Oob ?

[Redneck Ref]

Originally Posted by Adam

If the player causes the HB before stepping out of bounds (and I would consult the definition of a held ball), then it's a HB.
If he steps OOB in the process of trying to get a secure hold on the ball (ie, while touching but not having a secure hold on the ball), he has caused the ball to go OOB.

This is exactly what I was thinking.

But,

What if B1 is already OOB, standing on the end line, and he grabs at the ball A1 is holding, resulting in a held ball?

I think it could be a held ball for the same reason you could have a held ball during a throw-in. One player is OOB, the other is on the court.