Zanzibar, back to your original play. From what I have been taught, if B1 jumps in a manner that is not vertical and A1 now jumps forward into him to draw the contact it is a defensive foul for B1 being illegal and A1 being smart. Now if A1 jumps way to the side in a very unnatural manner I would have an offensive foul or no call. When defenders are contesting perimeter jump shots 99% of the time they jump forward towards the ball, i.e. not vertical, and therefore, are illegal. This is what I have seen by watching tape. Now when big men are protecting the basket on a drive then there is a good chance they could be jumping vertically and therefore be legal.
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eli roe
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