Why do you do this? Does your family have particular difficulty recognizing your face? In these shots there are typically about six to twelve people visible behind the batter. Your family can't tell which one is you?
A simple smile isn't enough? Do you want to look like a fool on national TV? I really don't get it. What purpose does the waving serve other than to identify you as an idiot?
One final question: do you even like baseball?