WBO welterweight champion boxer Manny Pacquiao, of the Philippines, attends a presentation with his challenger, Mexico's Juan Manuel Marquez, not in picture, in Mexico City, Friday, Sept. 21, 2012. ... more 

WBO welterweight champion boxer Manny Pacquiao, of the Philippines, attends a presentation with his challenger, Mexico's Juan Manuel Marquez, not in picture, in Mexico City, Friday, Sept. 21, 2012. The boxers are promoting their fourth fight, scheduled for Dec. 8, 2012 in Las Vegas. (AP Photo/Christian Palma) less