Sideline position?

[just another ref]

Originally Posted by DLH17

I think it's important to remember that there are situations when players may legally leave the floor without violating. One example would be a player sprinting towards the end line to retrieve a ball headed out of bounds - throwing it back in bounds, then letting his momentum carry him OOB. He's fine if he immediately reenters. No violation.

Perhaps the player in the OP situation is OOB for a non violating reason.

If so, and there's contact, it's "on him" and not the offensive player regardless of his right to a spot on the court.

So B1 and A1 are chasing a loose ball, B1 leaps and taps the ball before it can go out of bounds, then comes down straddling the sideline. A1 continues his pursuit, but knocks B1 to the floor.

You call this a blocking foul on B1?