[just another ref]

Originally Posted by APG

After he's airborne? If he's not already in the path before the opponent is airborne, this is a blocking foul (I wouldn't consider a shoulder as being in the path)...unless something is getting lost in translation here.

He already was in the path. I'm not talking about an extended shoulder. I'm just saying he doesn't have to be perfectly centered to have legal position.

Try this: Contact would have been on his left pectoral muscle had he remained stationary. But he moves laterally so now the contact is on the right pectoral muscle instead. This movement does not make it a block.