Pacquiao must seek quick knockout: Hagler

Former middleweight great weighs in on clash between Pacman and Money

Manny Pacquiao needs to knock out unbeaten Floyd 'Money' Mayweather Jr. in the first six rounds of their May 2 super fight or the Filipino star will lose on points, Marvelous Marvin Hagler predicted in Shanghai on Wednesday.

"Anywhere from one to six, I would go Pacquiao, and then after that I believe that it's got to be Floyd Mayweather because of his boxing techniques," said the former undisputed middleweight champion of the world.