I read an article from a sports psychologist once who said that because most teams defer, if you win the toss you should ask for the ball. With the intent being that you can tell your team "We want the ball first. That's what we want. If we get the ball first that means we won the coin toss." So you're building confidence from the start, because chances are pretty good that if you want the ball first you're going to get the ball first.