screening a player from the ball?

[Troward]

thanks for correcting my schitzophrenic B1. I will try to edit this so it reads all the same defender B1.

Lotto are you saying you would call a foul on the defense for illegally moving to gain an advantage?
I don't think you can call an illegal screen on the defense?

in this scenario it is not the contact that provides an advantage to the defense because A1 avoids signicant contact and is able to continue moving towards the ball.It is the defender moving with A1 and preventing A1 from getting to the ball that is giving the defense the advantage. But I feel this is good defense. Are you saying you would call a foul on the defense for illegally moving and gaining an advantage?