[OKREF]

Originally Posted by Rob1968

BNR's scenario includes the ball having been thrown "directly onto the court" (it mentions that the ball was deflected by B), thus, no violation.
It seems to me, that there are two choices . . . POI may be considered the throw-in by A, and thus we re-do the throw-in,
or, we treat the scenario as the throw-in having been completed, (when the ball was touched by B) but with no team control having been established on the court, we may go to an AP throw-in.
Presently, I favor the latter. But I'm willing to consider other opinions.

If it hits the bottom of the backboard and we have an IW, it goes back to the AP throw in. The throw in has not been completed, and this isn't a violation. The arrow will change when the throw in has ended.