Theisey Nope. Should there be? Can't say as I've been at a game where it was done, but I have heard of it. I see nothing wrong.
BktBallRef monsignor wroteDo we have a rule in NF, that the center cannot call the cadence? There's no requirement that there even be a cadence, much less who can do it. I have seen the snapper call cadence on punts.
brettdj I once played on a team where the QB had laryngitis and could not talk. Subs were bringing throat spray on and off the field. The center did the cadence the whole game.