Shaquille O'Neal responded to Jose Canseco's challenge to fight in a mixed martial arts bout by saying he's ready to rumble.
"I challenged him a long time ago," said O'Neal, who retired from the Celtics last year. "If he wants it done he knows where to find me."
Canseco, 47, had attempted to start a comeback to baseball, but he was banned from his Mexican League team after declining to take a doping test.
Said the 40-year-old O'Neal: "He can be high off whatever, and I'll be high off Frosted Flakes."