Miami Heat guard and former Marquette University basketball standout Dwyane Wade knows what it's like to have a target on his back. And with the 2012-13 NBA season around the corner — a season in which Wade and his Heat teammates will attempt to defend their 2012 NBA championship — could that target possibly get any larger this season?

"Man, if our target gets any bigger, I don't know," Wade joked at Marquette's Al McGuire Center before a signing for his new book, A Father First: How My Life Became Bigger Than Basketball. "Our target is pretty big. I would say it's going to be tough to repeat. It's tough to win the first championship. It's going to be tough to win another one."