Int. grounding from shotgun snap

[buckrog64]

I would think that an IG flag would only come from the WH. Zebras downfield aren't in the best position to determine if the QB was under duress. I suppose the WH can flag and then confer with his crew to make sure the flag was legit if he calls grounding. Otherwise, the WH is watching the QB to see what he does, and the WH has to peek downfield looking for a receiver where the ball was thrown, and at the same time make sure no one roughs the QB. A lot to keep track of!