Shaquille O'Neal's offseason included some yoga, hunting and even ultimate fighting. Yes, there are apparently people out there willing to don headgear and fight a 7-foot-1, 330-pound powerhouse.

There were moments Monday, on the eve of Miami Heat training camp, that O'Neal seemed like his usual playful and cheery self. He referred to himself as CEO of the Heat, demoting coach Pat Riley to vice president, and interrupted Antoine Walker's live radio interview with a bear hug.

The Heat center, the names of his six children tattooed on his wrists, filed for divorce Sept. 4, although he actually signed the papers weeks earlier. His mood instantly turned sullen when discussing the situation.

"It's something that I won't discuss now with you guys. Won't discuss 10 years from now. Won't ever discuss it," O'Neal said. "If I ever do have a bad game or bad couple games, I won't blame it on that. ... It's something that I obviously have to deal with and I'm going to deal with it the best way possible."