MANILA, Philippines – Eight-division world champion Manny "Pacman" Pacquiao aims to show off his vintage form when he takes on his greatest rival, Juan Manuel Marquez of Mexico, in their fourth fight on December 8 in Las Vegas.
Pacquiao is currently training at the Wild Card Gym in Los Angeles under the supervision of chief trainer Freddie Roach.
In an interview with Yahoo! Sports, Pacquiao stressed that his goal in the fourth fight against Marquez is to once again flash the aggressive form that made him the top pound-for-pound fighter in the world.
"I need to be more aggressive. That's what I'm focusing on now, more motivation (to get a knockout) and more aggressiveness," Pacquiao told Kevin Iole.
"That's the most important thing I had before, when I was 25 or 26 years old. I went after my opponents very aggressively, and I'm trying to get that back now," he added.
Pacquiao and Roach both believe that they need to knockout Marquez to secure a victory in the fourth fight, after getting a favorable decision in the 2008 rematch and 2011 trilogy bout.
"I flat-out 100% told him, 'Look, Manny, you’re not going to win a decision,'" Roach explained. "He told me he knows he needs a knockout win, and I told him I agreed."
"I must have repeated that point 10 times. Judges are humans and they're aware of how the other fights went and all that has gone on," Roach added.
Pacquiao defeated Marquez via majority decision when they fought last November 2011, but it was a controversial victory with most pundits believing the Mexican was the rightful winner.
The Filipino champion has repeatedly stressed that he wants to end all doubts and answer all questions in the fourth fight.
"What I'm trying to do in this fight is end any doubts. I worked on the conditioning so hard so I could do whatever I need to do in my fight," Pacquiao said.
"My opponent is claiming he won the fight the last time, so I want to give a knockout so the people know for sure who won this one," he added.
Pacquiao has not won by knockout since stopping Miguel Cotto in the 12th round of their 2009 encounter.