[M&M Guy]

Now, poor alfreedog has been trying to get you guys' attention about the original question - from what position, L, C or T, do make this call? And I will be the one to finally address it.

Here it is: it depends.

Sorry, couldn't resist. But it is like any other foul call - whose primary is it? Was it a drive that originated from someone's primary? Who was in the best position to see the contact (or lack of contact)? If it was in transition, was the new L in position to see the area between the players, whether ahead of the play or coming in from behind, or could the C have a better look? So, I'm not sure there's a set answer, other than it depends on the actual play. Sorry I've been so helpful.