挡拆掩护犯规（Screens & Picks）

违规掩护（Illegal Screens）

挡拆掩护战术（Pick'n Rolls）

掩护犯规之一：挡拆战术中，掩护者阻挡防守球员前进路线，未给其留足停顿和变向机会，属进攻犯规

Illegal Screen, Pick'n Roll, Screener rolls into defender

Commentary:

This is an example of an offensive foul for an illegal screen set in a pick'n roll situation. An offensive player may not get into the path of a moving defender without giving him the opportunity to stop and/or change direction. The distance needed to be given will depend on the speed of the opponent. On this play, the screener impedes the trailing defender by rolling right into the path of that defender without giving him the opportunity to stop or change direction.

掩护犯规之二：挡拆战术中，掩护者侵入防守球员路线，未给其留足停顿和变向机会，属进攻犯规

Illegal Screen, Pick'n Roll, Screener arrives late, moves into defender

Commentary:

This is an example of an offensive foul for an illegal screen set in a pick'n roll situation. An offensive player may not get into the path of a moving defender without giving him the opportunity to stop and/or change direction. The distance needed to be given will depend on the speed of the opponent. On this play, the offensive player setting the screen steps into the path of the moving defender without giving that defender the opportunity to stop and/or change direction

掩护犯规之三：挡拆战术中，掩护者伸腿绊倒防守球员(根据规则，攻方掩护者双脚只能保持在自己身体垂直区域内），属进攻犯规

Illegal Screen, Pick'n Roll, Screener extends leg outside the plane of his body

Commentary:

This is an example of an offensive foul for an illegal screen set in a pick'n roll situation. An offensive screener may not extend his legs outside the vertical plane of his body when setting a screen. On this play, offensive player extends his leg and trips the moving defender.