Pacquiao, Marquez look for KOs in 4th rivalry bout

BEVERLY HILLS, California (AP) - Three compelling bouts in eight years haven't resolved the rivalry between Pacquiao and Marquez, so they're stepping in the ring together for a fourth bout on Dec 8 at the MGM Grand Garden in Las Vegas.

And this time, they're both looking for the only decisive ending to any fight: a stone-cold KO.

"I want to erase the doubt of the last three fights," Pacquiao said. "There's so many people still asking if I won the fights. I think to myself, 'Something is wrong. I have to do it again.' This time, I will train hard to put this fight up in the history of boxing. I want to make this fight short. I want to knock him out."

Although they're extending a rivalry to rare lengths in modern boxing, the fighters and promoters believe fans will warm to the matchup when they remember just how good the first three fights were.