Well, that's when umpires should be on the same page. I hate it when someone calls out "I've got third" when they want to deviate from mechanics in the middle of a game. First, I think that it's bad form to take away someone's call. Second, a defensive player may think it's a teammate yelling it out and not the umpire.

If that's how you want to do your game, fine. Just work it out BEFORE the game, save yourself the breath, save yourself the risk of confusing the defense, and save yourself the chat with the DC explaining why you'd yell something like that out while his team is trying to get an out.

Only for a one winged chicken.