其他場內球員；
其他球員不要接觸到發球員。
馬妞踩線 ＝》違例
發球幹馬妞拐 ＝》違例
裁判沒看到 ＝》 正常的，沒事，沒事。