WBO welterweight champion boxer Manny Pacquiao, of the Philippines, left, faces his challenger Juan Manuel Marquez, of Mexico, as they pose for photos during a news conference in Mexico City, Friday, ... more 

WBO welterweight champion boxer Manny Pacquiao, of the Philippines, left, faces his challenger Juan Manuel Marquez, of Mexico, as they pose for photos during a news conference 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